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Message-ID: <IA1PR20MB4953C3278ABEA3B840C11712BB85A@IA1PR20MB4953.namprd20.prod.outlook.com>
Date: Tue, 5 Dec 2023 09:13:35 +0800
From: Inochi Amaoto <inochiama@...look.com>
To: Chen Wang <unicornxw@...il.com>
Cc: Inochi Amaoto <inochiama@...look.com>, aou@...s.berkeley.edu,
chao.wei@...hgo.com, conor@...nel.org,
krzysztof.kozlowski+dt@...aro.org, mturquette@...libre.com,
palmer@...belt.com, paul.walmsley@...ive.com,
richardcochran@...il.com, robh+dt@...nel.org, sboyd@...nel.org,
devicetree@...r.kernel.org, linux-clk@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
haijiao.liu@...hgo.com, xiaoguang.xing@...hgo.com,
guoren@...nel.org, jszhang@...nel.org, samuel.holland@...ive.com,
Chen Wang <unicorn_wang@...look.com>
Subject: Re: [PATCH v4 3/4] clk: sophgo: Add SG2042 clock generator driver
>From: Chen Wang <unicorn_wang@...look.com>
>
>Add a driver for the SOPHGO SG2042 clock generator.
>
>Signed-off-by: Chen Wang <unicorn_wang@...look.com>
>---
> MAINTAINERS | 7 +
> drivers/clk/Kconfig | 1 +
> drivers/clk/Makefile | 1 +
> drivers/clk/sophgo/Kconfig | 8 +
> drivers/clk/sophgo/Makefile | 2 +
> drivers/clk/sophgo/clk-sophgo-sg2042.c | 1371 ++++++++++++++++++++++++
> drivers/clk/sophgo/clk-sophgo-sg2042.h | 226 ++++
> 7 files changed, 1616 insertions(+)
> create mode 100644 drivers/clk/sophgo/Kconfig
> create mode 100644 drivers/clk/sophgo/Makefile
> create mode 100644 drivers/clk/sophgo/clk-sophgo-sg2042.c
> create mode 100644 drivers/clk/sophgo/clk-sophgo-sg2042.h
>
>diff --git a/MAINTAINERS b/MAINTAINERS
>index 97f51d5ec1cf..c9c75468f2cb 100644
>--- a/MAINTAINERS
>+++ b/MAINTAINERS
>@@ -20269,6 +20269,13 @@ S: Maintained
> F: arch/riscv/boot/dts/sophgo/
> F: Documentation/devicetree/bindings/riscv/sophgo.yaml
>
>+SOPHGO CLOCK DRIVER
>+M: Chen Wang <unicorn_wang@...look.com>
>+S: Maintained
>+F: Documentation/devicetree/bindings/clock/sophgo/
>+F: drivers/clk/sophgo/
>+F: include/dt-bindings/clock/sophgo,sg2042-clkgen.h
>+
> SOUND
> M: Jaroslav Kysela <perex@...ex.cz>
> M: Takashi Iwai <tiwai@...e.com>
>diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
>index c30d0d396f7a..514343934fda 100644
>--- a/drivers/clk/Kconfig
>+++ b/drivers/clk/Kconfig
>@@ -499,6 +499,7 @@ source "drivers/clk/rockchip/Kconfig"
> source "drivers/clk/samsung/Kconfig"
> source "drivers/clk/sifive/Kconfig"
> source "drivers/clk/socfpga/Kconfig"
>+source "drivers/clk/sophgo/Kconfig"
> source "drivers/clk/sprd/Kconfig"
> source "drivers/clk/starfive/Kconfig"
> source "drivers/clk/sunxi/Kconfig"
>diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
>index ed71f2e0ee36..aa5d2cf0b6a6 100644
>--- a/drivers/clk/Makefile
>+++ b/drivers/clk/Makefile
>@@ -119,6 +119,7 @@ obj-$(CONFIG_ARCH_ROCKCHIP) += rockchip/
> obj-$(CONFIG_COMMON_CLK_SAMSUNG) += samsung/
> obj-$(CONFIG_CLK_SIFIVE) += sifive/
> obj-y += socfpga/
>+obj-$(CONFIG_ARCH_SOPHGO) += sophgo/
> obj-$(CONFIG_PLAT_SPEAR) += spear/
> obj-y += sprd/
> obj-$(CONFIG_ARCH_STI) += st/
>diff --git a/drivers/clk/sophgo/Kconfig b/drivers/clk/sophgo/Kconfig
>new file mode 100644
>index 000000000000..b0fbe4499870
>--- /dev/null
>+++ b/drivers/clk/sophgo/Kconfig
>@@ -0,0 +1,8 @@
>+# SPDX-License-Identifier: GPL-2.0
>+
>+config CLK_SOPHGO_SG2042
>+ bool "Sophgo SG2042 clock support"
>+ depends on ARCH_SOPHGO || COMPILE_TEST
>+ default ARCH_SOPHGO
>+ help
>+ Say yes here to support the clock controller on the Sophgo SG2042 SoC.
Please add RISCV to its depends. Not all the sophgo SoCs are in the RISC-V
platform, Some are arm chips. It is not good to build this driver
in that arch.
Also, the condition ARCH_SOPHGO is duplicate in the Makefile. Please
remove one of them.
>diff --git a/drivers/clk/sophgo/Makefile b/drivers/clk/sophgo/Makefile
>new file mode 100644
>index 000000000000..13834cce260c
>--- /dev/null
>+++ b/drivers/clk/sophgo/Makefile
>@@ -0,0 +1,2 @@
>+# SPDX-License-Identifier: GPL-2.0
>+obj-$(CONFIG_CLK_SOPHGO_SG2042) += clk-sophgo-sg2042.o
>diff --git a/drivers/clk/sophgo/clk-sophgo-sg2042.c b/drivers/clk/sophgo/clk-sophgo-sg2042.c
>new file mode 100644
>index 000000000000..421ebcc7192b
>--- /dev/null
>+++ b/drivers/clk/sophgo/clk-sophgo-sg2042.c
>@@ -0,0 +1,1371 @@
>+// SPDX-License-Identifier: GPL-2.0
>+/*
>+ * Sophgo SG2042 Clock Generator Driver
>+ *
>+ * Copyright (C) 2023 Sophgo Technology Inc. All rights reserved.
>+ */
>+
>+#include <linux/platform_device.h>
>+#include <linux/mfd/syscon.h>
>+#include <linux/of_address.h>
>+
>+#include <dt-bindings/clock/sophgo,sg2042-clkgen.h>
>+
>+#include "clk-sophgo-sg2042.h"
>+
>+#define div_mask(width) ((1 << (width)) - 1)
>+#define ENCODE_PLL_CTRL(fbdiv, p1, p2, refdiv) \
>+ (((fbdiv & 0xfff) << 16) | ((p2 & 0x7) << 12) | ((p1 & 0x7) << 8) | (refdiv & 0x3f))
>+
>+static inline int __sg2042_pll_enable(struct sg2042_pll_clock *pll, bool en)
>+{
>+ unsigned int value = 0;
>+ unsigned long enter;
>+ struct regmap *map = pll->map;
>+
>+ if (en) {
>+ /* wait pll lock */
>+ enter = jiffies;
>+ regmap_read(map, pll->offset_status, &value);
>+ while (!((value >> pll->shift_status_lock) & 0x1)) {
>+ regmap_read(map, pll->shift_status_lock, &value);
>+ if (time_after(jiffies, enter + HZ / 10))
>+ pr_warn("%s not locked\n", pll->name);
>+ }
>+ /* wait pll updating */
>+ enter = jiffies;
>+ regmap_read(map, pll->shift_status_updating, &value);
>+ while (((value >> pll->shift_status_updating) & 0x1)) {
>+ regmap_read(map, pll->shift_status_updating, &value);
>+ if (time_after(jiffies, enter + HZ / 10))
>+ pr_warn("%s still updating\n", pll->name);
>+ }
>+ /* enable pll */
>+ regmap_read(map, pll->offset_enable, &value);
>+ regmap_write(map, pll->offset_enable, value | (1 << pll->shift_enable));
>+ } else {
>+ /* disable pll */
>+ regmap_read(map, pll->offset_enable, &value);
>+ regmap_write(map, pll->offset_enable, value & (~(1 << pll->shift_enable)));
>+ }
>+
>+ return 0;
>+}
>+
>+static unsigned int __sg2042_get_table_div(
>+ const struct clk_div_table *table,
>+ unsigned int val)
>+{
>+ const struct clk_div_table *clkt;
>+
>+ for (clkt = table; clkt->div; clkt++)
>+ if (clkt->val == val)
>+ return clkt->div;
>+ return 0;
>+}
>+
>+static unsigned int __sg2042_get_div(
>+ const struct clk_div_table *table,
>+ unsigned int val,
>+ unsigned long flags, u8 width)
>+{
>+ if (flags & CLK_DIVIDER_ONE_BASED)
>+ return val;
>+ if (flags & CLK_DIVIDER_POWER_OF_TWO)
>+ return 1 << val;
>+ if (flags & CLK_DIVIDER_MAX_AT_ZERO)
>+ return val ? val : div_mask(width) + 1;
>+ if (table)
>+ return __sg2042_get_table_div(table, val);
>+ return val + 1;
>+}
>+
>+/*
>+ * @reg_value: current register value
>+ * @parent_rate: parent frequency
>+ *
>+ * This function is used to calculate below "rate" in equation
>+ * rate = (parent_rate/REFDIV) x FBDIV/POSTDIV1/POSTDIV2
>+ * = (parent_rate x FBDIV) / (REFDIV x POSTDIV1 x POSTDIV2)
>+ */
>+static unsigned long __sg2042_pll_recalc_rate(
>+ unsigned int reg_value,
>+ unsigned long parent_rate)
>+{
>+ unsigned int fbdiv, refdiv;
>+ unsigned int postdiv1, postdiv2;
>+ u64 rate, numerator, denominator;
>+
>+ fbdiv = (reg_value >> 16) & 0xfff;
>+ refdiv = reg_value & 0x3f;
>+ postdiv1 = (reg_value >> 8) & 0x7;
>+ postdiv2 = (reg_value >> 12) & 0x7;
>+
>+ numerator = parent_rate * fbdiv;
>+ denominator = refdiv * postdiv1 * postdiv2;
>+ do_div(numerator, denominator);
>+ rate = numerator;
>+
>+ return rate;
>+}
>+
>+/*
>+ * Below array is the total combination lists of POSTDIV1 and POSTDIV2
>+ * for example:
>+ * postdiv1_2[0] = {2, 4, 8}
>+ * ==> div1 = 2, div2 = 4 , div1 * div2 = 8
>+ * And POSTDIV_RESULT_INDEX point to 3rd element in the array
>+ */
>+#define POSTDIV_RESULT_INDEX 2
>+static int postdiv1_2[][3] = {
>+ {2, 4, 8}, {3, 3, 9}, {2, 5, 10}, {2, 6, 12},
>+ {2, 7, 14}, {3, 5, 15}, {4, 4, 16}, {3, 6, 18},
>+ {4, 5, 20}, {3, 7, 21}, {4, 6, 24}, {5, 5, 25},
>+ {4, 7, 28}, {5, 6, 30}, {5, 7, 35}, {6, 6, 36},
>+ {6, 7, 42}, {7, 7, 49}
>+};
>+
>+/*
>+ * Based on input rate/prate/fbdiv/refdiv, look up the postdiv1_2 table
>+ * to get the closest postdiiv combination.
