[RESEND PATCH v1 2/2] clk: Add clock driver for Amlogic A1
Igor Prusov
ivprusov at salutedevices.com
Sun Sep 17 12:13:08 CEST 2023
This patch adds basic clock driver for Amlogic A1 Family which supports
enabling/disabling some gates, getting frequencies and setting rate
with limited reparenting.
Signed-off-by: Igor Prusov <ivprusov at salutedevices.com>
---
arch/arm/include/asm/arch-meson/clock-a1.h | 23 +
drivers/clk/meson/Kconfig | 8 +
drivers/clk/meson/Makefile | 1 +
drivers/clk/meson/a1.c | 681 +++++++++++++++++++++
4 files changed, 713 insertions(+)
create mode 100644 arch/arm/include/asm/arch-meson/clock-a1.h
create mode 100644 drivers/clk/meson/a1.c
diff --git a/arch/arm/include/asm/arch-meson/clock-a1.h b/arch/arm/include/asm/arch-meson/clock-a1.h
new file mode 100644
index 0000000000..f6795f5e0c
--- /dev/null
+++ b/arch/arm/include/asm/arch-meson/clock-a1.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2018 - AmLogic, Inc.
+ * Copyright 2023 (C) SberDevices, Inc.
+ */
+
+#ifndef _ARCH_MESON_CLOCK_A1_H_
+#define _ARCH_MESON_CLOCK_A1_H_
+
+/*
+ * Clock controller register offsets
+ */
+#define A1_SYS_OSCIN_CTRL 0x0
+#define A1_SYS_CLK_CTRL0 0x10
+#define A1_SYS_CLK_EN0 0x1c
+#define A1_SAR_ADC_CLK_CTR 0xc0
+#define A1_SPIFC_CLK_CTRL 0xd8
+#define A1_USB_BUSCLK_CTRL 0xdc
+#define A1_SD_EMMC_CLK_CTRL 0xe0
+
+#define A1_ANACTRL_FIXPLL_CTRL0 0x0
+
+#endif /* _ARCH_MESON_CLOCK_A1_H_ */
diff --git a/drivers/clk/meson/Kconfig b/drivers/clk/meson/Kconfig
index 994b44ad7a..cdc9d6f76c 100644
--- a/drivers/clk/meson/Kconfig
+++ b/drivers/clk/meson/Kconfig
@@ -21,3 +21,11 @@ config CLK_MESON_G12A
help
Enable clock support for the Amlogic G12A SoC family, such as
the S905X/D2
+
+config CLK_MESON_A1
+ bool "Enable clock support for Amlogic A1"
+ depends on CLK && ARCH_MESON
+ default MESON_A1
+ help
+ Enable clock support for the Amlogic A1 SoC family, such as
+ the A113L
diff --git a/drivers/clk/meson/Makefile b/drivers/clk/meson/Makefile
index a486b13e9c..d975f07aab 100644
--- a/drivers/clk/meson/Makefile
+++ b/drivers/clk/meson/Makefile
@@ -8,3 +8,4 @@ obj-$(CONFIG_CLK_MESON_AXG) += axg.o
obj-$(CONFIG_CLK_MESON_AXG) += axg-ao.o
obj-$(CONFIG_CLK_MESON_G12A) += g12a.o
obj-$(CONFIG_CLK_MESON_G12A) += g12a-ao.o
+obj-$(CONFIG_CLK_MESON_A1) += a1.o
diff --git a/drivers/clk/meson/a1.c b/drivers/clk/meson/a1.c
new file mode 100644
index 0000000000..6b2b9e6925
--- /dev/null
+++ b/drivers/clk/meson/a1.c
@@ -0,0 +1,681 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2023 SberDevices, Inc.
+ * Author: Igor Prusov <ivprusov at salutedevices.com>
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <regmap.h>
+#include <asm/arch/clock-a1.h>
+#include <dt-bindings/clock/amlogic,a1-pll-clkc.h>
+#include <dt-bindings/clock/amlogic,a1-peripherals-clkc.h>
+#include "clk_meson.h"
+
+/*
+ * This driver supports both PLL and peripherals clock sources.
