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Message-Id: <1624981102-26248-11-git-send-email-zhouyanjie@wanyeetech.com>
Date: Tue, 29 Jun 2021 23:38:21 +0800
From: 周琰杰 (Zhou Yanjie)
<zhouyanjie@...yeetech.com>
To: mturquette@...libre.com, sboyd@...nel.org, robh+dt@...nel.org
Cc: linux-mips@...r.kernel.org, linux-clk@...r.kernel.org,
linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
paul@...pouillou.net, dongsheng.qiu@...enic.com,
aric.pzqi@...enic.com, rick.tyliu@...enic.com,
sihui.liu@...enic.com, jun.jiang@...enic.com,
sernia.zhou@...mail.com
Subject: [PATCH v6 10/11] clk: Ingenic: Add CGU driver for JZ4775.
Add support for the clocks provided by the CGU in the Ingenic JZ4775
SoC, making use of the cgu code to do the heavy lifting.
Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@...yeetech.com>
---
Notes:
v5:
New patch.
v5->v6:
No change.
drivers/clk/ingenic/Kconfig | 10 +
drivers/clk/ingenic/Makefile | 1 +
drivers/clk/ingenic/jz4775-cgu.c | 572 +++++++++++++++++++++++++++++++++++++++
3 files changed, 583 insertions(+)
create mode 100644 drivers/clk/ingenic/jz4775-cgu.c
diff --git a/drivers/clk/ingenic/Kconfig b/drivers/clk/ingenic/Kconfig
index 898f1bc..7fda7bb 100644
--- a/drivers/clk/ingenic/Kconfig
+++ b/drivers/clk/ingenic/Kconfig
@@ -45,6 +45,16 @@ config INGENIC_CGU_JZ4770
If building for a JZ4770 SoC, you want to say Y here.
+config INGENIC_CGU_JZ4775
+ bool "Ingenic JZ4775 CGU driver"
+ default MACH_JZ4775
+ select INGENIC_CGU_COMMON
+ help
+ Support the clocks provided by the CGU hardware on Ingenic JZ4775
+ and compatible SoCs.
+
+ If building for a JZ4775 SoC, you want to say Y here.
+
config INGENIC_CGU_JZ4780
bool "Ingenic JZ4780 CGU driver"
default MACH_JZ4780
diff --git a/drivers/clk/ingenic/Makefile b/drivers/clk/ingenic/Makefile
index 9edfaf4..aed8da4 100644
--- a/drivers/clk/ingenic/Makefile
+++ b/drivers/clk/ingenic/Makefile
@@ -4,6 +4,7 @@ obj-$(CONFIG_INGENIC_CGU_JZ4740) += jz4740-cgu.o
obj-$(CONFIG_INGENIC_CGU_JZ4725B) += jz4725b-cgu.o
obj-$(CONFIG_INGENIC_CGU_JZ4760) += jz4760-cgu.o
obj-$(CONFIG_INGENIC_CGU_JZ4770) += jz4770-cgu.o
+obj-$(CONFIG_INGENIC_CGU_JZ4775) += jz4775-cgu.o
obj-$(CONFIG_INGENIC_CGU_JZ4780) += jz4780-cgu.o
obj-$(CONFIG_INGENIC_CGU_X1000) += x1000-cgu.o
obj-$(CONFIG_INGENIC_CGU_X1830) += x1830-cgu.o
diff --git a/drivers/clk/ingenic/jz4775-cgu.c b/drivers/clk/ingenic/jz4775-cgu.c
new file mode 100644
index 00000000..5c8a227
