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Message-Id: <20240110-clk-th1520-v1-3-8b0682567984@tenstorrent.com>
Date: Wed, 10 Jan 2024 08:35:17 -0800
From: Drew Fustini <dfustini@...storrent.com>
To: Jisheng Zhang <jszhang@...nel.org>, Guo Ren <guoren@...nel.org>,
Fu Wei <wefu@...hat.com>, Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>, Yangtao Li <frank.li@...o.com>
Cc: linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
Emil Renner Berthing <emil.renner.berthing@...onical.com>,
Han Gao <gaohan@...as.ac.cn>, Xi Ruoyao <xry111@...111.site>,
Robert Nelson <robertcnelson@...gleboard.org>,
Jason Kridner <jkridner@...gleboard.org>,
Drew Fustini <dfustini@...storrent.com>,
Drew Fustini <drew@...storrent.org>
Subject: [PATCH RFC 3/3] clk: thead: add support for T-HEAD TH1520 AP
clocks
From: Jisheng Zhang <jszhang@...nel.org>
Add support for the AP sub system clock controller in the T-HEAD TH1520.
This include CPU, DPU, GMAC and TEE PLLs.
Link: https://openbeagle.org/beaglev-ahead/beaglev-ahead/-/blob/main/docs/TH1520%20System%20User%20Manual.pdf
Co-developed-by: Yangtao Li <frank.li@...o.com>
Signed-off-by: Yangtao Li <frank.li@...o.com>
Signed-off-by: Jisheng Zhang <jszhang@...nel.org>
[rebased on linux-next-20240110]
[fixed checkpatch warnings]
[corrected npu_clk enable bit and c910_i0_clk reg]
[revised commit description]
Signed-off-by: Drew Fustini <drew@...storrent.org>
---
MAINTAINERS | 1 +
drivers/clk/Kconfig | 1 +
drivers/clk/Makefile | 1 +
drivers/clk/thead/Kconfig | 12 +
drivers/clk/thead/Makefile | 2 +
drivers/clk/thead/clk-th1520-ap.c | 1018 +++++++++++++++++++++++++++++++++++++
6 files changed, 1035 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index dd2398512fc0..19efec5cd0b6 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18858,6 +18858,7 @@ L: linux-riscv@...ts.infradead.org
S: Maintained
F: Documentation/devicetree/bindings/clock/thead,th1520-clk-ap.yaml
F: arch/riscv/boot/dts/thead/
+F: drivers/clk/thead/clk-th1520-ap.c
F: include/dt-bindings/clock/thead,th1520-clk.h
RNBD BLOCK DRIVERS
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 50af5fc7f570..c9057e41df34 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -494,6 +494,7 @@ source "drivers/clk/starfive/Kconfig"
source "drivers/clk/sunxi/Kconfig"
source "drivers/clk/sunxi-ng/Kconfig"
source "drivers/clk/tegra/Kconfig"
+source "drivers/clk/thead/Kconfig"
source "drivers/clk/stm32/Kconfig"
source "drivers/clk/ti/Kconfig"
source "drivers/clk/uniphier/Kconfig"
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index 14fa8d4ecc1f..2eafc268f498 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -126,6 +126,7 @@ obj-y += starfive/
obj-$(CONFIG_ARCH_SUNXI) += sunxi/
obj-y += sunxi-ng/
obj-$(CONFIG_ARCH_TEGRA) += tegra/
+obj-$(CONFIG_ARCH_THEAD) += thead/
obj-y += ti/
obj-$(CONFIG_CLK_UNIPHIER) += uniphier/
obj-$(CONFIG_ARCH_U8500) += ux500/
diff --git a/drivers/clk/thead/Kconfig b/drivers/clk/thead/Kconfig
new file mode 100644
index 000000000000..1710d50bf9d4
--- /dev/null
+++ b/drivers/clk/thead/Kconfig
@@ -0,0 +1,12 @@
+#SPDX-License-Identifier: GPL-2.0
+
+config CLK_THEAD_TH1520_AP
+ bool "T-HEAD TH1520 AP clock support"
+ depends on ARCH_THEAD || COMPILE_TEST
+ default ARCH_THEAD
+ select REGMAP_MMIO
+ help
+ Say yes here to support the AP sub system clock controller
+ on the T-HEAD TH1520 SoC. This includes configuration of
+ both CPU PLLs, both DPU PLLs as well as the GMAC, VIDEO,
+ and TEE PLLs.
diff --git a/drivers/clk/thead/Makefile b/drivers/clk/thead/Makefile
new file mode 100644
index 000000000000..7ee0bec1f251
--- /dev/null
+++ b/drivers/clk/thead/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_CLK_THEAD_TH1520_AP) += clk-th1520-ap.o
diff --git a/drivers/clk/thead/clk-th1520-ap.c b/drivers/clk/thead/clk-th1520-ap.c
new file mode 100644
index 000000000000..18bb6200eb82
--- /dev/null
+++ b/drivers/clk/thead/clk-th1520-ap.c
@@ -0,0 +1,1018 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2023 Jisheng Zhang <jszhang@...nel.org>
+ * Copyright (C) 2023 Vivo Communication Technology Co. Ltd.