+ * Following operations are supported:
+ * - calculating clock frequency on a limited tree
+ * - reading muxes and dividers
+ * - enabling/disabling gates without propagation
+ * - reparenting without rate propagation, only on muxes
+ * - setting rates with limited reparenting, only on dividers with mux parent
+ */
+
+#define NR_CLKS 154
+#define NR_PLL_CLKS 11
+
+#define EXTERNAL_XTAL (NR_CLKS + 0)
+#define EXTERNAL_FCLK_DIV2 (NR_CLKS + 1)
+#define EXTERNAL_FCLK_DIV3 (NR_CLKS + 2)
+#define EXTERNAL_FCLK_DIV5 (NR_CLKS + 3)
+#define EXTERNAL_FCLK_DIV7 (NR_CLKS + 4)
+
+#define EXTERNAL_FIXPLL_IN (NR_PLL_CLKS + 1)
+
+#define SET_PARM_VALUE(_priv, _parm, _val) \
+ regmap_update_bits((_priv)->map, (_parm)->reg_off, \
+ SETPMASK((_parm)->width, (_parm)->shift), \
+ (_val) << (_parm)->shift)
+
+#define GET_PARM_VALUE(_priv, _parm) \
+({ \
+ uint _reg; \
+ regmap_read((_priv)->map, (_parm)->reg_off, &_reg); \
+ PARM_GET((_parm)->width, (_parm)->shift, _reg); \
+})
+
+struct meson_clk {
+ struct regmap *map;
+};
+
+enum meson_clk_type {
+ MESON_CLK_ANY = 0,
+ MESON_CLK_GATE,
+ MESON_CLK_MUX,
+ MESON_CLK_DIV,
+ MESON_CLK_FIXED_DIV,
+ MESON_CLK_EXTERNAL,
+ MESON_CLK_PLL,
+};
+
+struct meson_clk_info {
+ const char *name;
+ union {
+ const struct parm *parm;
+ u8 div;
+ };
+ const unsigned int *parents;
+ const enum meson_clk_type type;
+};
+
+struct meson_clk_data {
+ const u8 num_clocks;
+ const struct meson_clk_info **clocks;
+};
+
+#define CLK_MUX(_name, _reg, _shift, _width, ...) \
+ (&(struct meson_clk_info){ \
+ .parents = (const unsigned int[])__VA_ARGS__, \
+ .parm = &(struct parm) { \
+ .reg_off = (_reg), \
+ .shift = (_shift), \
+ .width = (_width), \
+ }, \
+ .name = (_name), \
+ .type = MESON_CLK_MUX, \
+ })
+
+#define CLK_DIV(_name, _reg, _shift, _width, _parent) \
+ (&(struct meson_clk_info){ \
+ .parents = (const unsigned int[]) { (_parent) }, \
+ .parm = &(struct parm) { \
+ .reg_off = (_reg), \
+ .shift = (_shift), \
+ .width = (_width), \
+ }, \
+ .name = (_name), \
+ .type = MESON_CLK_DIV, \
+ })
+
+#define CLK_DIV_FIXED(_name, _div, _parent) \
+ (&(struct meson_clk_info){ \
+ .parents = (const unsigned int[]) { (_parent) }, \
+ .div = (_div), \
+ .name = (_name), \
+ .type = MESON_CLK_FIXED_DIV, \
+ })
+
+#define CLK_EXTERNAL(_name) \
+ (&(struct meson_clk_info){ \
+ .name = (_name), \
+ .parents = (const unsigned int[]) { -ENOENT }, \
+ .type = MESON_CLK_EXTERNAL, \
+ })
+
+#define CLK_GATE(_name, _reg, _shift, _parent) \
+ (&(struct meson_clk_info){ \
+ .parents = (const unsigned int[]) { (_parent) }, \
+ .parm = &(struct parm) { \
+ .reg_off = (_reg), \
+ .shift = (_shift), \
+ .width = 1, \
+ }, \
+ .name = (_name), \