>+ * @rate: FOUTPOSTDIV
>+ * @prate: parent rate, i.e. FREF
>+ * @fbdiv: FBDIV
>+ * @refdiv: REFDIV
>+ * @postdiv1: POSTDIV1, output
>+ * @postdiv2: POSTDIV2, output
>+ * See TRM:
>+ * FOUTPOSTDIV = FREF * FBDIV / REFDIV / (POSTDIV1 * POSTDIV2)
>+ * So we get following formula to get POSTDIV1 and POSTDIV2:
>+ * POSTDIV = (prate/REFDIV) x FBDIV/rate
>+ * above POSTDIV = POSTDIV1*POSTDIV2
>+ */
>+static int __sg2042_pll_get_postdiv_1_2(
>+ unsigned long rate,
>+ unsigned long prate,
>+ unsigned int fbdiv,
>+ unsigned int refdiv,
>+ unsigned int *postdiv1,
>+ unsigned int *postdiv2)
>+{
>+ int index = 0;
>+ int ret = 0;
>+ u64 tmp0;
>+
>+ /* prate/REFDIV and result save to tmp0 */
>+ tmp0 = prate;
>+ do_div(tmp0, refdiv);
>+
>+ /* ((prate/REFDIV) x FBDIV) and result save to tmp0 */
>+ tmp0 *= fbdiv;
>+
>+ /* ((prate/REFDIV) x FBDIV)/rate and result save to tmp0 */
>+ do_div(tmp0, rate);
>+
>+ /* tmp0 is POSTDIV1*POSTDIV2, now we calculate div1 and div2 value */
>+ if (tmp0 <= 7) {
>+ /* (div1 * div2) <= 7, no need to use array search */
>+ *postdiv1 = tmp0;
>+ *postdiv2 = 1;
>+ } else {
>+ /* (div1 * div2) > 7, use array search */
>+ for (index = 0; index < ARRAY_SIZE(postdiv1_2); index++) {
>+ if (tmp0 > postdiv1_2[index][POSTDIV_RESULT_INDEX]) {
>+ continue;
>+ } else {
>+ /* found it */
>+ break;
>+ }
>+ }
>+ if (index < ARRAY_SIZE(postdiv1_2)) {
>+ *postdiv1 = postdiv1_2[index][1];
>+ *postdiv2 = postdiv1_2[index][0];
>+ } else {
>+ pr_debug("%s can not find in postdiv array!\n", __func__);
>+ ret = -EINVAL;
>+ }
>+ }
>+
>+ return ret;
>+}
>+
>+#define KHZ 1000UL
>+#define MHZ (KHZ * KHZ)
>+
>+#define REFDIV_MIN 1
>+#define REFDIV_MAX 63
>+#define FBDIV_MIN 16
>+#define FBDIV_MAX 320
>+
>+#define PLL_FREF_SG2042 (25 * MHZ)
>+
>+#define PLL_FOUTPOSTDIV_MIN (16 * MHZ)
>+#define PLL_FOUTPOSTDIV_MAX (3200 * MHZ)
>+
>+#define PLL_FOUTVCO_MIN (800 * MHZ)
>+#define PLL_FOUTVCO_MAX (3200 * MHZ)
>+
>+struct sg2042_pll_ctrl {
>+ unsigned long freq;
>+ unsigned int fbdiv;
>+ unsigned int postdiv1;
>+ unsigned int postdiv2;
>+ unsigned int refdiv;
>+};
>+
>+/*
>+ * Based on the given FOUTPISTDIV and the input FREF to calculate
>+ * the REFDIV/FBDIV/PSTDIV1/POSTDIV2 combination for pllctrl register.
>+ * @req_rate: expected output clock rate, i.e. FOUTPISTDIV
>+ * @parent_rate: input parent clock rate, i.e. FREF
>+ * @best: output to hold calculated combination of REFDIV/FBDIV/PSTDIV1/POSTDIV2
>+ */
>+static int __sg2042_get_pll_ctl_setting(
>+ struct sg2042_pll_ctrl *best,
>+ unsigned long req_rate,
>+ unsigned long parent_rate)
>+{
>+ int ret;
>+ unsigned int fbdiv, refdiv, postdiv1, postdiv2;
>+ unsigned long foutpostdiv;
>+ u64 tmp;
>+ u64 foutvco;
>+
>+ if (parent_rate != PLL_FREF_SG2042) {
>+ pr_alert("INVALID FREF: %ld\n", parent_rate);
>+ return -EINVAL;
>+ }
>+
>+ if (req_rate < PLL_FOUTPOSTDIV_MIN || req_rate > PLL_FOUTPOSTDIV_MAX) {
>+ pr_alert("INVALID FOUTPOSTDIV: %ld\n", req_rate);
>+ return -EINVAL;
>+ }
>+
>+ memset(best, 0, sizeof(struct sg2042_pll_ctrl));
>+
>+ for (refdiv = REFDIV_MIN; refdiv < REFDIV_MAX + 1; refdiv++) {
>+ /* required by hardware: FREF/REFDIV must > 10 */
>+ tmp = parent_rate;
>+ do_div(tmp, refdiv);
>+ if (tmp <= 10)
>+ continue;
>+
>+ for (fbdiv = FBDIV_MIN; fbdiv < FBDIV_MAX + 1; fbdiv++) {
>+ /*
>+ * FOUTVCO = FREF*FBDIV/REFDIV validation
>+ * required by hardware, FOUTVCO must [800MHz, 3200MHz]
>+ */
>+ foutvco = parent_rate * fbdiv;
>+ do_div(foutvco, refdiv);
>+ if (foutvco < PLL_FOUTVCO_MIN || foutvco > PLL_FOUTVCO_MAX)
>+ continue;
>+
>+ ret = __sg2042_pll_get_postdiv_1_2(
>+ req_rate, parent_rate, fbdiv, refdiv,
>+ &postdiv1, &postdiv2);
>+ if (ret)
>+ continue;
>+
>+ /*
>+ * FOUTPOSTDIV = FREF*FBDIV/REFDIV/(POSTDIV1*POSTDIV2)
>+ * = FOUTVCO/(POSTDIV1*POSTDIV2)
>+ */
>+ tmp = foutvco;
>+ do_div(tmp, (postdiv1 * postdiv2));
>+ foutpostdiv = (unsigned long)tmp;
>+ /* Iterative to approach the expected value */
>+ if (abs_diff(foutpostdiv, req_rate) <
>+ abs_diff(best->freq, req_rate)) {
>+ best->freq = foutpostdiv;
>+ best->refdiv = refdiv;
>+ best->fbdiv = fbdiv;
>+ best->postdiv1 = postdiv1;
>+ best->postdiv2 = postdiv2;
>+ if (foutpostdiv == req_rate)
>+ return 0;
>+ }
>+ continue;
>+ }
>+ }
>+
>+ if (best->freq == 0)
>+ return -EINVAL;
>+ else
>+ return 0;
>+}
>+
>+/*
>+ * @hw: ccf use to hook get sg2042_pll_clock
>+ * @parent_rate: parent rate
>+ *
>+ * The is function will be called through clk_get_rate
>+ * and return current rate after decoding reg value
>+ */
>+static unsigned long sg2042_clk_pll_recalc_rate(
>+ struct clk_hw *hw,
>+ unsigned long parent_rate)
>+{
>+ unsigned int value;
>+ unsigned long rate;
>+ struct sg2042_pll_clock *pll = to_sg2042_pll_clk(hw);
>+
>+ regmap_read(pll->map, pll->offset_ctrl, &value);
>+ rate = __sg2042_pll_recalc_rate(value, parent_rate);
>+
>+ pr_debug("--> %s: pll_recalc_rate: val = %ld\n",
>+ clk_hw_get_name(hw), rate);
>+ return rate;
>+}
>+
>+static long sg2042_clk_pll_round_rate(
>+ struct clk_hw *hw,
>+ unsigned long req_rate,
>+ unsigned long *prate)
>+{
>+ unsigned int value;
>+ struct sg2042_pll_ctrl pctrl_table;
>+ long proper_rate;
>+ int ret;
>+
>+ ret = __sg2042_get_pll_ctl_setting(&pctrl_table, req_rate, *prate);
>+ if (ret) {
>+ proper_rate = 0;
>+ goto out;
>+ }
>+
>+ value = ENCODE_PLL_CTRL(pctrl_table.fbdiv, pctrl_table.postdiv1,
>+ pctrl_table.postdiv2, pctrl_table.refdiv);
>+ proper_rate = (long)__sg2042_pll_recalc_rate(value, *prate);
>+
>+out:
>+ pr_debug("--> %s: pll_round_rate: val = %ld\n",
>+ clk_hw_get_name(hw), proper_rate);
>+ return proper_rate;
>+}
>+
>+static int sg2042_clk_pll_determine_rate(
>+ struct clk_hw *hw,
>+ struct clk_rate_request *req)
>+{
>+ req->rate = sg2042_clk_pll_round_rate(hw, min(req->rate, req->max_rate),
>+ &req->best_parent_rate);
>+ pr_debug("--> %s: pll_determine_rate: val = %ld\n",
>+ clk_hw_get_name(hw), req->rate);
>+ return 0;
>+}
>+
>+static int sg2042_clk_pll_set_rate(
>+ struct clk_hw *hw,
>+ unsigned long rate,
>+ unsigned long parent_rate)
>+{
>+ unsigned long flags;
>+ unsigned int value;
>+ int ret = 0;
>+ struct sg2042_pll_ctrl pctrl_table;
>+ struct sg2042_pll_clock *pll = to_sg2042_pll_clk(hw);
>+
>+ spin_lock_irqsave(pll->lock, flags);
>+ if (__sg2042_pll_enable(pll, 0)) {
>+ pr_warn("Can't disable pll(%s), status error\n", pll->name);
>+ goto out;
>+ }
>+ ret = __sg2042_get_pll_ctl_setting(&pctrl_table, rate, parent_rate);
>+ if (ret) {