+ * Authors: Yangtao Li <frank.li@...o.com>
+ */
+
+#include <dt-bindings/clock/thead,th1520-clk.h>
+#include <linux/clk-provider.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+struct ccu_internal {
+ u8 shift;
+ u8 width;
+};
+
+struct ccu_div_internal {
+ u8 shift;
+ u8 width;
+ u32 flags;
+};
+
+struct ccu_common {
+ struct regmap *map;
+ u16 reg;
+ struct clk_hw hw;
+};
+
+struct ccu_mux {
+ struct ccu_internal mux;
+ struct ccu_common common;
+};
+
+struct ccu_gate {
+ u32 enable;
+ struct ccu_common common;
+};
+
+struct ccu_div {
+ u32 enable;
+ struct ccu_div_internal div;
+ struct ccu_internal mux;
+ struct ccu_common common;
+};
+
+/*
+ * struct ccu_mdiv - Definition of an M-D-I-V clock
+ *
+ * Clocks based on the formula (parent * M) / (D * I * V)
+ */
+struct ccu_mdiv {
+ struct ccu_internal m;
+ struct ccu_internal d;
+ struct ccu_internal i;
+ struct ccu_internal v;
+ struct ccu_common common;
+};
+
+#define TH_CCU_ARG(_shift, _width) \
+ { \
+ .shift = _shift, \
+ .width = _width, \
+ }
+
+#define TH_CCU_DIV_FLAGS(_shift, _width, _flags) \
+ { \
+ .shift = _shift, \
+ .width = _width, \
+ .flags = _flags, \
+ }
+
+#define CCU_GATE(_struct, _name, _parent, _reg, _gate, _flags) \
+ struct ccu_gate _struct = { \
+ .enable = _gate, \
+ .common = { \
+ .reg = _reg, \
+ .hw.init = CLK_HW_INIT(_name, \
+ _parent, \
+ &ccu_gate_ops, \
+ _flags), \
+ } \
+ }
+
+static inline struct ccu_common *hw_to_ccu_common(struct clk_hw *hw)
+{
+ return container_of(hw, struct ccu_common, hw);
+}
+
+static inline struct ccu_mux *hw_to_ccu_mux(struct clk_hw *hw)
+{
+ struct ccu_common *common = hw_to_ccu_common(hw);
+
+ return container_of(common, struct ccu_mux, common);
+}
+
+static inline struct ccu_mdiv *hw_to_ccu_mdiv(struct clk_hw *hw)
+{
+ struct ccu_common *common = hw_to_ccu_common(hw);
+
+ return container_of(common, struct ccu_mdiv, common);
+}
+
+static inline struct ccu_div *hw_to_ccu_div(struct clk_hw *hw)
+{
+ struct ccu_common *common = hw_to_ccu_common(hw);
+
+ return container_of(common, struct ccu_div, common);
+}
+
+static inline struct ccu_gate *hw_to_ccu_gate(struct clk_hw *hw)
+{
+ struct ccu_common *common = hw_to_ccu_common(hw);
+
+ return container_of(common, struct ccu_gate, common);
+}
+
+static u8 ccu_get_parent_helper(struct ccu_common *common,
+ struct ccu_internal *mux)
+{
+ unsigned int val;
+ u8 parent;
+
+ regmap_read(common->map, common->reg, &val);
+ parent = val >> mux->shift;
+ parent &= GENMASK(mux->width - 1, 0);
+
+ return parent;
+}
+
+static int ccu_set_parent_helper(struct ccu_common *common,
+ struct ccu_internal *mux,
+ u8 index)
+{
+ return regmap_update_bits(common->map, common->reg,
+ GENMASK(mux->width - 1, 0) << mux->shift,
+ index << mux->shift);
+}
+
+static u8 ccu_mux_get_parent(struct clk_hw *hw)
+{
+ struct ccu_mux *cm = hw_to_ccu_mux(hw);
+
+ return ccu_get_parent_helper(&cm->common, &cm->mux);
+}
+
+static int ccu_mux_set_parent(struct clk_hw *hw, u8 index)
+{
+ struct ccu_mux *cm = hw_to_ccu_mux(hw);
+
+ return ccu_set_parent_helper(&cm->common, &cm->mux, index);
+}
+
+static const struct clk_ops ccu_mux_ops = {
+ .get_parent = ccu_mux_get_parent,
+ .set_parent = ccu_mux_set_parent,
+ .determine_rate = __clk_mux_determine_rate,
+};
+
+void ccu_disable_helper(struct ccu_common *common, u32 gate)
+{
+ if (!gate)
+ return;
+
+ regmap_update_bits(common->map, common->reg,
+ gate, ~gate);
+}
+
+int ccu_enable_helper(struct ccu_common *common, u32 gate)
+{
+ if (!gate)
+ return 0;
+
+ return regmap_update_bits(common->map, common->reg,
+ gate, gate);
+}
+
+static int ccu_is_enabled_helper(struct ccu_common *common, u32 gate)
+{
+ unsigned int val;
+
+ if (!gate)
+ return true;
+
+ regmap_read(common->map, common->reg, &val);
+ return val & gate;