+ .type = MESON_CLK_GATE, \
+ })
+
+#define CLK_PLL(_name, _parent, ...) \
+ (&(struct meson_clk_info){ \
+ .name = (_name), \
+ .parents = (const unsigned int[]) { (_parent) }, \
+ .parm = (const struct parm[])__VA_ARGS__, \
+ .type = MESON_CLK_PLL, \
+ })
+
+static const struct meson_clk_info *meson_clocks[] = {
+ [CLKID_SPIFC_SEL] = CLK_MUX("spifc_sel", A1_SPIFC_CLK_CTRL, 9, 2, {
+ EXTERNAL_FCLK_DIV2,
+ EXTERNAL_FCLK_DIV3,
+ EXTERNAL_FCLK_DIV5,
+ -ENOENT,
+ }),
+ [CLKID_SPIFC_SEL2] = CLK_MUX("spifc_sel2", A1_SPIFC_CLK_CTRL, 15, 1, {
+ CLKID_SPIFC_DIV,
+ EXTERNAL_XTAL,
+ }),
+ [CLKID_USB_BUS_SEL] = CLK_MUX("usb_bus_sel", A1_USB_BUSCLK_CTRL, 9, 2, {
+ -ENOENT,
+ CLKID_SYS,
+ EXTERNAL_FCLK_DIV3,
+ EXTERNAL_FCLK_DIV5,
+ }),
+ [CLKID_SYS] = CLK_MUX("sys", A1_SYS_CLK_CTRL0, 31, 1, {
+ CLKID_SYS_A,
+ CLKID_SYS_B,
+ }),
+ [CLKID_SYS_A_SEL] = CLK_MUX("sys_a_sel", A1_SYS_CLK_CTRL0, 10, 3, {
+ -ENOENT,
+ EXTERNAL_FCLK_DIV2,
+ EXTERNAL_FCLK_DIV3,
+ EXTERNAL_FCLK_DIV5,
+ -ENOENT,
+ -ENOENT,
+ -ENOENT,
+ -ENOENT,
+ }),
+ [CLKID_SYS_B_SEL] = CLK_MUX("sys_b_sel", A1_SYS_CLK_CTRL0, 26, 3, {
+ -ENOENT,
+ EXTERNAL_FCLK_DIV2,
+ EXTERNAL_FCLK_DIV3,
+ EXTERNAL_FCLK_DIV5,
+ -ENOENT,
+ -ENOENT,
+ -ENOENT,
+ -ENOENT,
+ }),
+
+ [CLKID_SPIFC_DIV] = CLK_DIV("spifc_div", A1_SPIFC_CLK_CTRL, 0, 8,
+ CLKID_SPIFC_SEL
+ ),
+ [CLKID_USB_BUS_DIV] = CLK_DIV("usb_bus_div", A1_USB_BUSCLK_CTRL, 0, 8,
+ CLKID_USB_BUS_SEL
+ ),
+ [CLKID_SYS_A_DIV] = CLK_DIV("sys_a_div", A1_SYS_CLK_CTRL0, 0, 10,
+ CLKID_SYS_A_SEL
+ ),
+ [CLKID_SYS_B_DIV] = CLK_DIV("sys_b_div", A1_SYS_CLK_CTRL0, 16, 10,
+ CLKID_SYS_B_SEL
+ ),
+
+ [CLKID_SPIFC] = CLK_GATE("spifc", A1_SPIFC_CLK_CTRL, 8,
+ CLKID_SPIFC_SEL2
+ ),
+ [CLKID_USB_BUS] = CLK_GATE("usb_bus", A1_USB_BUSCLK_CTRL, 8,
+ CLKID_USB_BUS_DIV
+ ),
+ [CLKID_SYS_A] = CLK_GATE("sys_a", A1_SYS_CLK_CTRL0, 13,
+ CLKID_SYS_A_DIV
+ ),
+ [CLKID_SYS_B] = CLK_GATE("sys_b", A1_SYS_CLK_CTRL0, 29,
+ CLKID_SYS_B_DIV
+ ),
+ [CLKID_FIXPLL_IN] = CLK_GATE("fixpll_in", A1_SYS_OSCIN_CTRL, 1,
+ EXTERNAL_XTAL
+ ),
+ [CLKID_SARADC] = CLK_GATE("saradc", A1_SAR_ADC_CLK_CTR, 8,
+ -ENOENT
+ ),
+ [CLKID_SARADC_EN] = CLK_GATE("saradc_en", A1_SYS_CLK_EN0, 13,
+ CLKID_SYS
+ ),
+
+ [EXTERNAL_XTAL] = CLK_EXTERNAL("xtal"),
+ [EXTERNAL_FCLK_DIV2] = CLK_EXTERNAL("fclk_div2"),
+ [EXTERNAL_FCLK_DIV3] = CLK_EXTERNAL("fclk_div3"),
+ [EXTERNAL_FCLK_DIV5] = CLK_EXTERNAL("fclk_div5"),
+ [EXTERNAL_FCLK_DIV7] = CLK_EXTERNAL("fclk_div7"),
+};
+
+static const struct meson_clk_info *meson_pll_clocks[] = {
+ [EXTERNAL_FIXPLL_IN] = CLK_EXTERNAL("fixpll_in"),
+
+ [CLKID_FIXED_PLL_DCO] = CLK_PLL("fixed_pll_dco", EXTERNAL_FIXPLL_IN, {
+ {A1_ANACTRL_FIXPLL_CTRL0, 0, 8},
+ {A1_ANACTRL_FIXPLL_CTRL0, 10, 5},
+ }),
+