--- /dev/null
+++ b/drivers/clk/ingenic/jz4775-cgu.c
@@ -0,0 +1,572 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * JZ4775 SoC CGU driver
+ * Copyright (c) 2020 周琰杰 (Zhou Yanjie) <zhouyanjie@...yeetech.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/of.h>
+
+#include <dt-bindings/clock/jz4775-cgu.h>
+
+#include "cgu.h"
+#include "pm.h"
+
+/* CGU register offsets */
+#define CGU_REG_CPCCR 0x00
+#define CGU_REG_APLL 0x10
+#define CGU_REG_MPLL 0x14
+#define CGU_REG_CLKGR 0x20
+#define CGU_REG_OPCR 0x24
+#define CGU_REG_DDRCDR 0x2c
+#define CGU_REG_VPUCDR 0x30
+#define CGU_REG_USBPCR 0x3c
+#define CGU_REG_USBPCR1 0x48
+#define CGU_REG_USBCDR 0x50
+#define CGU_REG_I2SCDR 0x60
+#define CGU_REG_LPCDR 0x64
+#define CGU_REG_MSC0CDR 0x68
+#define CGU_REG_UHCCDR 0x6c
+#define CGU_REG_SSICDR 0x74
+#define CGU_REG_CIM0CDR 0x7c
+#define CGU_REG_CIM1CDR 0x80
+#define CGU_REG_PCMCDR 0x84
+#define CGU_REG_MSC1CDR 0xa4
+#define CGU_REG_MSC2CDR 0xa8
+#define CGU_REG_BCHCDR 0xac
+#define CGU_REG_CMP_INTR 0xb0
+#define CGU_REG_CMP_INTRE 0xb4
+#define CGU_REG_SRBC 0xc4
+#define CGU_REG_DRCG 0xd0
+#define CGU_REG_CPCSR 0xd4
+#define CGU_REG_MACPHYC 0xe0
+
+/* bits within the OPCR register */
+#define OPCR_SPENDN0 BIT(7)
+
+/* bits within the USBPCR register */
+#define USBPCR_SIDDQ BIT(21)
+#define USBPCR_OTG_DISABLE BIT(20)
+
+/* bits within the USBPCR1 register */
+#define USBPCR1_REFCLKDIV_SHIFT 24
+#define USBPCR1_REFCLKDIV_MASK (0x3 << USBPCR1_REFCLKDIV_SHIFT)
+#define USBPCR1_REFCLKDIV_19_2 (0x3 << USBPCR1_REFCLKDIV_SHIFT)
+#define USBPCR1_REFCLKDIV_48 (0x2 << USBPCR1_REFCLKDIV_SHIFT)
+#define USBPCR1_REFCLKDIV_24 (0x1 << USBPCR1_REFCLKDIV_SHIFT)
+#define USBPCR1_REFCLKDIV_12 (0x0 << USBPCR1_REFCLKDIV_SHIFT)
+#define USBPCR1_PDBAR BIT(17)
+#define USBPCR1_XP_SHIFT 12
+#define USBPCR1_XP_MASK (0x3 << USBPCR1_XP_SHIFT)
+#define USBPCR1_XP_DFT (0x1 << USBPCR1_XP_SHIFT)
+#define USBPCR1_SM_SHIFT 6
+#define USBPCR1_SM_MASK (0x7 << USBPCR1_XP_SHIFT)
+#define USBPCR1_SM_RPD (0x1 << USBPCR1_XP_SHIFT)
+
+static struct ingenic_cgu *cgu;
+
+static int jz4775_uhc_phy_enable(struct clk_hw *hw)
+{
+ void __iomem *reg_usbpcr1 = cgu->base + CGU_REG_USBPCR1;
+ u32 usbpcr1;
+
+ usbpcr1 = readl(reg_usbpcr1);
+ usbpcr1 &= ~(USBPCR1_XP_MASK | USBPCR1_SM_MASK);
+ usbpcr1 |= USBPCR1_XP_DFT | USBPCR1_SM_RPD;
+ writel(usbpcr1, reg_usbpcr1);
+
+ return 0;
+}
+
+static void jz4775_uhc_phy_disable(struct clk_hw *hw)
+{