+}
+
+static int ccu_gate_is_enabled(struct clk_hw *hw)
+{
+ struct ccu_gate *cg = hw_to_ccu_gate(hw);
+
+ return ccu_is_enabled_helper(&cg->common, cg->enable);
+}
+
+static void ccu_gate_disable(struct clk_hw *hw)
+{
+ struct ccu_gate *cg = hw_to_ccu_gate(hw);
+
+ ccu_disable_helper(&cg->common, cg->enable);
+}
+
+static int ccu_gate_enable(struct clk_hw *hw)
+{
+ struct ccu_gate *cg = hw_to_ccu_gate(hw);
+
+ return ccu_enable_helper(&cg->common, cg->enable);
+}
+
+static const struct clk_ops ccu_gate_ops = {
+ .disable = ccu_gate_disable,
+ .enable = ccu_gate_enable,
+ .is_enabled = ccu_gate_is_enabled,
+};
+
+static unsigned long ccu_div_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct ccu_div *cd = hw_to_ccu_div(hw);
+ unsigned int val;
+
+ regmap_read(cd->common.map, cd->common.reg, &val);
+ val = val >> cd->div.shift;
+ val &= GENMASK(cd->div.width - 1, 0);
+
+ val = divider_recalc_rate(hw, parent_rate, val, NULL,
+ cd->div.flags, cd->div.width);
+
+ return val;
+}
+
+static u8 ccu_div_get_parent(struct clk_hw *hw)
+{
+ struct ccu_div *cd = hw_to_ccu_div(hw);
+
+ return ccu_get_parent_helper(&cd->common, &cd->mux);
+}
+
+static int ccu_div_set_parent(struct clk_hw *hw, u8 index)
+{
+ struct ccu_div *cd = hw_to_ccu_div(hw);
+
+ return ccu_set_parent_helper(&cd->common, &cd->mux, index);
+}
+
+static void ccu_div_disable(struct clk_hw *hw)
+{
+ struct ccu_div *cd = hw_to_ccu_div(hw);
+
+ ccu_disable_helper(&cd->common, cd->enable);
+}
+
+static int ccu_div_enable(struct clk_hw *hw)
+{
+ struct ccu_div *cd = hw_to_ccu_div(hw);
+
+ return ccu_enable_helper(&cd->common, cd->enable);
+}
+
+static int ccu_div_is_enabled(struct clk_hw *hw)
+{
+ struct ccu_div *cd = hw_to_ccu_div(hw);
+
+ return ccu_is_enabled_helper(&cd->common, cd->enable);
+}
+
+static const struct clk_ops ccu_div_ops = {
+ .disable = ccu_div_disable,
+ .enable = ccu_div_enable,
+ .is_enabled = ccu_div_is_enabled,
+ .get_parent = ccu_div_get_parent,
+ .set_parent = ccu_div_set_parent,
+ .recalc_rate = ccu_div_recalc_rate,
+ .determine_rate = clk_hw_determine_rate_no_reparent,
+};
+
+static unsigned long ccu_mdiv_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct ccu_mdiv *mdiv = hw_to_ccu_mdiv(hw);
+ unsigned long div, rate = parent_rate;
+ unsigned int m, d, i, v, val;
+
+ regmap_read(mdiv->common.map, mdiv->common.reg, &val);
+
+ m = val >> mdiv->m.shift;
+ m &= GENMASK(mdiv->m.width - 1, 0);
+
+ d = val >> mdiv->d.shift;
+ d &= GENMASK(mdiv->d.width - 1, 0);
+
+ i = val >> mdiv->i.shift;
+ i &= GENMASK(mdiv->i.width - 1, 0);
+
+ v = val >> mdiv->v.shift;
+ v &= GENMASK(mdiv->v.width - 1, 0);
+
+ rate = parent_rate * m;
+ div = d * i * v;
+ do_div(rate, div);
+
+ return rate;
+}
+
+static const struct clk_ops clk_mdiv_ops = {
+ .recalc_rate = ccu_mdiv_recalc_rate,
+};
+
+static struct ccu_mdiv cpu_pll0_clk = {
+ .m = TH_CCU_ARG(8, 12),
+ .d = TH_CCU_ARG(24, 3),
+ .i = TH_CCU_ARG(20, 3),
+ .v = TH_CCU_ARG(0, 6),
+ .common = {
+ .reg = 0x000,
+ .hw.init = CLK_HW_INIT("cpu-pll0", "osc_24m",
+ &clk_mdiv_ops,
+ 0),
+ },
+};
+
+static struct ccu_mdiv cpu_pll1_clk = {
+ .m = TH_CCU_ARG(8, 12),
+ .d = TH_CCU_ARG(24, 3),
+ .i = TH_CCU_ARG(20, 3),
+ .v = TH_CCU_ARG(0, 6),
+ .common = {
+ .reg = 0x010,
+ .hw.init = CLK_HW_INIT("cpu-pll1", "osc_24m",
+ &clk_mdiv_ops,
+ 0),
+ },
+};
+
+static struct ccu_mdiv gmac_pll_clk = {
+ .m = TH_CCU_ARG(8, 12),
+ .d = TH_CCU_ARG(24, 3),
+ .i = TH_CCU_ARG(20, 3),
+ .v = TH_CCU_ARG(0, 6),
+ .common = {
+ .reg = 0x020,
+ .hw.init = CLK_HW_INIT("gmac-pll", "osc_24m",
+ &clk_mdiv_ops,
+ 0),
+ },
+};
+
+static struct ccu_mdiv video_pll_clk = {
+ .m = TH_CCU_ARG(8, 12),
+ .d = TH_CCU_ARG(24, 3),
+ .i = TH_CCU_ARG(20, 3),
+ .v = TH_CCU_ARG(0, 6),
+ .common = {
+ .reg = 0x030,