+ [CLKID_FCLK_DIV2_DIV] = CLK_DIV_FIXED("fclk_div2_div", 2,
+ CLKID_FIXED_PLL
+ ),
+ [CLKID_FCLK_DIV3_DIV] = CLK_DIV_FIXED("fclk_div3_div", 3,
+ CLKID_FIXED_PLL
+ ),
+ [CLKID_FCLK_DIV5_DIV] = CLK_DIV_FIXED("fclk_div5_div", 5,
+ CLKID_FIXED_PLL
+ ),
+ [CLKID_FCLK_DIV7_DIV] = CLK_DIV_FIXED("fclk_div7_div", 7,
+ CLKID_FIXED_PLL
+ ),
+
+ [CLKID_FIXED_PLL] = CLK_GATE("fixed_pll", A1_ANACTRL_FIXPLL_CTRL0, 20,
+ CLKID_FIXED_PLL_DCO
+ ),
+ [CLKID_FCLK_DIV2] = CLK_GATE("fclk_div2", A1_ANACTRL_FIXPLL_CTRL0, 21,
+ CLKID_FCLK_DIV2_DIV
+ ),
+ [CLKID_FCLK_DIV3] = CLK_GATE("fclk_div3", A1_ANACTRL_FIXPLL_CTRL0, 22,
+ CLKID_FCLK_DIV3_DIV
+ ),
+ [CLKID_FCLK_DIV5] = CLK_GATE("fclk_div5", A1_ANACTRL_FIXPLL_CTRL0, 23,
+ CLKID_FCLK_DIV5_DIV
+ ),
+ [CLKID_FCLK_DIV7] = CLK_GATE("fclk_div7", A1_ANACTRL_FIXPLL_CTRL0, 24,
+ CLKID_FCLK_DIV7_DIV
+ ),
+};
+
+static const struct meson_clk_info *meson_clk_get_info(struct clk *clk, ulong id,
+ enum meson_clk_type type)
+{
+ struct meson_clk_data *data;
+ const struct meson_clk_info *info;
+
+ data = (struct meson_clk_data *)dev_get_driver_data(clk->dev);
+ if (id >= data->num_clocks)
+ return ERR_PTR(-EINVAL);
+
+ info = data->clocks[id];
+ if (!info)
+ return ERR_PTR(-ENOENT);
+
+ if (type != MESON_CLK_ANY && type != info->type)
+ return ERR_PTR(-EINVAL);
+
+ return info;
+}
+
+static ulong meson_clk_get_rate_by_id(struct clk *clk, unsigned long id);
+
+static int meson_set_gate(struct clk *clk, bool on)
+{
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ const struct meson_clk_info *info;
+
+ debug("%s: %sabling %lu\n", __func__, on ? "en" : "dis", clk->id);
+
+ info = meson_clk_get_info(clk, clk->id, MESON_CLK_ANY);
+ if (IS_ERR(info))
+ return PTR_ERR(info);
+
+ SET_PARM_VALUE(priv, info->parm, on);
+
+ return 0;
+}
+
+static int meson_clk_enable(struct clk *clk)
+{
+ return meson_set_gate(clk, true);
+}
+
+static int meson_clk_disable(struct clk *clk)
+{
+ return meson_set_gate(clk, false);
+}
+
+static ulong meson_div_get_rate(struct clk *clk, unsigned long id)
+{
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ u16 n;
+ ulong rate;
+ const struct meson_clk_info *info;
+
+ info = meson_clk_get_info(clk, id, MESON_CLK_DIV);
+ if (IS_ERR(info))
+ return PTR_ERR(info);
+
+ n = GET_PARM_VALUE(priv, info->parm) + 1;
+
+ rate = meson_clk_get_rate_by_id(clk, info->parents[0]);
+
+ return rate / n;
+}
+
+static int meson_clk_get_parent(struct clk *clk, unsigned long id)
+{
+ uint reg = 0;
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ const struct meson_clk_info *info;
+
+ info = meson_clk_get_info(clk, id, MESON_CLK_ANY);
+ if (IS_ERR(info))
+ return PTR_ERR(info);
+
+ if (info->type == MESON_CLK_MUX) {