+ void __iomem *reg_usbpcr1 = cgu->base + CGU_REG_USBPCR1;
+
+ writel(readl(reg_usbpcr1) & ~USBPCR1_PDBAR, reg_usbpcr1);
+}
+
+static int jz4775_uhc_phy_is_enabled(struct clk_hw *hw)
+{
+ void __iomem *reg_usbpcr1 = cgu->base + CGU_REG_USBPCR1;
+
+ return !!(readl(reg_usbpcr1) & USBPCR1_PDBAR);
+}
+
+static const struct clk_ops jz4775_uhc_phy_ops = {
+ .enable = jz4775_uhc_phy_enable,
+ .disable = jz4775_uhc_phy_disable,
+ .is_enabled = jz4775_uhc_phy_is_enabled,
+};
+
+static unsigned long jz4775_otg_phy_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ u32 usbpcr1;
+ unsigned refclk_div;
+
+ usbpcr1 = readl(cgu->base + CGU_REG_USBPCR1);
+ refclk_div = usbpcr1 & USBPCR1_REFCLKDIV_MASK;
+
+ switch (refclk_div) {
+ case USBPCR1_REFCLKDIV_12:
+ return 12000000;
+
+ case USBPCR1_REFCLKDIV_24:
+ return 24000000;
+
+ case USBPCR1_REFCLKDIV_48:
+ return 48000000;
+
+ case USBPCR1_REFCLKDIV_19_2:
+ return 19200000;
+ }
+
+ return parent_rate;
+}
+
+static long jz4775_otg_phy_round_rate(struct clk_hw *hw, unsigned long req_rate,
+ unsigned long *parent_rate)
+{
+ if (req_rate < 15600000)
+ return 12000000;
+
+ if (req_rate < 21600000)
+ return 19200000;
+
+ if (req_rate < 36000000)
+ return 24000000;
+
+ return 48000000;
+}
+
+static int jz4775_otg_phy_set_rate(struct clk_hw *hw, unsigned long req_rate,
+ unsigned long parent_rate)
+{
+ unsigned long flags;
+ u32 usbpcr1, div_bits;
+
+ switch (req_rate) {
+ case 12000000:
+ div_bits = USBPCR1_REFCLKDIV_12;
+ break;
+
+ case 19200000:
+ div_bits = USBPCR1_REFCLKDIV_19_2;
+ break;
+
+ case 24000000:
+ div_bits = USBPCR1_REFCLKDIV_24;
+ break;
+
+ case 48000000:
+ div_bits = USBPCR1_REFCLKDIV_48;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave(&cgu->lock, flags);
+
+ usbpcr1 = readl(cgu->base + CGU_REG_USBPCR1);
+ usbpcr1 &= ~USBPCR1_REFCLKDIV_MASK;
+ usbpcr1 |= div_bits;
+ writel(usbpcr1, cgu->base + CGU_REG_USBPCR1);
+
+ spin_unlock_irqrestore(&cgu->lock, flags);
+
+ return 0;
+}
+
+static int jz4775_otg_phy_enable(struct clk_hw *hw)
+{
+ void __iomem *reg_opcr = cgu->base + CGU_REG_OPCR;
+ void __iomem *reg_usbpcr = cgu->base + CGU_REG_USBPCR;
+
+ writel(readl(reg_opcr) | OPCR_SPENDN0, reg_opcr);
+ writel(readl(reg_usbpcr) & ~USBPCR_OTG_DISABLE & ~USBPCR_SIDDQ, reg_usbpcr);
+
+ return 0;
+}
+
+static void jz4775_otg_phy_disable(struct clk_hw *hw)
+{
+ void __iomem *reg_opcr = cgu->base + CGU_REG_OPCR;
+ void __iomem *reg_usbpcr = cgu->base + CGU_REG_USBPCR;