+ .hw.init = CLK_HW_INIT("video-pll", "osc_24m",
+ &clk_mdiv_ops,
+ 0),
+ },
+};
+
+static struct ccu_mdiv dpu0_pll_clk = {
+ .m = TH_CCU_ARG(8, 12),
+ .d = TH_CCU_ARG(24, 3),
+ .i = TH_CCU_ARG(20, 3),
+ .v = TH_CCU_ARG(0, 6),
+ .common = {
+ .reg = 0x040,
+ .hw.init = CLK_HW_INIT("dpu0-pll", "osc_24m",
+ &clk_mdiv_ops,
+ 0),
+ },
+};
+
+static struct ccu_mdiv dpu1_pll_clk = {
+ .m = TH_CCU_ARG(8, 12),
+ .d = TH_CCU_ARG(24, 3),
+ .i = TH_CCU_ARG(20, 3),
+ .v = TH_CCU_ARG(0, 6),
+ .common = {
+ .reg = 0x050,
+ .hw.init = CLK_HW_INIT("dpu1-pll", "osc_24m",
+ &clk_mdiv_ops,
+ 0),
+ },
+};
+
+static struct ccu_mdiv tee_pll_clk = {
+ .m = TH_CCU_ARG(8, 12),
+ .d = TH_CCU_ARG(24, 3),
+ .i = TH_CCU_ARG(20, 3),
+ .v = TH_CCU_ARG(0, 6),
+ .common = {
+ .reg = 0x060,
+ .hw.init = CLK_HW_INIT("tee-pll", "osc_24m",
+ &clk_mdiv_ops,
+ 0),
+ },
+};
+
+static const char * const c910_i0_parents[] = { "cpu-pll0", "osc_24m" };
+struct ccu_mux c910_i0_clk = {
+ .mux = TH_CCU_ARG(1, 1),
+ .common = {
+ .reg = 0x100,
+ .hw.init = CLK_HW_INIT_PARENTS("c910-i0",
+ c910_i0_parents,
+ &ccu_mux_ops,
+ 0),
+ }
+};
+
+static const char * const c910_parents[] = { "c910-i0", "cpu-pll1" };
+struct ccu_mux c910_clk = {
+ .mux = TH_CCU_ARG(0, 1),
+ .common = {
+ .reg = 0x100,
+ .hw.init = CLK_HW_INIT_PARENTS("c910",
+ c910_parents,
+ &ccu_mux_ops,
+ 0),
+ }
+};
+
+static CCU_GATE(brom_clk, "brom", "ahb2-cpusys-hclk",
+ 0x100, BIT(4), 0);
+
+static CCU_GATE(bmu_clk, "bmu", "axi4-cpusys2-aclk",
+ 0x100, BIT(5), 0);
+
+static const char * const ahb2_cpusys_parents[] = { "gmac-pll", "osc_24m" };
+static struct ccu_div ahb2_cpusys_hclk = {
+ .div = TH_CCU_DIV_FLAGS(0, 3, CLK_DIVIDER_ONE_BASED),
+ .mux = TH_CCU_ARG(5, 1),
+ .common = {
+ .reg = 0x120,
+ .hw.init = CLK_HW_INIT_PARENTS("ahb2-cpusys-hclk",
+ ahb2_cpusys_parents,
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static struct ccu_div apb3_cpusys_pclk = {
+ .div = TH_CCU_ARG(0, 3),
+ .common = {
+ .reg = 0x130,
+ .hw.init = CLK_HW_INIT("apb3-cpusys-pclk", "ahb2-cpusys-hclk",
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static struct ccu_div axi4_cpusys2_aclk = {
+ .div = TH_CCU_DIV_FLAGS(0, 3, CLK_DIVIDER_ONE_BASED),
+ .common = {
+ .reg = 0x134,
+ .hw.init = CLK_HW_INIT("axi4-cpusys2-aclk", "gmac-pll",
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static CCU_GATE(aon2cpu_a2x_clk, "aon2cpu-a2x", "axi4-cpusys2-aclk",
+ 0x134, BIT(8), 0);
+
+static CCU_GATE(x2x_cpusys_clk, "x2x-cpusys", "axi4-cpusys2-aclk",
+ 0x134, BIT(7), 0);
+
+static const char * const axi_parents[] = { "video-pll", "osc_24m" };
+static struct ccu_div axi_aclk = {
+ .div = TH_CCU_DIV_FLAGS(0, 4, CLK_DIVIDER_ONE_BASED),
+ .mux = TH_CCU_ARG(5, 1),
+ .common = {
+ .reg = 0x138,
+ .hw.init = CLK_HW_INIT_PARENTS("axi-aclk",
+ axi_parents,
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static CCU_GATE(cpu2aon_x2h_clk, "cpu2aon-x2h", "axi-aclk",
+ 0x138, BIT(8), 0);
+
+static const char * const perisys_ahb_hclk_parents[] = { "gmac-pll", "osc_24m" };
+static struct ccu_div perisys_ahb_hclk = {
+ .enable = BIT(6),
+ .div = TH_CCU_DIV_FLAGS(0, 4, CLK_DIVIDER_ONE_BASED),
+ .mux = TH_CCU_ARG(5, 1),
+ .common = {
+ .reg = 0x140,
+ .hw.init = CLK_HW_INIT_PARENTS("perisys-ahb-hclk",
+ perisys_ahb_hclk_parents,
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static CCU_GATE(cpu2peri_x2h_clk, "cpu2peri-x2h", "axi4-cpusys2-aclk",
+ 0x140, BIT(9), 0);
+
+static struct ccu_div perisys_apb_pclk = {
+ .div = TH_CCU_ARG(0, 3),
+ .common = {
+ .reg = 0x150,
+ .hw.init = CLK_HW_INIT("perisys-apb-pclk", "perisys-ahb-hclk",
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static struct ccu_div peri2sys_apb_pclk = {
+ .div = TH_CCU_DIV_FLAGS(4, 3, CLK_DIVIDER_ONE_BASED),
+ .common = {
+ .reg = 0x150,