+ reg = GET_PARM_VALUE(priv, info->parm);
+ if (IS_ERR_VALUE(reg))
+ return reg;
+ }
+
+ return info->parents[reg];
+}
+
+static ulong meson_pll_get_rate(struct clk *clk, unsigned long id)
+{
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ const struct meson_clk_info *info;
+ const struct parm *pm, *pn;
+ ulong parent_rate_mhz;
+ unsigned int parent;
+ u16 n, m;
+
+ info = meson_clk_get_info(clk, id, MESON_CLK_ANY);
+ if (IS_ERR(info))
+ return PTR_ERR(info);
+
+ pm = &info->parm[0];
+ pn = &info->parm[1];
+
+ n = GET_PARM_VALUE(priv, pn);
+ m = GET_PARM_VALUE(priv, pm);
+
+ if (n == 0)
+ return -EINVAL;
+
+ parent = info->parents[0];
+ parent_rate_mhz = meson_clk_get_rate_by_id(clk, parent) / 1000000;
+
+ return parent_rate_mhz * m / n * 1000000;
+}
+
+static ulong meson_clk_get_rate_by_id(struct clk *clk, unsigned long id)
+{
+ ulong rate, parent;
+ const struct meson_clk_info *info;
+
+ if (IS_ERR_VALUE(id))
+ return id;
+
+ info = meson_clk_get_info(clk, id, MESON_CLK_ANY);
+ if (IS_ERR(info))
+ return PTR_ERR(info);
+
+ switch (info->type) {
+ case MESON_CLK_PLL:
+ rate = meson_pll_get_rate(clk, id);
+ break;
+ case MESON_CLK_GATE:
+ case MESON_CLK_MUX:
+ parent = meson_clk_get_parent(clk, id);
+ rate = meson_clk_get_rate_by_id(clk, parent);
+ break;
+ case MESON_CLK_DIV:
+ rate = meson_div_get_rate(clk, id);
+ break;
+ case MESON_CLK_FIXED_DIV:
+ parent = meson_clk_get_parent(clk, id);
+ rate = meson_clk_get_rate_by_id(clk, parent) / info->div;
+ break;
+ case MESON_CLK_EXTERNAL: {
+ int ret;
+ struct clk external_clk;
+
+ ret = clk_get_by_name(clk->dev, info->name, &external_clk);
+ if (ret)
+ return ret;
+
+ rate = clk_get_rate(&external_clk);
+ break;
+ }
+ default:
+ rate = -EINVAL;
+ break;
+ }
+
+ return rate;
+}
+
+static ulong meson_clk_get_rate(struct clk *clk)
+{
+ return meson_clk_get_rate_by_id(clk, clk->id);
+}
+
+/* This implements rate propagation for dividers placed after multiplexer:
+ * ---------|\
+ * ..... | |---DIV--
+ * ---------|/
+ */
+static ulong meson_composite_set_rate(struct clk *clk, ulong id, ulong rate)
+{
+ unsigned int i, best_div_val;
+ unsigned long best_delta, best_parent;
+ const struct meson_clk_info *div;
+ const struct meson_clk_info *mux;
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+
+ div = meson_clk_get_info(clk, id, MESON_CLK_DIV);
+ if (IS_ERR(div))
+ return PTR_ERR(div);
+
+ mux = meson_clk_get_info(clk, div->parents[0], MESON_CLK_MUX);
+ if (IS_ERR(mux))
+ return PTR_ERR(mux);
+
+ best_parent = -EINVAL;
+ best_delta = ULONG_MAX;
+ for (i = 0; i < (1 << mux->parm->width); i++) {
+ unsigned long parent_rate, delta;
+ unsigned int div_val;
+
+ parent_rate = meson_clk_get_rate_by_id(clk, mux->parents[i]);