>+ pr_warn("%s: Can't find a proper pll setting\n", pll->name);
>+ goto out2;
>+ }
>+
>+ value = ENCODE_PLL_CTRL(pctrl_table.fbdiv, pctrl_table.postdiv1,
>+ pctrl_table.postdiv2, pctrl_table.refdiv);
>+
>+ /* write the value to top register */
>+ regmap_write(pll->map, pll->offset_ctrl, value);
>+
>+out2:
>+ __sg2042_pll_enable(pll, 1);
>+out:
>+ spin_unlock_irqrestore(pll->lock, flags);
>+
>+ pr_debug("--> %s: pll_set_rate: val = 0x%x\n",
>+ clk_hw_get_name(hw), value);
>+ return ret;
>+}
>+
>+static unsigned long sg2042_clk_divider_recalc_rate(
>+ struct clk_hw *hw,
>+ unsigned long parent_rate)
>+{
>+ struct sg2042_divider_clock *divider = to_sg2042_clk_divider(hw);
>+ unsigned int val;
>+ unsigned long ret_rate;
>+
>+ val = readl(divider->reg) >> divider->shift;
>+ val &= div_mask(divider->width);
>+
>+ ret_rate = divider_recalc_rate(hw, parent_rate, val, divider->table,
>+ divider->div_flags, divider->width);
>+
>+ pr_debug("--> %s: divider_recalc_rate: val = %ld\n",
>+ clk_hw_get_name(hw), ret_rate);
>+ return ret_rate;
>+}
>+
>+static long sg2042_clk_divider_round_rate(
>+ struct clk_hw *hw,
>+ unsigned long rate,
>+ unsigned long *prate)
>+{
>+ int bestdiv;
>+ unsigned long ret_rate;
>+ struct sg2042_divider_clock *divider = to_sg2042_clk_divider(hw);
>+
>+ /* if read only, just return current value */
>+ if (divider->div_flags & CLK_DIVIDER_READ_ONLY) {
>+ bestdiv = readl(divider->reg) >> divider->shift;
>+ bestdiv &= div_mask(divider->width);
>+ bestdiv = __sg2042_get_div(divider->table, bestdiv, divider->div_flags,
>+ divider->width);
>+ ret_rate = DIV_ROUND_UP_ULL((u64)*prate, bestdiv);
>+ } else {
>+ ret_rate = divider_round_rate(hw, rate, prate, divider->table,
>+ divider->width, divider->div_flags);
>+ }
>+
>+ pr_debug("--> %s: divider_round_rate: val = %ld\n",
>+ clk_hw_get_name(hw), ret_rate);
>+ return ret_rate;
>+}
>+
>+static int sg2042_clk_divider_set_rate(
>+ struct clk_hw *hw,
>+ unsigned long rate,
>+ unsigned long parent_rate)
>+{
>+ unsigned int value;
>+ unsigned int val, val2;
>+ unsigned long flags = 0;
>+ struct sg2042_divider_clock *divider = to_sg2042_clk_divider(hw);
>+
>+ value = divider_get_val(rate, parent_rate, divider->table,
>+ divider->width, divider->div_flags);
>+
>+ if (divider->lock)
>+ spin_lock_irqsave(divider->lock, flags);
>+ else
>+ __acquire(divider->lock);
>+
>+ /* div assert */
>+ val = readl(divider->reg);
>+ val &= ~0x1;
>+ writel(val, divider->reg);
>+
>+ if (divider->div_flags & CLK_DIVIDER_HIWORD_MASK) {
>+ val = div_mask(divider->width) << (divider->shift + 16);
>+ } else {
>+ val = readl(divider->reg);
>+ val &= ~(div_mask(divider->width) << divider->shift);
>+ }
>+
>+ val |= value << divider->shift;
>+ writel(val, divider->reg);
>+ val2 = val;
>+
>+ if (!(divider->div_flags & CLK_DIVIDER_READ_ONLY))
>+ val |= 1 << 3;
>+
>+ /* de-assert */
>+ val |= 1;
>+ writel(val, divider->reg);
>+ if (divider->lock)
>+ spin_unlock_irqrestore(divider->lock, flags);
>+ else
>+ __release(divider->lock);
>+
>+ pr_debug("--> %s: divider_set_rate: register val = 0x%x\n",
>+ clk_hw_get_name(hw), val2);
>+ return 0;
>+}
>+
>+static const struct clk_ops sg2042_clk_divider_ops = {
>+ .recalc_rate = sg2042_clk_divider_recalc_rate,
>+ .round_rate = sg2042_clk_divider_round_rate,
>+ .set_rate = sg2042_clk_divider_set_rate,
>+};
>+
>+static const struct clk_ops sg2042_clk_divider_ro_ops = {
>+ .recalc_rate = sg2042_clk_divider_recalc_rate,
>+ .round_rate = sg2042_clk_divider_round_rate,
>+};
>+
>+static const struct clk_ops sg2042_clk_pll_ops = {
>+ .recalc_rate = sg2042_clk_pll_recalc_rate,
>+ .round_rate = sg2042_clk_pll_round_rate,
>+ .determine_rate = sg2042_clk_pll_determine_rate,
>+ .set_rate = sg2042_clk_pll_set_rate,
>+};
>+
>+static const struct clk_ops sg2042_clk_pll_ro_ops = {
>+ .recalc_rate = sg2042_clk_pll_recalc_rate,
>+ .round_rate = sg2042_clk_pll_round_rate,
>+};
>+
>+#define SG2042_PLL(_id, _name, _parent_name, _r_stat, _r_enable, _r_ctrl, _shift) \
>+ { \
>+ .hw.init = CLK_HW_INIT_PARENTS( \
>+ _name, \
>+ (const char *[]){_parent_name}, \
>+ &sg2042_clk_pll_ops, \
>+ CLK_GET_RATE_NOCACHE | CLK_GET_ACCURACY_NOCACHE),\
>+ .id = _id, \
>+ .name = _name, \
>+ .offset_ctrl = _r_ctrl, \
>+ .offset_status = _r_stat, \
>+ .offset_enable = _r_enable, \
>+ .shift_status_lock = 8 + _shift, \
>+ .shift_status_updating = _shift, \
>+ .shift_enable = _shift, \
>+ }
>+
>+#define SG2042_PLL_RO(_id, _name, _parent_name, _r_stat, _r_enable, _r_ctrl, _shift) \
>+ { \
>+ .hw.init = CLK_HW_INIT_PARENTS( \
>+ _name, \
>+ (const char *[]){_parent_name}, \
>+ &sg2042_clk_pll_ro_ops, \
>+ CLK_GET_RATE_NOCACHE | CLK_GET_ACCURACY_NOCACHE),\
>+ .id = _id, \
>+ .name = _name, \
>+ .offset_ctrl = _r_ctrl, \
>+ .offset_status = _r_stat, \
>+ .offset_enable = _r_enable, \
>+ .shift_status_lock = 8 + _shift, \
>+ .shift_status_updating = _shift, \
>+ .shift_enable = _shift, \
>+ }
>+
>+static struct sg2042_pll_clock sg2042_pll_clks[] = {
>+ SG2042_PLL_RO(FPLL_CLK, "fpll_clock", "cgi",
>+ R_PLL_STAT, R_PLL_CLKEN_CONTROL, R_FPLL_CONTROL, 3),
>+ SG2042_PLL_RO(DPLL0_CLK, "dpll0_clock", "cgi",
>+ R_PLL_STAT, R_PLL_CLKEN_CONTROL, R_DPLL0_CONTROL, 4),
>+ SG2042_PLL_RO(DPLL1_CLK, "dpll1_clock", "cgi",
>+ R_PLL_STAT, R_PLL_CLKEN_CONTROL, R_DPLL1_CONTROL, 5),
>+ SG2042_PLL(MPLL_CLK, "mpll_clock", "cgi",
>+ R_PLL_STAT, R_PLL_CLKEN_CONTROL, R_MPLL_CONTROL, 0),
>+};
>+
>+#define SG2042_DIV(_id, _name, _parent_name, \
>+ _r_ctrl, _shift, _width, \
>+ _div_flag, _init_val) { \
>+ .hw.init = CLK_HW_INIT_PARENTS( \
>+ _name, \
>+ (const char *[]){_parent_name}, \
>+ &sg2042_clk_divider_ops, \
>+ 0), \
>+ .id = _id, \
>+ .name = _name, \
>+ .offset_ctrl = _r_ctrl, \
>+ .shift = _shift, \
>+ .width = _width, \
>+ .div_flags = _div_flag, \
>+ .initial_val = _init_val, \
>+ .table = NULL, \
>+ }
>+
>+#define SG2042_DIV_RO(_id, _name, _parent_name, \
>+ _r_ctrl, _shift, _width, \
>+ _div_flag, _init_val) { \
>+ .hw.init = CLK_HW_INIT_PARENTS( \
>+ _name, \
>+ (const char *[]){_parent_name}, \
>+ &sg2042_clk_divider_ro_ops, \
>+ 0), \
>+ .id = _id, \
>+ .name = _name, \
>+ .offset_ctrl = _r_ctrl, \
>+ .shift = _shift, \
>+ .width = _width, \
>+ .div_flags = _div_flag, \
>+ .initial_val = _init_val, \
>+ .table = NULL, \
>+ }
>+
>+/*
>+ * DIV items in the array are sorted according to the clock-tree diagram,
>+ * from top to bottom, from upstream to downstream. Read TRM for details.