+ .hw.init = CLK_HW_INIT("peri2sys-apb-pclk",
+ "gmac-pll",
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static CCU_GATE(perisys_apb1_hclk, "perisys-apb1-hclk", "perisys-ahb-hclk",
+ 0x150, BIT(9), 0);
+
+static CCU_GATE(perisys_apb2_hclk, "perisys-apb2-hclk", "perisys-ahb-hclk",
+ 0x150, BIT(10), 0);
+
+static CCU_GATE(perisys_apb3_hclk, "perisys-apb3-hclk", "perisys-ahb-hclk",
+ 0x150, BIT(11), 0);
+
+static CCU_GATE(perisys_apb4_hclk, "perisys-apb4-hclk", "perisys-ahb-hclk",
+ 0x150, BIT(12), 0);
+
+static CLK_FIXED_FACTOR_FW_NAME(osc12m_clk, "osc_12m", "osc_24m", 2, 1, 0);
+
+static const char * const out_parents[] = { "osc_24m", "osc_12m" };
+
+static struct ccu_div out1_clk = {
+ .enable = BIT(5),
+ .div = TH_CCU_DIV_FLAGS(0, 3, CLK_DIVIDER_ONE_BASED),
+ .mux = TH_CCU_ARG(4, 1),
+ .common = {
+ .reg = 0x1b4,
+ .hw.init = CLK_HW_INIT_PARENTS("out1",
+ out_parents,
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static struct ccu_div out2_clk = {
+ .enable = BIT(5),
+ .div = TH_CCU_DIV_FLAGS(0, 3, CLK_DIVIDER_ONE_BASED),
+ .mux = TH_CCU_ARG(4, 1),
+ .common = {
+ .reg = 0x1b8,
+ .hw.init = CLK_HW_INIT_PARENTS("out2",
+ out_parents,
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static struct ccu_div out3_clk = {
+ .enable = BIT(5),
+ .div = TH_CCU_DIV_FLAGS(0, 3, CLK_DIVIDER_ONE_BASED),
+ .mux = TH_CCU_ARG(4, 1),
+ .common = {
+ .reg = 0x1bc,
+ .hw.init = CLK_HW_INIT_PARENTS("out3",
+ out_parents,
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static struct ccu_div out4_clk = {
+ .enable = BIT(5),
+ .div = TH_CCU_DIV_FLAGS(0, 3, CLK_DIVIDER_ONE_BASED),
+ .mux = TH_CCU_ARG(4, 1),
+ .common = {
+ .reg = 0x1c0,
+ .hw.init = CLK_HW_INIT_PARENTS("out4",
+ out_parents,
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static const char * const apb_parents[] = { "gmac-pll", "osc_24m" };
+static struct ccu_div apb_pclk = {
+ .enable = BIT(5),
+ .div = TH_CCU_DIV_FLAGS(0, 4, CLK_DIVIDER_ONE_BASED),
+ .mux = TH_CCU_ARG(7, 1),
+ .common = {
+ .reg = 0x1c4,
+ .hw.init = CLK_HW_INIT_PARENTS("apb-pclk",
+ apb_parents,
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static const char * const npu_parents[] = { "gmac-pll", "video-pll" };
+static struct ccu_div npu_clk = {
+ .enable = BIT(4),
+ .div = TH_CCU_DIV_FLAGS(0, 3, CLK_DIVIDER_ONE_BASED),
+ .mux = TH_CCU_ARG(6, 1),
+ .common = {
+ .reg = 0x1c8,
+ .hw.init = CLK_HW_INIT_PARENTS("npu",
+ npu_parents,
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static CCU_GATE(npu_axi_clk, "npu-axi", "npu-ahb",
+ 0x1c8, BIT(5), 0);
+
+static struct ccu_div vi_clk = {
+ .div = TH_CCU_DIV_FLAGS(16, 4, CLK_DIVIDER_ONE_BASED),
+ .common = {
+ .reg = 0x1d0,
+ .hw.init = CLK_HW_INIT("vi",
+ "video-pll",
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static struct ccu_div vi_ahb_clk = {
+ .div = TH_CCU_DIV_FLAGS(0, 4, CLK_DIVIDER_ONE_BASED),
+ .common = {
+ .reg = 0x1d0,
+ .hw.init = CLK_HW_INIT("vi-ahb",
+ "video-pll",
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static struct ccu_div vo_axi_clk = {
+ .enable = BIT(5),
+ .div = TH_CCU_DIV_FLAGS(0, 4, CLK_DIVIDER_ONE_BASED),
+ .common = {
+ .reg = 0x1dc,
+ .hw.init = CLK_HW_INIT("vo-axi",
+ "video-pll",
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static struct ccu_div vp_apb_clk = {
+ .div = TH_CCU_DIV_FLAGS(0, 3, CLK_DIVIDER_ONE_BASED),
+ .common = {
+ .reg = 0x1e0,
+ .hw.init = CLK_HW_INIT("vp-apb",
+ "gmac-pll",
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static struct ccu_div vp_axi_clk = {
+ .enable = BIT(15),
+ .div = TH_CCU_DIV_FLAGS(8, 4, CLK_DIVIDER_ONE_BASED),
+ .common = {
+ .reg = 0x1e0,
+ .hw.init = CLK_HW_INIT("vp-axi",
+ "video-pll",
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static CCU_GATE(cpu2vp_clk, "cpu2vp", "axi-aclk",
+ 0x1e0, BIT(13), 0);