+ if (IS_ERR_VALUE(parent_rate))
+ continue;
+
+ /* If overflow, try to use max divider value */
+ div_val = min(DIV_ROUND_CLOSEST(parent_rate, rate),
+ (1UL << div->parm->width));
+
+ delta = abs(rate - (parent_rate / div_val));
+ if (delta < best_delta) {
+ best_delta = delta;
+ best_div_val = div_val;
+ best_parent = i;
+ }
+ }
+
+ if (IS_ERR_VALUE(best_parent))
+ return best_parent;
+
+ SET_PARM_VALUE(priv, mux->parm, best_parent);
+ /* Divider is set to (field value + 1), hence the decrement */
+ SET_PARM_VALUE(priv, div->parm, best_div_val - 1);
+
+ return 0;
+}
+
+static ulong meson_clk_set_rate_by_id(struct clk *clk, unsigned int id, ulong rate);
+
+static ulong meson_mux_set_rate(struct clk *clk, unsigned long id, ulong rate)
+{
+ int i;
+ ulong ret = -EINVAL;
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ const struct meson_clk_info *info;
+
+ info = meson_clk_get_info(clk, id, MESON_CLK_MUX);
+ if (IS_ERR(info))
+ return PTR_ERR(info);
+
+ for (i = 0; i < (1 << info->parm->width); i++) {
+ ret = meson_clk_set_rate_by_id(clk, info->parents[i], rate);
+ if (!ret) {
+ SET_PARM_VALUE(priv, info->parm, i);
+ break;
+ }
+ }
+
+ return ret;
+}
+
+static ulong meson_clk_set_rate_by_id(struct clk *clk, unsigned int id, ulong rate)
+{
+ switch (id) {
+ case CLKID_SPIFC_DIV:
+ case CLKID_USB_BUS_DIV:
+ return meson_composite_set_rate(clk, id, rate);
+ case CLKID_SPIFC:
+ case CLKID_USB_BUS: {
+ unsigned long parent = meson_clk_get_parent(clk, id);
+
+ return meson_clk_set_rate_by_id(clk, parent, rate);
+ }
+ case CLKID_SPIFC_SEL2:
+ return meson_mux_set_rate(clk, id, rate);
+ }
+
+ return -EINVAL;
+}
+
+static ulong meson_clk_set_rate(struct clk *clk, ulong rate)
+{
+ return meson_clk_set_rate_by_id(clk, clk->id, rate);
+}
+
+static int meson_mux_set_parent_by_id(struct clk *clk, unsigned int parent_id)
+{
+ unsigned int i, parent_index;
+ struct meson_clk *priv = dev_get_priv(clk->dev);
+ const struct meson_clk_info *info;
+
+ info = meson_clk_get_info(clk, clk->id, MESON_CLK_MUX);
+ if (IS_ERR(info))
+ return PTR_ERR(info);
+
+ parent_index = -EINVAL;
+ for (i = 0; i < (1 << info->parm->width); i++) {
+ if (parent_id == info->parents[i]) {
+ parent_index = i;
+ break;
+ }
+ }
+
+ if (IS_ERR_VALUE(parent_index))
+ return parent_index;
+
+ SET_PARM_VALUE(priv, info->parm, parent_index);
+
+ return 0;
+}
+
+static int meson_clk_set_parent(struct clk *clk, struct clk *parent_clk)
+{
+ return meson_mux_set_parent_by_id(clk, parent_clk->id);
+}
+
+static struct clk_ops meson_clk_ops = {
+ .disable = meson_clk_disable,
+ .enable = meson_clk_enable,
+ .get_rate = meson_clk_get_rate,
+ .set_rate = meson_clk_set_rate,
+ .set_parent = meson_clk_set_parent,