>+ */
>+#define DEF_DIVFLAG (CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO)
>+static struct sg2042_divider_clock sg2042_div_clks[] = {
>+ SG2042_DIV_RO(DIV_CLK_DPLL0_DDR01_0,
>+ "clk_div_ddr01_0", "clk_gate_ddr01_div0",
>+ R_CLKDIVREG27, 16, 5,
>+ DEF_DIVFLAG | CLK_DIVIDER_READ_ONLY, -1),
>+ SG2042_DIV_RO(DIV_CLK_FPLL_DDR01_1,
>+ "clk_div_ddr01_1", "clk_gate_ddr01_div1",
>+ R_CLKDIVREG28, 16, 5,
>+ DEF_DIVFLAG | CLK_DIVIDER_READ_ONLY, -1),
>+
>+ SG2042_DIV_RO(DIV_CLK_DPLL1_DDR23_0,
>+ "clk_div_ddr23_0", "clk_gate_ddr23_div0",
>+ R_CLKDIVREG29, 16, 5,
>+ DEF_DIVFLAG | CLK_DIVIDER_READ_ONLY, -1),
>+ SG2042_DIV_RO(DIV_CLK_FPLL_DDR23_1,
>+ "clk_div_ddr23_1", "clk_gate_ddr23_div1",
>+ R_CLKDIVREG30, 16, 5,
>+ DEF_DIVFLAG | CLK_DIVIDER_READ_ONLY, -1),
>+
>+ SG2042_DIV(DIV_CLK_MPLL_RP_CPU_NORMAL_0,
>+ "clk_div_rp_cpu_normal_0", "clk_gate_rp_cpu_normal_div0",
>+ R_CLKDIVREG0, 16, 5, DEF_DIVFLAG, 0),
>+ SG2042_DIV(DIV_CLK_FPLL_RP_CPU_NORMAL_1,
>+ "clk_div_rp_cpu_normal_1", "clk_gate_rp_cpu_normal_div1",
>+ R_CLKDIVREG1, 16, 5, DEF_DIVFLAG, 0),
>+
>+ SG2042_DIV(DIV_CLK_MPLL_AXI_DDR_0,
>+ "clk_div_axi_ddr_0", "clk_gate_axi_ddr_div0",
>+ R_CLKDIVREG25, 16, 5, DEF_DIVFLAG, 5),
>+ SG2042_DIV(DIV_CLK_FPLL_AXI_DDR_1,
>+ "clk_div_axi_ddr_1", "clk_gate_axi_ddr_div1",
>+ R_CLKDIVREG26, 16, 5, DEF_DIVFLAG, 5),
>+
>+ SG2042_DIV(DIV_CLK_FPLL_TOP_RP_CMN_DIV2,
>+ "clk_div_top_rp_cmn_div2", "clk_mux_rp_cpu_normal",
>+ R_CLKDIVREG3, 16, 16, DEF_DIVFLAG, 0),
>+
>+ SG2042_DIV(DIV_CLK_FPLL_50M_A53, "clk_div_50m_a53", "fpll_clock",
>+ R_CLKDIVREG2, 16, 8, DEF_DIVFLAG, 0),
>+ /* downstream of div_50m_a53 */
>+ SG2042_DIV(DIV_CLK_FPLL_DIV_TIMER1, "clk_div_timer1", "clk_div_50m_a53",
>+ R_CLKDIVREG6, 16, 16, DEF_DIVFLAG, 0),
>+ SG2042_DIV(DIV_CLK_FPLL_DIV_TIMER2, "clk_div_timer2", "clk_div_50m_a53",
>+ R_CLKDIVREG7, 16, 16, DEF_DIVFLAG, 0),
>+ SG2042_DIV(DIV_CLK_FPLL_DIV_TIMER3, "clk_div_timer3", "clk_div_50m_a53",
>+ R_CLKDIVREG8, 16, 16, DEF_DIVFLAG, 0),
>+ SG2042_DIV(DIV_CLK_FPLL_DIV_TIMER4, "clk_div_timer4", "clk_div_50m_a53",
>+ R_CLKDIVREG9, 16, 16, DEF_DIVFLAG, 0),
>+ SG2042_DIV(DIV_CLK_FPLL_DIV_TIMER5, "clk_div_timer5", "clk_div_50m_a53",
>+ R_CLKDIVREG10, 16, 16, DEF_DIVFLAG, 0),
>+ SG2042_DIV(DIV_CLK_FPLL_DIV_TIMER6, "clk_div_timer6", "clk_div_50m_a53",
>+ R_CLKDIVREG11, 16, 16, DEF_DIVFLAG, 0),
>+ SG2042_DIV(DIV_CLK_FPLL_DIV_TIMER7, "clk_div_timer7", "clk_div_50m_a53",
>+ R_CLKDIVREG12, 16, 16, DEF_DIVFLAG, 0),
>+ SG2042_DIV(DIV_CLK_FPLL_DIV_TIMER8, "clk_div_timer8", "clk_div_50m_a53",
>+ R_CLKDIVREG13, 16, 16, DEF_DIVFLAG, 0),
>+
>+ SG2042_DIV_RO(DIV_CLK_FPLL_UART_500M, "clk_div_uart_500m", "fpll_clock",
>+ R_CLKDIVREG4, 16, 7,
>+ CLK_DIVIDER_READ_ONLY, 0),
>+ SG2042_DIV(DIV_CLK_FPLL_AHB_LPC, "clk_div_ahb_lpc", "fpll_clock",
>+ R_CLKDIVREG5, 16, 16, DEF_DIVFLAG, 0),
>+ SG2042_DIV(DIV_CLK_FPLL_EFUSE, "clk_div_efuse", "fpll_clock",
>+ R_CLKDIVREG14, 16, 7, DEF_DIVFLAG, 0),
>+ SG2042_DIV(DIV_CLK_FPLL_TX_ETH0, "clk_div_tx_eth0", "fpll_clock",
>+ R_CLKDIVREG16, 16, 11, DEF_DIVFLAG, 0),
>+ SG2042_DIV(DIV_CLK_FPLL_PTP_REF_I_ETH0,
>+ "clk_div_ptp_ref_i_eth0", "fpll_clock",
>+ R_CLKDIVREG17, 16, 8, DEF_DIVFLAG, 0),
>+ SG2042_DIV(DIV_CLK_FPLL_REF_ETH0, "clk_div_ref_eth0", "fpll_clock",
>+ R_CLKDIVREG18, 16, 8, DEF_DIVFLAG, 0),
>+ SG2042_DIV(DIV_CLK_FPLL_EMMC, "clk_div_emmc", "fpll_clock",
>+ R_CLKDIVREG19, 16, 5, DEF_DIVFLAG, 0),
>+ SG2042_DIV(DIV_CLK_FPLL_SD, "clk_div_sd", "fpll_clock",
>+ R_CLKDIVREG21, 16, 5, DEF_DIVFLAG, 0),
>+
>+ SG2042_DIV(DIV_CLK_FPLL_TOP_AXI0, "clk_div_top_axi0", "fpll_clock",
>+ R_CLKDIVREG23, 16, 5, DEF_DIVFLAG, 0),
>+ /* downstream of div_top_axi0 */
>+ SG2042_DIV(DIV_CLK_FPLL_100K_EMMC, "clk_div_100k_emmc", "clk_div_top_axi0",
>+ R_CLKDIVREG20, 16, 16, DEF_DIVFLAG, 0),
>+ SG2042_DIV(DIV_CLK_FPLL_100K_SD, "clk_div_100k_sd", "clk_div_top_axi0",
>+ R_CLKDIVREG22, 16, 16, DEF_DIVFLAG, 0),
>+ SG2042_DIV(DIV_CLK_FPLL_GPIO_DB, "clk_div_gpio_db", "clk_div_top_axi0",
>+ R_CLKDIVREG15, 16, 16, DEF_DIVFLAG, 0),
>+
>+ SG2042_DIV(DIV_CLK_FPLL_TOP_AXI_HSPERI,
>+ "clk_div_top_axi_hsperi", "fpll_clock",
>+ R_CLKDIVREG24, 16, 5, DEF_DIVFLAG, 0),
>+};
>+
>+#define SG2042_GATE(_id, _name, _parent_name, _flags, \
>+ _r_enable, _bit_idx, _flag_r) { \
>+ .id = _id, \
>+ .name = _name, \
>+ .parent_name = _parent_name, \
>+ .flags = _flags, \
>+ .offset_enable = _r_enable, \
>+ .bit_idx = _bit_idx, \
>+ .flag_sysctrl = _flag_r, \
>+ }
>+
>+/*
>+ * GATE items in the array are sorted according to the clock-tree diagram,
>+ * from top to bottom, from upstream to downstream. Read TRM for details.
>+ */
>+static const struct sg2042_gate_clock sg2042_gate_clks[] = {
>+ SG2042_GATE(GATE_CLK_DDR01_DIV0, "clk_gate_ddr01_div0", "dpll0_clock",
>+ CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED,
>+ R_CLKDIVREG27, 4, 0),
>+ SG2042_GATE(GATE_CLK_DDR01_DIV1, "clk_gate_ddr01_div1", "fpll_clock",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL,
>+ R_CLKDIVREG28, 4, 0),
>+
>+ SG2042_GATE(GATE_CLK_DDR23_DIV0, "clk_gate_ddr23_div0", "dpll1_clock",
>+ CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED,
>+ R_CLKDIVREG29, 4, 0),
>+ SG2042_GATE(GATE_CLK_DDR23_DIV1, "clk_gate_ddr23_div1", "fpll_clock",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL,
>+ R_CLKDIVREG30, 4, 0),
>+
>+ SG2042_GATE(GATE_CLK_RP_CPU_NORMAL_DIV0, "clk_gate_rp_cpu_normal_div0", "mpll_clock",
>+ CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED | CLK_IS_CRITICAL,
>+ R_CLKDIVREG0, 4, 0),
>+ SG2042_GATE(GATE_CLK_RP_CPU_NORMAL_DIV1,
>+ "clk_gate_rp_cpu_normal_div1", "fpll_clock",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL,
>+ R_CLKDIVREG1, 4, 0),
>+
>+ SG2042_GATE(GATE_CLK_AXI_DDR_DIV0, "clk_gate_axi_ddr_div0", "mpll_clock",
>+ CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED | CLK_IS_CRITICAL,
>+ R_CLKDIVREG25, 4, 0),
>+ SG2042_GATE(GATE_CLK_AXI_DDR_DIV1, "clk_gate_axi_ddr_div1", "fpll_clock",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL,
>+ R_CLKDIVREG26, 4, 0),
>+
>+ /* upon are gate clocks as input source for the muxes */
>+
>+ SG2042_GATE(GATE_CLK_DDR01, "clk_gate_ddr01", "clk_mux_ddr01",
>+ CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED | CLK_IS_CRITICAL,
>+ R_CLKENREG1, 14, 0),
>+
>+ SG2042_GATE(GATE_CLK_DDR23, "clk_gate_ddr23", "clk_mux_ddr23",
>+ CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED | CLK_IS_CRITICAL,
>+ R_CLKENREG1, 15, 0),
>+
>+ SG2042_GATE(GATE_CLK_RP_CPU_NORMAL,
>+ "clk_gate_rp_cpu_normal", "clk_mux_rp_cpu_normal",
>+ CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED | CLK_IS_CRITICAL,
>+ R_CLKENREG0, 0, 0),
>+
>+ SG2042_GATE(GATE_CLK_AXI_DDR, "clk_gate_axi_ddr", "clk_mux_axi_ddr",
>+ CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED | CLK_IS_CRITICAL,
>+ R_CLKENREG1, 13, 0),
>+
>+ /* upon are gate clocks directly downstream of muxes */
>+
>+ /* downstream of clk_div_top_rp_cmn_div2 */
>+ SG2042_GATE(GATE_CLK_TOP_RP_CMN_DIV2,
>+ "clk_gate_top_rp_cmn_div2", "clk_div_top_rp_cmn_div2",
>+ CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED, R_CLKENREG0, 2, 0),
>+ SG2042_GATE(GATE_CLK_HSDMA, "clk_gate_hsdma", "clk_gate_top_rp_cmn_div2",
>+ CLK_SET_RATE_PARENT, R_CLKENREG1, 10, 0),
>+
>+ /*
>+ * downstream of clk_gate_rp_cpu_normal
>+ *
>+ * FIXME: there should be one 1/2 DIV between clk_gate_rp_cpu_normal
>+ * and clk_gate_axi_pcie0/clk_gate_axi_pcie1.