+
+static struct ccu_div venc_clk = {
+ .enable = BIT(5),
+ .div = TH_CCU_DIV_FLAGS(0, 3, CLK_DIVIDER_ONE_BASED),
+ .common = {
+ .reg = 0x1e4,
+ .hw.init = CLK_HW_INIT("venc",
+ "gmac-pll",
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static struct ccu_div dpu0_clk = {
+ .div = TH_CCU_DIV_FLAGS(0, 8, CLK_DIVIDER_ONE_BASED),
+ .common = {
+ .reg = 0x1e8,
+ .hw.init = CLK_HW_INIT("dpu0",
+ "dpu0-pll",
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static struct ccu_div dpu1_clk = {
+ .div = TH_CCU_DIV_FLAGS(0, 8, CLK_DIVIDER_ONE_BASED),
+ .common = {
+ .reg = 0x1ec,
+ .hw.init = CLK_HW_INIT("dpu1",
+ "dpu1-pll",
+ &ccu_div_ops,
+ 0),
+ },
+};
+
+static CCU_GATE(emmc_sdio_clk, "emmc-sdio", "video-pll", 0x204, BIT(30), 0);
+static CCU_GATE(gmac1_clk, "gmac1", "gmac-pll", 0x204, BIT(26), 0);
+static CCU_GATE(padctrl1_clk, "padctrl1", "perisys-apb-pclk", 0x204, BIT(24), 0);
+static CCU_GATE(dsmart_clk, "dsmart", "perisys-apb-pclk", 0x204, BIT(23), 0);
+static CCU_GATE(padctrl0_clk, "padctrl0", "perisys-apb-pclk", 0x204, BIT(22), 0);
+static CCU_GATE(gmac_axi_clk, "gmac-axi", "axi4-cpusys2-aclk", 0x204, BIT(21), 0);
+static CCU_GATE(gpio3_clk, "gpio3-clk", "peri2sys-apb-pclk", 0x204, BIT(20), 0);
+static CCU_GATE(gmac0_clk, "gmac0", "gmac-pll", 0x204, BIT(19), 0);
+static CCU_GATE(pwm_clk, "pwm", "perisys-apb-pclk", 0x204, BIT(18), 0);
+static CCU_GATE(qspi0_clk, "qspi0", "video-pll", 0x204, BIT(17), 0);
+static CCU_GATE(qspi1_clk, "qspi1", "video-pll", 0x204, BIT(16), 0);
+static CCU_GATE(spi_clk, "spi", "video-pll", 0x204, BIT(15), 0);
+static CCU_GATE(uart0_pclk, "uart0-pclk", "perisys-apb-pclk", 0x204, BIT(14), 0);
+static CCU_GATE(uart1_pclk, "uart1-pclk", "perisys-apb-pclk", 0x204, BIT(13), 0);
+static CCU_GATE(uart2_pclk, "uart2-pclk", "perisys-apb-pclk", 0x204, BIT(12), 0);
+static CCU_GATE(uart3_pclk, "uart3-pclk", "perisys-apb-pclk", 0x204, BIT(11), 0);
+static CCU_GATE(uart4_pclk, "uart4-pclk", "perisys-apb-pclk", 0x204, BIT(10), 0);
+static CCU_GATE(uart5_pclk, "uart5-pclk", "perisys-apb-pclk", 0x204, BIT(9), 0);
+static CCU_GATE(gpio0_clk, "gpio0-clk", "perisys-apb-pclk", 0x204, BIT(8), 0);
+static CCU_GATE(gpio1_clk, "gpio1-clk", "perisys-apb-pclk", 0x204, BIT(7), 0);
+static CCU_GATE(gpio2_clk, "gpio2-clk", "peri2sys-apb-pclk", 0x204, BIT(6), 0);
+static CCU_GATE(i2c0_clk, "i2c0", "perisys-apb-pclk", 0x204, BIT(5), 0);
+static CCU_GATE(i2c1_clk, "i2c1", "perisys-apb-pclk", 0x204, BIT(4), 0);
+static CCU_GATE(i2c2_clk, "i2c2", "perisys-apb-pclk", 0x204, BIT(3), 0);
+static CCU_GATE(i2c3_clk, "i2c3", "perisys-apb-pclk", 0x204, BIT(2), 0);
+static CCU_GATE(i2c4_clk, "i2c4", "perisys-apb-pclk", 0x204, BIT(1), 0);
+static CCU_GATE(i2c5_clk, "i2c5", "perisys-apb-pclk", 0x204, BIT(0), 0);
+
+static CCU_GATE(spinlock_clk, "spinlock", "ahb2-cpusys-hclk", 0x208, BIT(10), 0);
+static CCU_GATE(dma_clk, "dma", "axi4-cpusys2-aclk", 0x208, BIT(8), 0);
+static CCU_GATE(mbox0_clk, "mbox0", "apb3-cpusys-pclk", 0x208, BIT(7), 0);
+static CCU_GATE(mbox1_clk, "mbox1", "apb3-cpusys-pclk", 0x208, BIT(6), 0);
+static CCU_GATE(mbox2_clk, "mbox2", "apb3-cpusys-pclk", 0x208, BIT(5), 0);
+static CCU_GATE(mbox3_clk, "mbox3", "apb3-cpusys-pclk", 0x208, BIT(4), 0);
+static CCU_GATE(wdt0_clk, "wdt0", "apb3-cpusys-pclk", 0x208, BIT(3), 0);
+static CCU_GATE(wdt1_clk, "wdt1", "apb3-cpusys-pclk", 0x208, BIT(2), 0);
+static CCU_GATE(timer0_clk, "timer0", "apb3-cpusys-pclk", 0x208, BIT(1), 0);
+static CCU_GATE(timer1_clk, "timer1", "apb3-cpusys-pclk", 0x208, BIT(0), 0);
+
+static CCU_GATE(sram0_clk, "sram0", "axi-aclk", 0x20c, BIT(4), 0);
+static CCU_GATE(sram1_clk, "sram1", "axi-aclk", 0x20c, BIT(3), 0);
+static CCU_GATE(sram2_clk, "sram2", "axi-aclk", 0x20c, BIT(2), 0);