+
+ writel(readl(reg_opcr) & ~OPCR_SPENDN0, reg_opcr);
+ writel(readl(reg_usbpcr) | USBPCR_OTG_DISABLE | USBPCR_SIDDQ, reg_usbpcr);
+}
+
+static int jz4775_otg_phy_is_enabled(struct clk_hw *hw)
+{
+ void __iomem *reg_opcr = cgu->base + CGU_REG_OPCR;
+ void __iomem *reg_usbpcr = cgu->base + CGU_REG_USBPCR;
+
+ return (readl(reg_opcr) & OPCR_SPENDN0) &&
+ !(readl(reg_usbpcr) & USBPCR_SIDDQ) &&
+ !(readl(reg_usbpcr) & USBPCR_OTG_DISABLE);
+}
+
+static const struct clk_ops jz4775_otg_phy_ops = {
+ .recalc_rate = jz4775_otg_phy_recalc_rate,
+ .round_rate = jz4775_otg_phy_round_rate,
+ .set_rate = jz4775_otg_phy_set_rate,
+
+ .enable = jz4775_otg_phy_enable,
+ .disable = jz4775_otg_phy_disable,
+ .is_enabled = jz4775_otg_phy_is_enabled,
+};
+
+static const s8 pll_od_encoding[8] = {
+ 0x0, 0x1, -1, 0x2, -1, -1, -1, 0x3,
+};
+
+static const struct ingenic_cgu_clk_info jz4775_cgu_clocks[] = {
+
+ /* External clocks */
+
+ [JZ4775_CLK_EXCLK] = { "ext", CGU_CLK_EXT },
+ [JZ4775_CLK_RTCLK] = { "rtc", CGU_CLK_EXT },
+
+ /* PLLs */
+
+ [JZ4775_CLK_APLL] = {
+ "apll", CGU_CLK_PLL,
+ .parents = { JZ4775_CLK_EXCLK, -1, -1, -1 },
+ .pll = {
+ .reg = CGU_REG_APLL,
+ .rate_multiplier = 1,
+ .m_shift = 24,
+ .m_bits = 7,
+ .m_offset = 1,
+ .n_shift = 18,
+ .n_bits = 5,
+ .n_offset = 1,
+ .od_shift = 16,
+ .od_bits = 2,
+ .od_max = 8,
+ .od_encoding = pll_od_encoding,
+ .bypass_reg = CGU_REG_APLL,
+ .bypass_bit = 9,
+ .enable_bit = 8,
+ .stable_bit = 10,
+ },
+ },
+
+ [JZ4775_CLK_MPLL] = {
+ "mpll", CGU_CLK_PLL,
+ .parents = { JZ4775_CLK_EXCLK, -1, -1, -1 },
+ .pll = {
+ .reg = CGU_REG_MPLL,
+ .rate_multiplier = 1,
+ .m_shift = 24,
+ .m_bits = 7,
+ .m_offset = 1,
+ .n_shift = 18,
+ .n_bits = 5,
+ .n_offset = 1,
+ .od_shift = 16,
+ .od_bits = 2,
+ .od_max = 8,
+ .od_encoding = pll_od_encoding,
+ .bypass_reg = CGU_REG_MPLL,
+ .bypass_bit = 6,
+ .enable_bit = 7,
+ .stable_bit = 0,
+ },
+ },
+
+ /* Custom (SoC-specific) */
+
+ [JZ4775_CLK_UHCPHY] = {
+ "uhc_phy", CGU_CLK_CUSTOM,
+ .parents = { JZ4775_CLK_UHC, -1, -1, -1 },
+ .custom = { &jz4775_uhc_phy_ops },
+ },
+
+ [JZ4775_CLK_OTGPHY] = {
+ "otg_phy", CGU_CLK_CUSTOM,
+ .parents = { JZ4775_CLK_EXCLK, -1, -1, -1 },
+ .custom = { &jz4775_otg_phy_ops },
+ },
+
+ /* Muxes & dividers */
+
+ [JZ4775_CLK_SCLKA] = {
+ "sclk_a", CGU_CLK_MUX,
+ .parents = { -1, JZ4775_CLK_APLL, JZ4775_CLK_EXCLK, JZ4775_CLK_RTCLK },
+ .mux = { CGU_REG_CPCCR, 30, 2 },