>+ * But the 1/2 DIV is fixed and no configurable register exported, so
>+ * when reading from these two clocks, the rate value are still the
>+ * same as that of clk_gate_rp_cpu_normal, it's not correct.
>+ * This just affects the value read.
>+ */
>+ SG2042_GATE(GATE_CLK_AXI_PCIE0,
>+ "clk_gate_axi_pcie0", "clk_gate_rp_cpu_normal",
>+ CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED, R_CLKENREG1, 8, 0),
>+ SG2042_GATE(GATE_CLK_AXI_PCIE1,
>+ "clk_gate_axi_pcie1", "clk_gate_rp_cpu_normal",
>+ CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED, R_CLKENREG1, 9, 0),
>+
>+ /* downstream of div_50m_a53 */
>+ SG2042_GATE(GATE_CLK_A53_50M, "clk_gate_a53_50m", "clk_div_50m_a53",
>+ CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED, R_CLKENREG0, 1, 0),
>+ SG2042_GATE(GATE_CLK_TIMER1, "clk_gate_timer1", "clk_div_timer1",
>+ CLK_SET_RATE_PARENT, R_CLKENREG0, 12, 0),
>+ SG2042_GATE(GATE_CLK_TIMER2, "clk_gate_timer2", "clk_div_timer2",
>+ CLK_SET_RATE_PARENT, R_CLKENREG0, 13, 0),
>+ SG2042_GATE(GATE_CLK_TIMER3, "clk_gate_timer3", "clk_div_timer3",
>+ CLK_SET_RATE_PARENT, R_CLKENREG0, 14, 0),
>+ SG2042_GATE(GATE_CLK_TIMER4, "clk_gate_timer4", "clk_div_timer4",
>+ CLK_SET_RATE_PARENT, R_CLKENREG0, 15, 0),
>+ SG2042_GATE(GATE_CLK_TIMER5, "clk_gate_timer5", "clk_div_timer5",
>+ CLK_SET_RATE_PARENT, R_CLKENREG0, 16, 0),
>+ SG2042_GATE(GATE_CLK_TIMER6, "clk_gate_timer6", "clk_div_timer6",
>+ CLK_SET_RATE_PARENT, R_CLKENREG0, 17, 0),
>+ SG2042_GATE(GATE_CLK_TIMER7, "clk_gate_timer7", "clk_div_timer7",
>+ CLK_SET_RATE_PARENT, R_CLKENREG0, 18, 0),
>+ SG2042_GATE(GATE_CLK_TIMER8, "clk_gate_timer8", "clk_div_timer8",
>+ CLK_SET_RATE_PARENT, R_CLKENREG0, 19, 0),
>+
>+ /* gate clocks downstream from div clocks one-to-one */
>+ SG2042_GATE(GATE_CLK_UART_500M, "clk_gate_uart_500m", "clk_div_uart_500m",
>+ CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED, R_CLKENREG0, 4, 0),
>+ SG2042_GATE(GATE_CLK_AHB_LPC, "clk_gate_ahb_lpc", "clk_div_ahb_lpc",
>+ CLK_SET_RATE_PARENT, R_CLKENREG0, 7, 0),
>+ SG2042_GATE(GATE_CLK_EFUSE, "clk_gate_efuse", "clk_div_efuse",
>+ CLK_SET_RATE_PARENT, R_CLKENREG0, 20, 0),
>+ SG2042_GATE(GATE_CLK_TX_ETH0, "clk_gate_tx_eth0", "clk_div_tx_eth0",
>+ CLK_SET_RATE_PARENT, R_CLKENREG0, 30, 0),
>+ SG2042_GATE(GATE_CLK_PTP_REF_I_ETH0,
>+ "clk_gate_ptp_ref_i_eth0", "clk_div_ptp_ref_i_eth0",
>+ CLK_SET_RATE_PARENT, R_CLKENREG1, 0, 0),
>+ SG2042_GATE(GATE_CLK_REF_ETH0, "clk_gate_ref_eth0", "clk_div_ref_eth0",
>+ CLK_SET_RATE_PARENT, R_CLKENREG1, 1, 0),
>+ SG2042_GATE(GATE_CLK_EMMC_100M, "clk_gate_emmc", "clk_div_emmc",
>+ CLK_SET_RATE_PARENT, R_CLKENREG1, 3, 0),
>+ SG2042_GATE(GATE_CLK_SD_100M, "clk_gate_sd", "clk_div_sd",
>+ CLK_SET_RATE_PARENT, R_CLKENREG1, 6, 0),
>+
>+ /* downstream of clk_div_top_axi0 */
>+ SG2042_GATE(GATE_CLK_AHB_ROM, "clk_gate_ahb_rom", "clk_div_top_axi0",
>+ 0, R_CLKENREG0, 8, 0),
>+ SG2042_GATE(GATE_CLK_AHB_SF, "clk_gate_ahb_sf", "clk_div_top_axi0",
>+ 0, R_CLKENREG0, 9, 0),
>+ SG2042_GATE(GATE_CLK_AXI_SRAM, "clk_gate_axi_sram", "clk_div_top_axi0",
>+ CLK_IGNORE_UNUSED, R_CLKENREG0, 10, 0),
>+ SG2042_GATE(GATE_CLK_APB_TIMER, "clk_gate_apb_timer", "clk_div_top_axi0",
>+ CLK_IGNORE_UNUSED, R_CLKENREG0, 11, 0),
>+ SG2042_GATE(GATE_CLK_APB_EFUSE, "clk_gate_apb_efuse", "clk_div_top_axi0",
>+ 0, R_CLKENREG0, 21, 0),
>+ SG2042_GATE(GATE_CLK_APB_GPIO, "clk_gate_apb_gpio", "clk_div_top_axi0",
>+ 0, R_CLKENREG0, 22, 0),
>+ SG2042_GATE(GATE_CLK_APB_GPIO_INTR,
>+ "clk_gate_apb_gpio_intr", "clk_div_top_axi0",
>+ 0, R_CLKENREG0, 23, 0),
>+ SG2042_GATE(GATE_CLK_APB_I2C, "clk_gate_apb_i2c", "clk_div_top_axi0",
>+ 0, R_CLKENREG0, 26, 0),
>+ SG2042_GATE(GATE_CLK_APB_WDT, "clk_gate_apb_wdt", "clk_div_top_axi0",
>+ 0, R_CLKENREG0, 27, 0),
>+ SG2042_GATE(GATE_CLK_APB_PWM, "clk_gate_apb_pwm", "clk_div_top_axi0",
>+ 0, R_CLKENREG0, 28, 0),
>+ SG2042_GATE(GATE_CLK_APB_RTC, "clk_gate_apb_rtc", "clk_div_top_axi0",
>+ 0, R_CLKENREG0, 29, 0),
>+ SG2042_GATE(GATE_CLK_TOP_AXI0, "clk_gate_top_axi0", "clk_div_top_axi0",
>+ CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED | CLK_IS_CRITICAL, R_CLKENREG1, 11, 0),
>+ /* downstream of DIV clocks which are sourced from clk_div_top_axi0 */
>+ SG2042_GATE(GATE_CLK_GPIO_DB, "clk_gate_gpio_db", "clk_div_gpio_db",
>+ CLK_SET_RATE_PARENT, R_CLKENREG0, 24, 0),
>+ SG2042_GATE(GATE_CLK_100K_EMMC, "clk_gate_100k_emmc", "clk_div_100k_emmc",
>+ CLK_SET_RATE_PARENT, R_CLKENREG1, 4, 0),
>+ SG2042_GATE(GATE_CLK_100K_SD, "clk_gate_100k_sd", "clk_div_100k_sd",
>+ CLK_SET_RATE_PARENT, R_CLKENREG1, 7, 0),
>+
>+ /* downstream of clk_div_top_axi_hsperi */
>+ SG2042_GATE(GATE_CLK_SYSDMA_AXI,
>+ "clk_gate_sysdma_axi", "clk_div_top_axi_hsperi",
>+ CLK_SET_RATE_PARENT, R_CLKENREG0, 3, 0),
>+ SG2042_GATE(GATE_CLK_APB_UART,
>+ "clk_gate_apb_uart", "clk_div_top_axi_hsperi",
>+ CLK_SET_RATE_PARENT, R_CLKENREG0, 5, 0),
>+ SG2042_GATE(GATE_CLK_AXI_DBG_I2C,
>+ "clk_gate_axi_dbg_i2c", "clk_div_top_axi_hsperi",
>+ CLK_SET_RATE_PARENT, R_CLKENREG0, 6, 0),
>+ SG2042_GATE(GATE_CLK_APB_SPI,
>+ "clk_gate_apb_spi", "clk_div_top_axi_hsperi",
>+ CLK_SET_RATE_PARENT, R_CLKENREG0, 25, 0),
>+ SG2042_GATE(GATE_CLK_AXI_ETH0,
>+ "clk_gate_axi_eth0", "clk_div_top_axi_hsperi",
>+ CLK_SET_RATE_PARENT, R_CLKENREG0, 31, 0),
>+ SG2042_GATE(GATE_CLK_AXI_EMMC,
>+ "clk_gate_axi_emmc", "clk_div_top_axi_hsperi",
>+ CLK_SET_RATE_PARENT, R_CLKENREG1, 2, 0),
>+ SG2042_GATE(GATE_CLK_AXI_SD,
>+ "clk_gate_axi_sd", "clk_div_top_axi_hsperi",
>+ CLK_SET_RATE_PARENT, R_CLKENREG1, 5, 0),
>+ SG2042_GATE(GATE_CLK_TOP_AXI_HSPERI,
>+ "clk_gate_top_axi_hsperi", "clk_div_top_axi_hsperi",
>+ CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED | CLK_IS_CRITICAL,
>+ R_CLKENREG1, 12, 0),
>+
>+ /* downstream of clk_gate_rp_cpu_normal about rxu */
>+ SG2042_GATE(GATE_CLK_RXU0, "clk_gate_rxu0", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 0, 1),
>+ SG2042_GATE(GATE_CLK_RXU1, "clk_gate_rxu1", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 1, 1),
>+ SG2042_GATE(GATE_CLK_RXU2, "clk_gate_rxu2", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 2, 1),
>+ SG2042_GATE(GATE_CLK_RXU3, "clk_gate_rxu3", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 3, 1),
>+ SG2042_GATE(GATE_CLK_RXU4, "clk_gate_rxu4", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 4, 1),
>+ SG2042_GATE(GATE_CLK_RXU5, "clk_gate_rxu5", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 5, 1),
>+ SG2042_GATE(GATE_CLK_RXU6, "clk_gate_rxu6", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 6, 1),
>+ SG2042_GATE(GATE_CLK_RXU7, "clk_gate_rxu7", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 7, 1),
>+ SG2042_GATE(GATE_CLK_RXU8, "clk_gate_rxu8", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 8, 1),
>+ SG2042_GATE(GATE_CLK_RXU9, "clk_gate_rxu9", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 9, 1),
>+ SG2042_GATE(GATE_CLK_RXU10, "clk_gate_rxu10", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 10, 1),
>+ SG2042_GATE(GATE_CLK_RXU11, "clk_gate_rxu11", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 11, 1),
>+ SG2042_GATE(GATE_CLK_RXU12, "clk_gate_rxu12", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 12, 1),
>+ SG2042_GATE(GATE_CLK_RXU13, "clk_gate_rxu13", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 13, 1),
>+ SG2042_GATE(GATE_CLK_RXU14, "clk_gate_rxu14", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 14, 1),
>+ SG2042_GATE(GATE_CLK_RXU15, "clk_gate_rxu15", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 15, 1),
>+ SG2042_GATE(GATE_CLK_RXU16, "clk_gate_rxu16", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 16, 1),
>+ SG2042_GATE(GATE_CLK_RXU17, "clk_gate_rxu17", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 17, 1),
>+ SG2042_GATE(GATE_CLK_RXU18, "clk_gate_rxu18", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 18, 1),
>+ SG2042_GATE(GATE_CLK_RXU19, "clk_gate_rxu19", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 19, 1),
>+ SG2042_GATE(GATE_CLK_RXU20, "clk_gate_rxu20", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 20, 1),
>+ SG2042_GATE(GATE_CLK_RXU21, "clk_gate_rxu21", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 21, 1),