+static CCU_GATE(sram3_clk, "sram3", "axi-aclk", 0x20c, BIT(1), 0);
+
+static CLK_FIXED_FACTOR_HW(gmac_pll_clk_100m, "gmac-pll-clk-100m",
+ &gmac_pll_clk.common.hw,
+ 10, 1, 0);
+
+static const char * const uart_sclk_parents[] = { "gmac-pll-clk-100m", "osc_24m" };
+struct ccu_mux uart_sclk = {
+ .mux = TH_CCU_ARG(0, 1),
+ .common = {
+ .reg = 0x210,
+ .hw.init = CLK_HW_INIT_PARENTS("uart-sclk",
+ uart_sclk_parents,
+ &ccu_mux_ops,
+ 0),
+ }
+};
+
+static struct ccu_common *th1520_clks[] = {
+ &cpu_pll0_clk.common,
+ &cpu_pll1_clk.common,
+ &gmac_pll_clk.common,
+ &video_pll_clk.common,
+ &dpu0_pll_clk.common,
+ &dpu1_pll_clk.common,
+ &tee_pll_clk.common,
+ &c910_i0_clk.common,
+ &c910_clk.common,
+ &brom_clk.common,
+ &bmu_clk.common,
+ &ahb2_cpusys_hclk.common,
+ &apb3_cpusys_pclk.common,
+ &axi4_cpusys2_aclk.common,
+ &aon2cpu_a2x_clk.common,
+ &x2x_cpusys_clk.common,
+ &axi_aclk.common,
+ &cpu2aon_x2h_clk.common,
+ &perisys_ahb_hclk.common,
+ &cpu2peri_x2h_clk.common,
+ &perisys_apb_pclk.common,
+ &peri2sys_apb_pclk.common,
+ &perisys_apb1_hclk.common,
+ &perisys_apb2_hclk.common,
+ &perisys_apb3_hclk.common,
+ &perisys_apb4_hclk.common,
+ &out1_clk.common,
+ &out2_clk.common,
+ &out3_clk.common,
+ &out4_clk.common,
+ &apb_pclk.common,
+ &npu_clk.common,
+ &npu_axi_clk.common,
+ &vi_clk.common,
+ &vi_ahb_clk.common,
+ &vo_axi_clk.common,
+ &vp_apb_clk.common,
+ &vp_axi_clk.common,
+ &cpu2vp_clk.common,
+ &venc_clk.common,
+ &dpu0_clk.common,
+ &dpu1_clk.common,
+ &emmc_sdio_clk.common,
+ &gmac1_clk.common,
+ &padctrl1_clk.common,
+ &dsmart_clk.common,
+ &padctrl0_clk.common,
+ &gmac_axi_clk.common,
+ &gpio3_clk.common,
+ &gmac0_clk.common,
+ &pwm_clk.common,
+ &qspi0_clk.common,
+ &qspi1_clk.common,
+ &spi_clk.common,
+ &uart0_pclk.common,
+ &uart1_pclk.common,
+ &uart2_pclk.common,
+ &uart3_pclk.common,
+ &uart4_pclk.common,
+ &uart5_pclk.common,
+ &gpio0_clk.common,
+ &gpio1_clk.common,
+ &gpio2_clk.common,
+ &i2c0_clk.common,
+ &i2c1_clk.common,
+ &i2c2_clk.common,
+ &i2c3_clk.common,
+ &i2c4_clk.common,
+ &i2c5_clk.common,
+ &spinlock_clk.common,
+ &dma_clk.common,
+ &mbox0_clk.common,
+ &mbox1_clk.common,
+ &mbox2_clk.common,
+ &mbox3_clk.common,
+ &wdt0_clk.common,
+ &wdt1_clk.common,
+ &timer0_clk.common,
+ &timer1_clk.common,
+ &sram0_clk.common,
+ &sram1_clk.common,
+ &sram2_clk.common,
+ &sram3_clk.common,
+ &uart_sclk.common,
+};
+
+#define NR_CLKS (CLK_UART_SCLK + 1)
+
+static struct clk_hw_onecell_data th1520_hw_clks = {
+ .hws = {
+ [CLK_OSC12M] = &osc12m_clk.hw,
+ [CLK_CPU_PLL0] = &cpu_pll0_clk.common.hw,
+ [CLK_CPU_PLL1] = &cpu_pll1_clk.common.hw,
+ [CLK_GMAC_PLL] = &gmac_pll_clk.common.hw,
+ [CLK_VIDEO_PLL] = &video_pll_clk.common.hw,
+ [CLK_DPU0_PLL] = &dpu0_pll_clk.common.hw,
+ [CLK_DPU1_PLL] = &dpu1_pll_clk.common.hw,
+ [CLK_TEE_PLL] = &tee_pll_clk.common.hw,
+ [CLK_C910_I0] = &c910_i0_clk.common.hw,
+ [CLK_C910] = &c910_clk.common.hw,
+ [CLK_BROM] = &brom_clk.common.hw,
+ [CLK_BMU] = &bmu_clk.common.hw,
+ [CLK_AHB2_CPUSYS_HCLK] = &ahb2_cpusys_hclk.common.hw,
+ [CLK_APB3_CPUSYS_PCLK] = &apb3_cpusys_pclk.common.hw,
+ [CLK_AXI4_CPUSYS2_ACLK] = &axi4_cpusys2_aclk.common.hw,
+ [CLK_AON2CPU_A2X] = &aon2cpu_a2x_clk.common.hw,
+ [CLK_X2X_CPUSYS] = &x2x_cpusys_clk.common.hw,
+ [CLK_AXI_ACLK] = &axi_aclk.common.hw,
+ [CLK_CPU2AON_X2H] = &cpu2aon_x2h_clk.common.hw,
+ [CLK_PERI_AHB_HCLK] = &perisys_ahb_hclk.common.hw,
+ [CLK_CPU2PERI_X2H] = &cpu2peri_x2h_clk.common.hw,
+ [CLK_PERI_APB_PCLK] = &perisys_apb_pclk.common.hw,
+ [CLK_PERI2APB_PCLK] = &peri2sys_apb_pclk.common.hw,
+ [CLK_PERI_APB1_HCLK] = &perisys_apb1_hclk.common.hw,
+ [CLK_PERI_APB2_HCLK] = &perisys_apb2_hclk.common.hw,
+ [CLK_PERI_APB3_HCLK] = &perisys_apb3_hclk.common.hw,
+ [CLK_PERI_APB4_HCLK] = &perisys_apb4_hclk.common.hw,
+ [CLK_OUT1] = &out1_clk.common.hw,