+};
+
+static int meson_clk_probe(struct udevice *dev)
+{
+ struct meson_clk *priv = dev_get_priv(dev);
+
+ return regmap_init_mem(dev_ofnode(dev), &priv->map);
+}
+
+struct meson_clk_data meson_a1_peripherals_info = {
+ .clocks = meson_clocks,
+ .num_clocks = ARRAY_SIZE(meson_clocks),
+};
+
+struct meson_clk_data meson_a1_pll_info = {
+ .clocks = meson_pll_clocks,
+ .num_clocks = ARRAY_SIZE(meson_pll_clocks),
+};
+
+static const struct udevice_id meson_clk_ids[] = {
+ {
+ .compatible = "amlogic,a1-peripherals-clkc",
+ .data = (ulong)&meson_a1_peripherals_info,
+ },
+ {
+ .compatible = "amlogic,a1-pll-clkc",
+ .data = (ulong)&meson_a1_pll_info,
+ },
+ { }
+};
+
+U_BOOT_DRIVER(meson_clk) = {
+ .name = "meson-clk-a1",
+ .id = UCLASS_CLK,
+ .of_match = meson_clk_ids,
+ .priv_auto = sizeof(struct meson_clk),
+ .ops = &meson_clk_ops,
+ .probe = meson_clk_probe,
+};
+
+static const char *meson_clk_get_name(struct clk *clk, int id)
+{
+ const struct meson_clk_info *info;
+
+ info = meson_clk_get_info(clk, id, MESON_CLK_ANY);
+
+ return IS_ERR(info) ? "unknown" : info->name;
+}
+
+static int meson_clk_dump(struct clk *clk)
+{
+ const struct meson_clk_info *info;
+ struct meson_clk *priv;
+ unsigned long rate;
+ char *state, frequency[80];
+ int parent;
+
+ priv = dev_get_priv(clk->dev);
+
+ info = meson_clk_get_info(clk, clk->id, MESON_CLK_ANY);
+ if (IS_ERR(info) || !info->name)
+ return -EINVAL;
+
+ rate = clk_get_rate(clk);
+ if (IS_ERR_VALUE(rate))
+ sprintf(frequency, "unknown");
+ else
+ sprintf(frequency, "%lu", rate);
+
+ if (info->type == MESON_CLK_GATE)
+ state = GET_PARM_VALUE(priv, info->parm) ? "enabled" : "disabled";
+ else
+ state = "N/A";
+
+ parent = meson_clk_get_parent(clk, clk->id);
+ printf("%15s%20s%20s%15s\n",
+ info->name,
+ frequency,
+ meson_clk_get_name(clk, parent),
+ state);
+
+ return 0;
+}
+
+static int meson_clk_dump_dev(struct udevice *dev)
+{
+ int i;
+ struct meson_clk_data *data;
+ const char *sep = "--------------------";
+
+ printf("%s:\n", dev->name);
+ printf("%.15s%s%s%.15s\n", sep, sep, sep, sep);
+ printf("%15s%20s%20s%15s\n", "clk", "frequency", "parent", "state");
+ printf("%.15s%s%s%.15s\n", sep, sep, sep, sep);
+
+ data = (struct meson_clk_data *)dev_get_driver_data(dev);
+ for (i = 0; i < data->num_clocks; i++) {
+ meson_clk_dump(&(struct clk){
+ .dev = dev,
+ .id = i
+ });
+ }
+
+ return 0;
+}
+
+int soc_clk_dump(void)
+{
+ struct udevice *dev;
+ int i = 0;
+
+ while (!uclass_get_device(UCLASS_CLK, i++, &dev)) {
+ if (dev->driver == DM_DRIVER_GET(meson_clk)) {
+ meson_clk_dump_dev(dev);
+ printf("\n");
+ }
+ }
+
+ return 0;
+}
--
2.34.1
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