>+ SG2042_GATE(GATE_CLK_RXU22, "clk_gate_rxu22", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 22, 1),
>+ SG2042_GATE(GATE_CLK_RXU23, "clk_gate_rxu23", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 23, 1),
>+ SG2042_GATE(GATE_CLK_RXU24, "clk_gate_rxu24", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 24, 1),
>+ SG2042_GATE(GATE_CLK_RXU25, "clk_gate_rxu25", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 25, 1),
>+ SG2042_GATE(GATE_CLK_RXU26, "clk_gate_rxu26", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 26, 1),
>+ SG2042_GATE(GATE_CLK_RXU27, "clk_gate_rxu27", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 27, 1),
>+ SG2042_GATE(GATE_CLK_RXU28, "clk_gate_rxu28", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 28, 1),
>+ SG2042_GATE(GATE_CLK_RXU29, "clk_gate_rxu29", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 29, 1),
>+ SG2042_GATE(GATE_CLK_RXU30, "clk_gate_rxu30", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 30, 1),
>+ SG2042_GATE(GATE_CLK_RXU31, "clk_gate_rxu31", "clk_gate_rp_cpu_normal",
>+ 0, R_RP_RXU_CLK_ENABLE, 31, 1),
>+
>+ /* downstream of clk_gate_rp_cpu_normal about mp */
>+ SG2042_GATE(GATE_CLK_MP0, "clk_gate_mp0", "clk_gate_rp_cpu_normal",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL, R_MP0_CONTROL_REG, 0, 1),
>+ SG2042_GATE(GATE_CLK_MP1, "clk_gate_mp1", "clk_gate_rp_cpu_normal",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL, R_MP1_CONTROL_REG, 0, 1),
>+ SG2042_GATE(GATE_CLK_MP2, "clk_gate_mp2", "clk_gate_rp_cpu_normal",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL, R_MP2_CONTROL_REG, 0, 1),
>+ SG2042_GATE(GATE_CLK_MP3, "clk_gate_mp3", "clk_gate_rp_cpu_normal",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL, R_MP3_CONTROL_REG, 0, 1),
>+ SG2042_GATE(GATE_CLK_MP4, "clk_gate_mp4", "clk_gate_rp_cpu_normal",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL, R_MP4_CONTROL_REG, 0, 1),
>+ SG2042_GATE(GATE_CLK_MP5, "clk_gate_mp5", "clk_gate_rp_cpu_normal",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL, R_MP5_CONTROL_REG, 0, 1),
>+ SG2042_GATE(GATE_CLK_MP6, "clk_gate_mp6", "clk_gate_rp_cpu_normal",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL, R_MP6_CONTROL_REG, 0, 1),
>+ SG2042_GATE(GATE_CLK_MP7, "clk_gate_mp7", "clk_gate_rp_cpu_normal",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL, R_MP7_CONTROL_REG, 0, 1),
>+ SG2042_GATE(GATE_CLK_MP8, "clk_gate_mp8", "clk_gate_rp_cpu_normal",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL, R_MP8_CONTROL_REG, 0, 1),
>+ SG2042_GATE(GATE_CLK_MP9, "clk_gate_mp9", "clk_gate_rp_cpu_normal",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL, R_MP9_CONTROL_REG, 0, 1),
>+ SG2042_GATE(GATE_CLK_MP10, "clk_gate_mp10", "clk_gate_rp_cpu_normal",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL, R_MP10_CONTROL_REG, 0, 1),
>+ SG2042_GATE(GATE_CLK_MP11, "clk_gate_mp11", "clk_gate_rp_cpu_normal",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL, R_MP11_CONTROL_REG, 0, 1),
>+ SG2042_GATE(GATE_CLK_MP12, "clk_gate_mp12", "clk_gate_rp_cpu_normal",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL, R_MP12_CONTROL_REG, 0, 1),
>+ SG2042_GATE(GATE_CLK_MP13, "clk_gate_mp13", "clk_gate_rp_cpu_normal",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL, R_MP13_CONTROL_REG, 0, 1),
>+ SG2042_GATE(GATE_CLK_MP14, "clk_gate_mp14", "clk_gate_rp_cpu_normal",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL, R_MP14_CONTROL_REG, 0, 1),
>+ SG2042_GATE(GATE_CLK_MP15, "clk_gate_mp15", "clk_gate_rp_cpu_normal",
>+ CLK_IGNORE_UNUSED | CLK_IS_CRITICAL, R_MP15_CONTROL_REG, 0, 1),
>+};
>+
>+#define SG2042_MUX(_id, _name, _parent_names, _flags, _r_select, _shift, _width) { \
>+ .id = _id, \
>+ .name = _name, \
>+ .parent_names = _parent_names, \
>+ .num_parents = ARRAY_SIZE(_parent_names), \
>+ .flags = _flags, \
>+ .offset_select = _r_select, \
>+ .shift = _shift, \
>+ .width = _width, \
>+ }
>+
>+/*
>+ * Note: regarding names for mux clock, "0/1" or "div0/div1" means the
>+ * first/second parent input source, not the register value.
>+ * For example:
>+ * "clk_div_ddr01_0" is the name of Clock divider 0 control of DDR01, and
>+ * "clk_gate_ddr01_div0" is the gate clock in front of the "clk_div_ddr01_0",
>+ * they are both controlled by register CLKDIVREG27;
>+ * "clk_div_ddr01_1" is the name of Clock divider 1 control of DDR01, and
>+ * "clk_gate_ddr01_div1" is the gate clock in front of the "clk_div_ddr01_1",
>+ * they are both controlled by register CLKDIVREG28;
>+ * While for register value of mux selection, use Clock Select for DDR01’s clock
>+ * as example, see CLKSELREG0, bit[2].
>+ * 1: Select in_dpll0_clk as clock source, correspondng to the parent input
>+ * source from "clk_div_ddr01_0".
>+ * 0: Select in_fpll_clk as clock source, corresponding to the parent input
>+ * source from "clk_div_ddr01_1".
>+ * So we need a table to define the array of register values corresponding to
>+ * the parent index and tell CCF about this when registering mux clock.
>+ */
>+static const u32 sg2042_mux_table[] = {1, 0};
>+
>+static const char *const clk_mux_ddr01_p[] = {
>+ "clk_div_ddr01_0", "clk_div_ddr01_1"};
>+static const char *const clk_mux_ddr23_p[] = {
>+ "clk_div_ddr23_0", "clk_div_ddr23_1"};
>+static const char *const clk_mux_rp_cpu_normal_p[] = {
>+ "clk_div_rp_cpu_normal_0", "clk_div_rp_cpu_normal_1"};
>+static const char *const clk_mux_axi_ddr_p[] = {
>+ "clk_div_axi_ddr_0", "clk_div_axi_ddr_1"};
>+
>+static struct sg2042_mux_clock sg2042_mux_clks[] = {
>+ SG2042_MUX(MUX_CLK_DDR01, "clk_mux_ddr01", clk_mux_ddr01_p,
>+ CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT | CLK_MUX_READ_ONLY,
>+ R_CLKSELREG0, 2, 1),
>+ SG2042_MUX(MUX_CLK_DDR23, "clk_mux_ddr23", clk_mux_ddr23_p,
>+ CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT | CLK_MUX_READ_ONLY,
>+ R_CLKSELREG0, 3, 1),
>+ SG2042_MUX(MUX_CLK_RP_CPU_NORMAL, "clk_mux_rp_cpu_normal", clk_mux_rp_cpu_normal_p,
>+ CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
>+ R_CLKSELREG0, 0, 1),
>+ SG2042_MUX(MUX_CLK_AXI_DDR, "clk_mux_axi_ddr", clk_mux_axi_ddr_p,
>+ CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
>+ R_CLKSELREG0, 1, 1),
>+};
>+
>+DEFINE_SPINLOCK(sg2042_clk_lock);
>+
>+static int sg2042_clk_register_plls(struct sg2042_clk_data *clk_data,
>+ struct sg2042_pll_clock pll_clks[],
>+ int num_pll_clks)
>+{
>+ struct clk_hw *hw;
>+ struct sg2042_pll_clock *pll;
>+ int i, ret = 0;
>+
>+ for (i = 0; i < num_pll_clks; i++) {
>+ pll = &(pll_clks[i]);
>+ /* assign these for ops usage during registration */
>+ pll->map = clk_data->regmap_syscon;
>+ pll->lock = &sg2042_clk_lock;
>+
>+ hw = &pll->hw;
>+ ret = clk_hw_register(NULL, hw);
>+ if (ret) {
>+ pr_err("failed to register clock %s\n", pll->name);
>+ break;
>+ }
>+
>+#if defined(DEBUG)
>+ pr_info("registered [%d : %s]\n", pll->id, pll->name);
>+#endif
>+ clk_data->onecell_data.hws[pll->id] = hw;
>+ }
>+
>+ /* leave unregister to outside if failed */
>+ return ret;
>+}
>+
>+static int sg2042_clk_register_divs(struct sg2042_clk_data *clk_data,
>+ struct sg2042_divider_clock div_clks[],
>+ int num_div_clks)
>+{
>+ struct clk_hw *hw;
>+ struct sg2042_divider_clock *div;
>+ int i, val, ret = 0;
>+
>+ for (i = 0; i < num_div_clks; i++) {
>+ div = &(div_clks[i]);
>+
>+ if (div->div_flags & CLK_DIVIDER_HIWORD_MASK) {
>+ if (div->width + div->shift > 16) {
>+ pr_warn("divider value exceeds LOWORD field\n");
>+ ret = -EINVAL;
>+ break;
>+ }
>+ }
>+
>+ div->reg = clk_data->iobase + div->offset_ctrl;
>+ div->lock = &sg2042_clk_lock;
>+
>+ hw = &div->hw;
>+ ret = clk_hw_register(NULL, hw);
>+ if (ret) {
>+ pr_err("failed to register clock %s\n", div->name);
>+ break;
>+ }
>+
>+#if defined(DEBUG)
>+ pr_info("registered [%d : %s]\n", div->id, div->name);
>+#endif
>+ clk_data->onecell_data.hws[div->id] = hw;
>+
>+ if (div->initial_val >= 0) {
>+ val = readl(div->reg);
>+
>+ /*
>+ * set a default divider factor,
>+ * clk driver should not select divider clock as the
>+ * clock source, before set the divider by right process
>+ * (assert div, set div factor, de assert div).