+ },
+
+ [JZ4775_CLK_CPUMUX] = {
+ "cpu_mux", CGU_CLK_MUX,
+ .parents = { -1, JZ4775_CLK_SCLKA, JZ4775_CLK_MPLL, -1 },
+ .mux = { CGU_REG_CPCCR, 28, 2 },
+ },
+
+ [JZ4775_CLK_CPU] = {
+ "cpu", CGU_CLK_DIV,
+ .parents = { JZ4775_CLK_CPUMUX },
+ .div = { CGU_REG_CPCCR, 0, 1, 4, 22, -1, -1 },
+ },
+
+ [JZ4775_CLK_L2CACHE] = {
+ "l2cache", CGU_CLK_DIV,
+ .parents = { JZ4775_CLK_CPUMUX },
+ .div = { CGU_REG_CPCCR, 4, 1, 4, 22, -1, -1 },
+ },
+
+ [JZ4775_CLK_AHB0] = {
+ "ahb0", CGU_CLK_MUX | CGU_CLK_DIV,
+ .parents = { -1, JZ4775_CLK_SCLKA, JZ4775_CLK_MPLL, -1 },
+ .mux = { CGU_REG_CPCCR, 26, 2 },
+ .div = { CGU_REG_CPCCR, 8, 1, 4, 21, -1, -1 },
+ },
+
+ [JZ4775_CLK_AHB2PMUX] = {
+ "ahb2_apb_mux", CGU_CLK_MUX,
+ .parents = { -1, JZ4775_CLK_SCLKA, JZ4775_CLK_MPLL, JZ4775_CLK_RTCLK },
+ .mux = { CGU_REG_CPCCR, 24, 2 },
+ },
+
+ [JZ4775_CLK_AHB2] = {
+ "ahb2", CGU_CLK_DIV,
+ .parents = { JZ4775_CLK_AHB2PMUX },
+ .div = { CGU_REG_CPCCR, 12, 1, 4, 20, -1, -1 },
+ },
+
+ [JZ4775_CLK_PCLK] = {
+ "pclk", CGU_CLK_DIV,
+ .parents = { JZ4775_CLK_AHB2PMUX },
+ .div = { CGU_REG_CPCCR, 16, 1, 4, 20, -1, -1 },
+ },
+
+ [JZ4775_CLK_DDR] = {
+ "ddr", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { -1, JZ4775_CLK_SCLKA, JZ4775_CLK_MPLL, -1 },
+ .mux = { CGU_REG_DDRCDR, 30, 2 },
+ .div = { CGU_REG_DDRCDR, 0, 1, 4, 29, 28, 27 },
+ .gate = { CGU_REG_CLKGR, 31 },
+ },
+
+ [JZ4775_CLK_VPU] = {
+ "vpu", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_SCLKA, JZ4775_CLK_MPLL },
+ .mux = { CGU_REG_VPUCDR, 31, 1 },
+ .div = { CGU_REG_VPUCDR, 0, 1, 4, 29, 28, 27 },
+ .gate = { CGU_REG_CLKGR, 19 },
+ },
+
+ [JZ4775_CLK_OTG] = {
+ "otg", CGU_CLK_DIV | CGU_CLK_GATE | CGU_CLK_MUX,
+ .parents = { JZ4775_CLK_EXCLK, -1, JZ4775_CLK_SCLKA, JZ4775_CLK_MPLL },
+ .mux = { CGU_REG_USBCDR, 30, 2 },
+ .div = { CGU_REG_USBCDR, 0, 1, 8, 29, 28, 27 },
+ .gate = { CGU_REG_CLKGR, 2 },
+ },
+
+ [JZ4775_CLK_EXCLK_DIV2] = {
+ "exclk_div2", CGU_CLK_FIXDIV,
+ .parents = { JZ4775_CLK_EXCLK },
+ .fixdiv = { 2 },
+ },
+
+ [JZ4775_CLK_I2S] = {
+ "i2s", CGU_CLK_MUX | CGU_CLK_DIV,
+ .parents = { JZ4775_CLK_EXCLK_DIV2, -1, JZ4775_CLK_SCLKA, JZ4775_CLK_MPLL },
+ .mux = { CGU_REG_I2SCDR, 30, 2 },
+ .div = { CGU_REG_I2SCDR, 0, 1, 8, 29, 28, 27 },
+ },
+
+ [JZ4775_CLK_LCD] = {
+ "lcd", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_SCLKA, JZ4775_CLK_MPLL },
+ .mux = { CGU_REG_LPCDR, 31, 1 },
+ .div = { CGU_REG_LPCDR, 0, 1, 8, 28, 27, 26 },