+ [CLK_OUT2] = &out2_clk.common.hw,
+ [CLK_OUT3] = &out3_clk.common.hw,
+ [CLK_OUT4] = &out4_clk.common.hw,
+ [CLK_APB_PCLK] = &apb_pclk.common.hw,
+ [CLK_NPU] = &npu_clk.common.hw,
+ [CLK_NPU_AXI] = &npu_axi_clk.common.hw,
+ [CLK_VI] = &vi_clk.common.hw,
+ [CLK_VI_AHB] = &vi_ahb_clk.common.hw,
+ [CLK_VO_AXI] = &vo_axi_clk.common.hw,
+ [CLK_VP_APB] = &vp_apb_clk.common.hw,
+ [CLK_VP_AXI] = &vp_axi_clk.common.hw,
+ [CLK_CPU2VP] = &cpu2vp_clk.common.hw,
+ [CLK_VENC] = &venc_clk.common.hw,
+ [CLK_DPU0] = &dpu0_clk.common.hw,
+ [CLK_DPU1] = &dpu1_clk.common.hw,
+ [CLK_EMMC_SDIO] = &emmc_sdio_clk.common.hw,
+ [CLK_GMAC1] = &gmac1_clk.common.hw,
+ [CLK_PADCTRL1] = &padctrl1_clk.common.hw,
+ [CLK_DSMART] = &dsmart_clk.common.hw,
+ [CLK_PADCTRL0] = &padctrl0_clk.common.hw,
+ [CLK_GMAC_AXI] = &gmac_axi_clk.common.hw,
+ [CLK_GPIO3] = &gpio3_clk.common.hw,
+ [CLK_GMAC0] = &gmac0_clk.common.hw,
+ [CLK_PWM] = &pwm_clk.common.hw,
+ [CLK_QSPI0] = &qspi0_clk.common.hw,
+ [CLK_QSPI1] = &qspi1_clk.common.hw,
+ [CLK_SPI] = &spi_clk.common.hw,
+ [CLK_UART0_PCLK] = &uart0_pclk.common.hw,
+ [CLK_UART1_PCLK] = &uart1_pclk.common.hw,
+ [CLK_UART2_PCLK] = &uart2_pclk.common.hw,
+ [CLK_UART3_PCLK] = &uart3_pclk.common.hw,
+ [CLK_UART4_PCLK] = &uart4_pclk.common.hw,
+ [CLK_UART5_PCLK] = &uart5_pclk.common.hw,
+ [CLK_GPIO0] = &gpio0_clk.common.hw,
+ [CLK_GPIO1] = &gpio1_clk.common.hw,
+ [CLK_GPIO2] = &gpio2_clk.common.hw,
+ [CLK_I2C0] = &i2c0_clk.common.hw,
+ [CLK_I2C1] = &i2c1_clk.common.hw,
+ [CLK_I2C2] = &i2c2_clk.common.hw,
+ [CLK_I2C3] = &i2c3_clk.common.hw,
+ [CLK_I2C4] = &i2c4_clk.common.hw,
+ [CLK_I2C5] = &i2c5_clk.common.hw,
+ [CLK_SPINLOCK] = &spinlock_clk.common.hw,
+ [CLK_DMA] = &dma_clk.common.hw,
+ [CLK_MBOX0] = &mbox0_clk.common.hw,
+ [CLK_MBOX1] = &mbox1_clk.common.hw,
+ [CLK_MBOX2] = &mbox2_clk.common.hw,
+ [CLK_MBOX3] = &mbox3_clk.common.hw,
+ [CLK_WDT0] = &wdt0_clk.common.hw,
+ [CLK_WDT1] = &wdt1_clk.common.hw,
+ [CLK_TIMER0] = &timer0_clk.common.hw,
+ [CLK_TIMER1] = &timer1_clk.common.hw,
+ [CLK_SRAM0] = &sram0_clk.common.hw,
+ [CLK_SRAM1] = &sram1_clk.common.hw,
+ [CLK_SRAM2] = &sram2_clk.common.hw,
+ [CLK_SRAM3] = &sram3_clk.common.hw,
+ [CLK_PLL_GMAC_100M] = &gmac_pll_clk_100m.hw,
+ [CLK_UART_SCLK] = &uart_sclk.common.hw,
+ },
+ .num = NR_CLKS,
+};
+
+static const struct regmap_config th1520_clk_regmap_config = {
+ .reg_bits = 32,
+ .val_bits = 32,
+ .reg_stride = 4,
+ .fast_io = true,
+};
+
+static int th1520_clk_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct regmap *map;
+ void __iomem *regs;
+ int ret, i;
+
+ regs = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(regs))
+ return PTR_ERR(regs);
+
+ map = devm_regmap_init_mmio(dev, regs, &th1520_clk_regmap_config);
+ if (IS_ERR(map))
+ return PTR_ERR(map);
+
+ for (i = 0; i < ARRAY_SIZE(th1520_clks); i++)
+ th1520_clks[i]->map = map;
+
+ for (i = 0; i < th1520_hw_clks.num; i++) {
+ ret = devm_clk_hw_register(dev, th1520_hw_clks.hws[i]);
+ if (ret)
+ return ret;
+ }
+
+ ret = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
+ &th1520_hw_clks);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static const struct of_device_id th1520_clk_match[] = {
+ {
+ .compatible = "thead,th1520-clk-ap",
+ },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, th1520_clk_match);
+
+static struct platform_driver th1520_clk_driver = {
+ .probe = th1520_clk_probe,
+ .driver = {
+ .name = "th1520-clk",
+ .of_match_table = th1520_clk_match,
+ },
+};
+module_platform_driver(th1520_clk_driver);
+
+MODULE_DESCRIPTION("T-HEAD TH1520 AP Clock driver");
+MODULE_AUTHOR("Yangtao Li <frank.li@...o.com>");
+MODULE_AUTHOR("Jisheng Zhang <jszhang@...nel.org>");
+MODULE_LICENSE("GPL");
--
2.34.1
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