>+ */
>+ if (div->initial_val > 0)
>+ val |= (div->initial_val << 16 | 1 << 3);
>+ else {
>+ /*
>+ * the div register is config to use divider
>+ * factor, don't change divider
>+ */
>+ if (!(val >> 3 & 0x1))
>+ val |= 1 << 16;
>+ }
>+
>+ writel(val, div->reg);
>+ }
>+ }
>+
>+ /* leave unregister to outside if failed */
>+ return ret;
>+}
>+
>+static int sg2042_clk_register_gates(struct sg2042_clk_data *clk_data,
>+ const struct sg2042_gate_clock gate_clks[],
>+ int num_gate_clks)
>+{
>+ struct clk_hw *hw;
>+ const struct sg2042_gate_clock *gate;
>+ int i, ret = 0;
>+ void __iomem *reg;
>+
>+ for (i = 0; i < num_gate_clks; i++) {
>+ gate = &(gate_clks[i]);
>+ if (gate->flag_sysctrl)
>+ reg = clk_data->iobase_syscon + gate->offset_enable;
>+ else
>+ reg = clk_data->iobase + gate->offset_enable;
>+ hw = clk_hw_register_gate(
>+ NULL,
>+ gate->name,
>+ gate->parent_name,
>+ gate->flags,
>+ reg,
>+ gate->bit_idx,
>+ 0,
>+ &sg2042_clk_lock);
>+ if (IS_ERR(hw)) {
>+ pr_err("failed to register clock %s\n", gate->name);
>+ ret = PTR_ERR(hw);
>+ break;
>+ }
>+
>+#if defined(DEBUG)
>+ pr_info("registered [%d : %s]\n", gate->id, gate->name);
>+#endif
Drop, no need for this.
>+ clk_data->onecell_data.hws[gate->id] = hw;
>+ }
>+
>+ /* leave unregister to outside if failed */
>+ return ret;
>+}
>+
>+static int sg2042_mux_notifier_cb(struct notifier_block *nb,
>+ unsigned long event, void *data)
>+{
>+ int ret = 0;
>+ struct clk_notifier_data *ndata = data;
>+ struct clk_hw *hw = __clk_get_hw(ndata->clk);
>+ const struct clk_ops *ops = &clk_mux_ops;
>+ struct sg2042_mux_clock *mux = to_sg2042_mux_nb(nb);
>+
>+ /* To switch to fpll before changing rate and restore after that */
>+ if (event == PRE_RATE_CHANGE) {
>+ mux->original_index = ops->get_parent(hw);
>+
>+ /*
>+ * "1" is the array index of the second parent input source of
>+ * mux. For SG2042, it's fpll for all mux clocks.
>+ * "0" is the array index of the frist parent input source of
>+ * mux, For SG2042, it's mpll.
>+ * FIXME, any good idea to avoid magic number?
>+ */
>+ if (mux->original_index == 0)
>+ ret = ops->set_parent(hw, 1);
>+ } else if (event == POST_RATE_CHANGE) {
>+ ret = ops->set_parent(hw, mux->original_index);
>+ }
>+
>+ return notifier_from_errno(ret);
>+}
>+
>+static int sg2042_clk_register_muxs(struct sg2042_clk_data *clk_data,
>+ struct sg2042_mux_clock mux_clks[],
>+ int num_mux_clks)
>+{
>+ struct clk_hw *hw;
>+ struct sg2042_mux_clock *mux;
>+ int i, ret = 0;
>+
>+ for (i = 0; i < num_mux_clks; i++) {
>+ mux = &(mux_clks[i]);
>+
>+ hw = clk_hw_register_mux_table(
>+ NULL,
>+ mux->name,
>+ mux->parent_names,
>+ mux->num_parents,
>+ mux->flags,
>+ clk_data->iobase + mux->offset_select,
>+ mux->shift,
>+ BIT(mux->width) - 1,
>+ 0,
>+ sg2042_mux_table,
>+ &sg2042_clk_lock);
>+ if (IS_ERR(hw)) {
>+ pr_err("failed to register clock %s\n", mux->name);
>+ ret = PTR_ERR(hw);
>+ break;
>+ }
>+
>+#if defined(DEBUG)
>+ pr_info("registered [%d : %s]\n", mux->id, mux->name);
>+#endif
the same as above.
>+ clk_data->onecell_data.hws[mux->id] = hw;
>+
>+ /*
>+ * FIXME: Theoretically, we should set parent for the
>+ * mux, but seems hardware has done this for us with
>+ * default value, so we don't set parent again here.
>+ */
>+
>+ if (!(mux->flags & CLK_MUX_READ_ONLY)) {
>+ mux->clk_nb.notifier_call = sg2042_mux_notifier_cb;
>+ ret = clk_notifier_register(hw->clk, &(mux->clk_nb));
>+ if (ret) {
>+ pr_err("failed to register clock notifier for %s\n",
>+ mux->name);
>+ goto error_cleanup;
>+ }
>+ }
>+ }
>+
>+ return 0;
>+
>+error_cleanup:
>+ /* unregister notifier and release the memory allocated */
>+ for (i = 0; i < num_mux_clks; i++) {
>+ mux = &(mux_clks[i]);
>+
>+ hw = clk_data->onecell_data.hws[mux->id];
>+
>+ if (hw != NULL)
>+ clk_notifier_unregister(hw->clk, &(mux->clk_nb));
>+ }
>+
>+ /* leave clk unregister to outside if failed */
>+ return ret;
>+}
>+
>+static int __init sg2042_clk_init_clk_data(
>+ struct device_node *node,
>+ int num_clks,
>+ struct sg2042_clk_data **pp_clk_data)
>+{
>+ int ret = 0;
>+ struct sg2042_clk_data *clk_data = NULL;
>+ struct device_node *np_syscon;
>+
>+ np_syscon = of_parse_phandle(node, "system-ctrl", 0);
>+ if (!np_syscon) {
>+ pr_err("failed to get system-ctrl node\n");
>+ ret = -EINVAL;
>+ goto error_out;
>+ }
>+
>+ clk_data = kzalloc(struct_size(clk_data, onecell_data.hws, num_clks), GFP_KERNEL);
>+ if (!clk_data) {
>+ ret = -ENOMEM;
>+ goto error_out;
>+ }
>+
>+ clk_data->regmap_syscon = device_node_to_regmap(np_syscon);
>+ if (IS_ERR_OR_NULL(clk_data->regmap_syscon)) {
>+ pr_err("cannot get regmap_syscon %ld\n", PTR_ERR(clk_data->regmap_syscon));
>+ ret = -ENODEV;
>+ goto cleanup;
>+ }
>+ clk_data->iobase_syscon = of_iomap(np_syscon, 0);
>+ clk_data->iobase = of_iomap(node, 0);
>+ clk_data->onecell_data.num = num_clks;
>+
>+ *pp_clk_data = clk_data;
>+ return ret;
>+
>+cleanup:
>+ kfree(clk_data);
>+
>+error_out:
>+ return ret;
>+}
>+
>+static void __init sg2042_clk_init(struct device_node *node)
>+{
>+ struct sg2042_clk_data *clk_data = NULL;
>+ int i, ret = 0;
>+ int num_clks = 0;
>+
>+ num_clks = ARRAY_SIZE(sg2042_pll_clks) +
>+ ARRAY_SIZE(sg2042_div_clks) +
>+ ARRAY_SIZE(sg2042_gate_clks) +
>+ ARRAY_SIZE(sg2042_mux_clks);
>+ if (num_clks == 0) {
>+ ret = -EINVAL;
>+ goto error_out;
>+ }
>+
>+ ret = sg2042_clk_init_clk_data(node, num_clks, &clk_data);
>+ if (ret < 0)
>+ goto error_out;
>+
>+ ret = sg2042_clk_register_plls(clk_data, sg2042_pll_clks,
>+ ARRAY_SIZE(sg2042_pll_clks));
>+ if (ret)
>+ goto cleanup;
>+
>+ ret = sg2042_clk_register_divs(clk_data, sg2042_div_clks,
>+ ARRAY_SIZE(sg2042_div_clks));
>+ if (ret)
>+ goto cleanup;
>+
>+ ret = sg2042_clk_register_gates(clk_data, sg2042_gate_clks,
>+ ARRAY_SIZE(sg2042_gate_clks));
>+ if (ret)
>+ goto cleanup;
>+
>+ ret = sg2042_clk_register_muxs(clk_data, sg2042_mux_clks,
>+ ARRAY_SIZE(sg2042_mux_clks));
>+ if (ret)
>+ goto cleanup;
>+
>+#if defined(DEBUG)
>+ for (i = 0; i < num_clks; i++)
>+ pr_info("provider [%d]: %s\n", i, clk_hw_get_name(clk_data->onecell_data.hws[i]));
>+#endif
>+ ret = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, &clk_data->onecell_data);
>+ if (ret)
>+ goto cleanup;
>+
>+ return;
>+
>+cleanup:
>+ for (i = 0; i < num_clks; i++) {
>+ if (clk_data->onecell_data.hws[i] != NULL)
>+ clk_hw_unregister(clk_data->onecell_data.hws[i]);
>+ }
>+ kfree(clk_data);
>+
>+error_out:
>+ pr_err("%s failed error number %d\n", __func__, ret);
>+}
>+
>+CLK_OF_DECLARE(sg2042_clk, "sophgo,sg2042-clkgen", sg2042_clk_init);
>diff --git a/drivers/clk/sophgo/clk-sophgo-sg2042.h b/drivers/clk/sophgo/clk-sophgo-sg2042.h
>new file mode 100644
>index 000000000000..651d93033547
>--- /dev/null
>+++ b/drivers/clk/sophgo/clk-sophgo-sg2042.h
>@@ -0,0 +1,226 @@
>+/* SPDX-License-Identifier: GPL-2.0 */
>+
>+#ifndef __CLK_SOPHGO_SG2042_H
>+#define __CLK_SOPHGO_SG2042_H
>+
>+#include <linux/regmap.h>