+ .gate = { CGU_REG_CLKGR, 25 },
+ },
+
+ [JZ4775_CLK_MSCMUX] = {
+ "msc_mux", CGU_CLK_MUX,
+ .parents = { -1, JZ4775_CLK_SCLKA, JZ4775_CLK_MPLL, -1 },
+ .mux = { CGU_REG_MSC0CDR, 30, 2 },
+ },
+
+ [JZ4775_CLK_MSC0] = {
+ "msc0", CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_MSCMUX },
+ .div = { CGU_REG_MSC0CDR, 0, 2, 8, 29, 28, 27 },
+ .gate = { CGU_REG_CLKGR, 3 },
+ },
+
+ [JZ4775_CLK_MSC1] = {
+ "msc1", CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_MSCMUX },
+ .div = { CGU_REG_MSC1CDR, 0, 2, 8, 29, 28, 27 },
+ .gate = { CGU_REG_CLKGR, 11 },
+ },
+
+ [JZ4775_CLK_MSC2] = {
+ "msc2", CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_MSCMUX },
+ .div = { CGU_REG_MSC2CDR, 0, 2, 8, 29, 28, 27 },
+ .gate = { CGU_REG_CLKGR, 12 },
+ },
+
+ [JZ4775_CLK_UHC] = {
+ "uhc", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_SCLKA, JZ4775_CLK_MPLL, JZ4775_CLK_OTGPHY, -1 },
+ .mux = { CGU_REG_UHCCDR, 30, 2 },
+ .div = { CGU_REG_UHCCDR, 0, 1, 8, 29, 28, 27 },
+ .gate = { CGU_REG_CLKGR, 22 },
+ },
+
+ [JZ4775_CLK_SSI] = {
+ "ssi", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_EXCLK, -1, JZ4775_CLK_SCLKA, JZ4775_CLK_MPLL },
+ .mux = { CGU_REG_SSICDR, 30, 2 },
+ .div = { CGU_REG_SSICDR, 0, 1, 8, 29, 28, 27 },
+ .gate = { CGU_REG_CLKGR, 4 },
+ },
+
+ [JZ4775_CLK_CIM0] = {
+ "cim0", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_SCLKA, JZ4775_CLK_MPLL },
+ .mux = { CGU_REG_CIM0CDR, 31, 1 },
+ .div = { CGU_REG_CIM0CDR, 0, 1, 8, 30, 29, 28 },
+ .gate = { CGU_REG_CLKGR, 23 },
+ },
+
+ [JZ4775_CLK_CIM1] = {
+ "cim1", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_SCLKA, JZ4775_CLK_MPLL },
+ .mux = { CGU_REG_CIM1CDR, 31, 1 },
+ .div = { CGU_REG_CIM1CDR, 0, 1, 8, 30, 29, 28 },
+ .gate = { CGU_REG_CLKGR, 24 },
+ },
+
+ [JZ4775_CLK_PCM] = {
+ "pcm", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_EXCLK_DIV2, -1, JZ4775_CLK_SCLKA, JZ4775_CLK_MPLL },
+ .mux = { CGU_REG_PCMCDR, 30, 2 },
+ .div = { CGU_REG_PCMCDR, 0, 1, 8, 28, 27, 26 },
+ .gate = { CGU_REG_CLKGR, 13 },
+ },
+
+ [JZ4775_CLK_BCH] = {
+ "bch", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE,
+ .parents = { -1, JZ4775_CLK_SCLKA, JZ4775_CLK_MPLL, -1 },
+ .mux = { CGU_REG_BCHCDR, 30, 2 },
+ .div = { CGU_REG_BCHCDR, 0, 1, 4, 29, 28, 27 },
+ .gate = { CGU_REG_CLKGR, 1 },
+ },
+
+ [JZ4775_CLK_EXCLK_DIV512] = {
+ "exclk_div512", CGU_CLK_FIXDIV,
+ .parents = { JZ4775_CLK_EXCLK },
+ .fixdiv = { 512 },
+ },
+
+ [JZ4775_CLK_RTC] = {
+ "rtc_ercs", CGU_CLK_MUX | CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_EXCLK_DIV512, JZ4775_CLK_RTCLK },
+ .mux = { CGU_REG_OPCR, 2, 1},
+ },
+
+ /* Gate-only clocks */
+
+ [JZ4775_CLK_NEMC] = {
+ "nemc", CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_AHB2 },
+ .gate = { CGU_REG_CLKGR, 0 },
+ },
+
+ [JZ4775_CLK_I2C0] = {
+ "i2c0", CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_PCLK },
+ .gate = { CGU_REG_CLKGR, 5 },
+ },
+
+ [JZ4775_CLK_I2C1] = {
+ "i2c1", CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_PCLK },
+ .gate = { CGU_REG_CLKGR, 6 },
+ },
+
+ [JZ4775_CLK_I2C2] = {
+ "i2c2", CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_PCLK },
+ .gate = { CGU_REG_CLKGR, 7 },
+ },
+
+ [JZ4775_CLK_SADC] = {
+ "sadc", CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_EXCLK },
+ .gate = { CGU_REG_CLKGR, 14 },
+ },
+
+ [JZ4775_CLK_UART0] = {
+ "uart0", CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_EXCLK },
+ .gate = { CGU_REG_CLKGR, 15 },
+ },
+
+ [JZ4775_CLK_UART1] = {
+ "uart1", CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_EXCLK },
+ .gate = { CGU_REG_CLKGR, 16 },
+ },
+
+ [JZ4775_CLK_UART2] = {
+ "uart2", CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_EXCLK },
+ .gate = { CGU_REG_CLKGR, 17 },
+ },
+
+ [JZ4775_CLK_UART3] = {
+ "uart3", CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_EXCLK },
+ .gate = { CGU_REG_CLKGR, 18 },
+ },
+
+ [JZ4775_CLK_PDMA] = {
+ "pdma", CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_EXCLK },
+ .gate = { CGU_REG_CLKGR, 20 },
+ },
+
+ [JZ4775_CLK_MAC] = {
+ "mac", CGU_CLK_GATE,
+ .parents = { JZ4775_CLK_AHB2 },
+ .gate = { CGU_REG_CLKGR, 21 },
+ },
+};
+
+static void __init jz4775_cgu_init(struct device_node *np)
+{
+ int retval;
+
+ cgu = ingenic_cgu_new(jz4775_cgu_clocks,
+ ARRAY_SIZE(jz4775_cgu_clocks), np);
+ if (!cgu) {
+ pr_err("%s: failed to initialise CGU\n", __func__);
+ return;
+ }
+
+ retval = ingenic_cgu_register_clocks(cgu);
+ if (retval) {
+ pr_err("%s: failed to register CGU Clocks\n", __func__);
+ return;
+ }
+
+ ingenic_cgu_register_syscore_ops(cgu);
+}
+
+/*
+ * CGU has some children devices, this is useful for probing children devices
+ * in the case where the device node is compatible with "simple-mfd".
+ */
+CLK_OF_DECLARE_DRIVER(jz4775_cgu, "ingenic,jz4775-cgu", jz4775_cgu_init);
--
2.7.4
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