>+#include <linux/clk.h>
>+#include <linux/clk-provider.h>
>+
>+/* Registers defined in SYS_CTRL */
>+#define R_PLL_STAT 0xC0
>+#define R_PLL_CLKEN_CONTROL 0xC4
>+#define R_MPLL_CONTROL 0xE8
>+#define R_FPLL_CONTROL 0xF4
>+#define R_DPLL0_CONTROL 0xF8
>+#define R_DPLL1_CONTROL 0xFC
>+
>+#define R_RP_RXU_CLK_ENABLE 0x0368
>+#define R_MP0_STATUS_REG 0x0380
>+#define R_MP0_CONTROL_REG 0x0384
>+#define R_MP1_STATUS_REG 0x0388
>+#define R_MP1_CONTROL_REG 0x038C
>+#define R_MP2_STATUS_REG 0x0390
>+#define R_MP2_CONTROL_REG 0x0394
>+#define R_MP3_STATUS_REG 0x0398
>+#define R_MP3_CONTROL_REG 0x039C
>+#define R_MP4_STATUS_REG 0x03A0
>+#define R_MP4_CONTROL_REG 0x03A4
>+#define R_MP5_STATUS_REG 0x03A8
>+#define R_MP5_CONTROL_REG 0x03AC
>+#define R_MP6_STATUS_REG 0x03B0
>+#define R_MP6_CONTROL_REG 0x03B4
>+#define R_MP7_STATUS_REG 0x03B8
>+#define R_MP7_CONTROL_REG 0x03BC
>+#define R_MP8_STATUS_REG 0x03C0
>+#define R_MP8_CONTROL_REG 0x03C4
>+#define R_MP9_STATUS_REG 0x03C8
>+#define R_MP9_CONTROL_REG 0x03CC
>+#define R_MP10_STATUS_REG 0x03D0
>+#define R_MP10_CONTROL_REG 0x03D4
>+#define R_MP11_STATUS_REG 0x03D8
>+#define R_MP11_CONTROL_REG 0x03DC
>+#define R_MP12_STATUS_REG 0x03E0
>+#define R_MP12_CONTROL_REG 0x03E4
>+#define R_MP13_STATUS_REG 0x03E8
>+#define R_MP13_CONTROL_REG 0x03EC
>+#define R_MP14_STATUS_REG 0x03F0
>+#define R_MP14_CONTROL_REG 0x03F4
>+#define R_MP15_STATUS_REG 0x03F8
>+#define R_MP15_CONTROL_REG 0x03FC
>+
>+/* Registers defined in CLOCK */
>+#define R_CLKENREG0 0x00
>+#define R_CLKENREG1 0x04
>+#define R_CLKSELREG0 0x20
>+#define R_CLKDIVREG0 0x40
>+#define R_CLKDIVREG1 0x44
>+#define R_CLKDIVREG2 0x48
>+#define R_CLKDIVREG3 0x4C
>+#define R_CLKDIVREG4 0x50
>+#define R_CLKDIVREG5 0x54
>+#define R_CLKDIVREG6 0x58
>+#define R_CLKDIVREG7 0x5C
>+#define R_CLKDIVREG8 0x60
>+#define R_CLKDIVREG9 0x64
>+#define R_CLKDIVREG10 0x68
>+#define R_CLKDIVREG11 0x6C
>+#define R_CLKDIVREG12 0x70
>+#define R_CLKDIVREG13 0x74
>+#define R_CLKDIVREG14 0x78
>+#define R_CLKDIVREG15 0x7C
>+#define R_CLKDIVREG16 0x80
>+#define R_CLKDIVREG17 0x84
>+#define R_CLKDIVREG18 0x88
>+#define R_CLKDIVREG19 0x8C
>+#define R_CLKDIVREG20 0x90
>+#define R_CLKDIVREG21 0x94
>+#define R_CLKDIVREG22 0x98
>+#define R_CLKDIVREG23 0x9C
>+#define R_CLKDIVREG24 0xA0
>+#define R_CLKDIVREG25 0xA4
>+#define R_CLKDIVREG26 0xA8
>+#define R_CLKDIVREG27 0xAC
>+#define R_CLKDIVREG28 0xB0
>+#define R_CLKDIVREG29 0xB4
>+#define R_CLKDIVREG30 0xB8
>+
>+/*
>+ * clock common data
>+ * @iobase: address of clock-controller
>+ * @iobase_syscon & @regmap_syscon: point to the same address of system-controller,
>+ * the reason we use two different type of pointer just due to PLL uses
>+ * regmap while others use iomem.
>+ * @lock: clock register access lock
>+ * @onecell_data: used for adding providers.
>+ */
>+struct sg2042_clk_data {
>+ void __iomem *iobase;
>+ void __iomem *iobase_syscon;
>+ struct regmap *regmap_syscon;
>+ struct clk_hw_onecell_data onecell_data;
>+};
>+
>+/*
>+ * PLL clock
>+ * @id: used to map clk_onecell_data
>+ * @name: used for print even when clk registration failed
>+ * @map: used for regmap read/write, regmap is more useful
>+ * then iomem address when we have multiple offsets
>+ * for different registers.
>+ * NOTE: PLL registers are all in SYS_CTRL!
>+ * @lock: spinlock to protect register access
>+ * @offset_status: offset of pll status registers
>+ * @offset_enable: offset of pll enable registers
>+ * @offset_ctrl: offset of pll control registers
>+ * @shift_status_lock: shift of XXX_LOCK in pll status register
>+ * @shift_status_updating: shift of UPDATING_XXX in pll status register
>+ * @shift_enable: shift of XXX_CLK_EN in pll enable register
>+ */
>+struct sg2042_pll_clock {
>+ struct clk_hw hw;
>+
>+ /* private data */
>+ unsigned int id;
>+ const char *name;
>+
>+ struct regmap *map;
>+ spinlock_t *lock;
>+
>+ u32 offset_status;
>+ u32 offset_enable;
>+ u32 offset_ctrl;
>+ u8 shift_status_lock;
>+ u8 shift_status_updating;
>+ u8 shift_enable;
>+};
>+
>+#define to_sg2042_pll_clk(_hw) container_of(_hw, struct sg2042_pll_clock, hw)
>+
>+/*
>+ * Divider clock
>+ * @id: used to map clk_onecell_data
>+ * @name: used for print even when clk registration failed
>+ * @reg: used for readl/writel.
>+ * NOTE: DIV registers are ALL in CLOCK!
>+ * @lock: spinlock to protect register access
>+ * @offset_ctrl: offset of divider control registers
>+ * @shift: shift of "Clock Divider Factor" in divider control register
>+ * @width: width of "Clock Divider Factor" in divider control register
>+ * @div_flags: private flags for this clock, not for framework-specific
>+ * @initial_val: initial value of the divider, a value < 0 means ignoring
>+ * setting of initial value.
>+ * @table: the div table that the divider supports
>+ */
>+struct sg2042_divider_clock {
>+ struct clk_hw hw;
>+
>+ /* private data */
>+ unsigned int id;
>+ const char *name;
>+
>+ void __iomem *reg;
>+ spinlock_t *lock;
>+
>+ unsigned long offset_ctrl;
>+ u8 shift;
>+ u8 width;
>+ u8 div_flags;
>+ s32 initial_val;
>+ struct clk_div_table *table;
>+};
>+
>+#define to_sg2042_clk_divider(_hw) \
>+ container_of(_hw, struct sg2042_divider_clock, hw)
>+
>+/*
>+ * Gate clock
>+ * @id: used to map clk_onecell_data
>+ * @name: string of this clock name
>+ * @parent_name: string of parent clock name
>+ * @flags: framework-specific flags for this clock
>+ * @offset_enable: offset of gate enable registers
>+ * @bit_idx: which bit in the register controls gating of this clock
>+ * @flag_sysctrl: flag if this clock is controlled by registers defined
>+ * in SYS_CTRL, 1: yes, 0: no, it's in CLOCK.
>+ * NOTE: Gate registers are scattered in SYS_CTRL and CLOCK!
>+ */
>+struct sg2042_gate_clock {
>+ unsigned int id;
>+ const char *name;
>+ const char *parent_name;
>+ unsigned long flags;
>+ unsigned long offset_enable;
>+ u8 bit_idx;
>+ u8 flag_sysctrl;
>+};
>+
>+/*
>+ * Mux clock
>+ * @id: used to map clk_onecell_data
>+ * @name: string of this clock name
>+ * @parent_name: string array of parents' clock name
>+ * @flags: framework-specific flags for this clock
>+ * @offset_select: offset of mux selection registers
>+ * NOTE: MUX registers are ALL in CLOCK!
>+ * @shift: shift of "Clock Select" in mux selection register
>+ * @width: width of "Clock Select" in mux selection register
>+ * @clk_nb: used for notification
>+ * @original_index: set by notifier callback
>+ */
>+struct sg2042_mux_clock {
>+ unsigned int id;
>+ const char *name;
>+ const char * const *parent_names;
>+ u8 num_parents;
>+ unsigned long flags;
>+ unsigned long offset_select;
>+ u8 shift;
>+ u8 width;
>+ struct notifier_block clk_nb;
>+ u8 original_index;
>+};
>+
>+#define to_sg2042_mux_nb(_nb) container_of(_nb, struct sg2042_mux_clock, clk_nb)
>+
>+#endif /* __CLK_SOPHGO_SG2042_H */
>--
>2.25.1
>
>
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