[PATCH 4/7] drivers: clk: meson: Add Amlogic T7 sys pll support

Ronald Claveau
2026-02-18T11:00:43Z

Add SYS PLL for the clock controller of the Amlogic T7 SoC family.

Signed-off-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
---
drivers/clk/meson/t7-peripherals.c | 134 ++++++++++++++++++++++++++++-
1 file changed, 131 insertions(+), 3 deletions(-)

diff --git a/drivers/clk/meson/t7-peripherals.c b/drivers/clk/meson/t7-peripherals.c
index 214db7850d86..de206473f3a7 100644
--- a/drivers/clk/meson/t7-peripherals.c
+++ b/drivers/clk/meson/t7-peripherals.c
@@ -176,6 +176,127 @@ static struct clk_regmap t7_rtc = {
},
};

+static u32 t7_sys_parents_val_table[] = { 0, 1, 2, 3, 4, 5, 7 };
+static const struct clk_parent_data t7_sys_parents[] = {
+ { .fw_name = "xtal", },
+ { .fw_name = "fdiv2", },
+ { .fw_name = "fdiv3", },
+ { .fw_name = "fdiv4", },
+ { .fw_name = "fdiv5", },
+ { .fw_name = "axi_clk_frcpu", },
+ { .hw = &t7_rtc.hw },
+};
+
+static struct clk_regmap t7_sys_a_sel = {
+ .data = &(struct clk_regmap_mux_data){
+ .offset = SYS_CLK_CTRL0,
+ .mask = 0x7,
+ .shift = 10,
+ .table = t7_sys_parents_val_table,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "sys_a_sel",
+ .ops = &clk_regmap_mux_ops,
+ .parent_data = t7_sys_parents,
+ .num_parents = ARRAY_SIZE(t7_sys_parents),
+ },
+};
+
+static struct clk_regmap t7_sys_a_div = {
+ .data = &(struct clk_regmap_div_data){
+ .offset = SYS_CLK_CTRL0,
+ .shift = 0,
+ .width = 10,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "sys_a_div",
+ .ops = &clk_regmap_divider_ops,
+ .parent_hws = (const struct clk_hw *[]) {
+ &t7_sys_a_sel.hw
+ },
+ .num_parents = 1,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+};
+
+static struct clk_regmap t7_sys_a = {
+ .data = &(struct clk_regmap_gate_data){
+ .offset = SYS_CLK_CTRL0,
+ .bit_idx = 13,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "sys_a",
+ .ops = &clk_regmap_gate_ops,
+ .parent_hws = (const struct clk_hw *[]) {
+ &t7_sys_a_div.hw
+ },
+ .num_parents = 1,
+ },
+};
+
+static struct clk_regmap t7_sys_b_sel = {
+ .data = &(struct clk_regmap_mux_data){
+ .offset = SYS_CLK_CTRL0,
+ .mask = 0x7,
+ .shift = 26,
+ .table = t7_sys_parents_val_table,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "sys_b_sel",
+ .ops = &clk_regmap_mux_ops,
+ .parent_data = t7_sys_parents,
+ .num_parents = ARRAY_SIZE(t7_sys_parents),
+ },
+};
+
+static struct clk_regmap t7_sys_b_div = {
+ .data = &(struct clk_regmap_div_data){
+ .offset = SYS_CLK_CTRL0,
+ .shift = 16,
+ .width = 10,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "sys_b_div",
+ .ops = &clk_regmap_divider_ops,
+ .parent_hws = (const struct clk_hw *[]) {
+ &t7_sys_b_sel.hw
+ },
+ .num_parents = 1,
+ },
+};
+
+static struct clk_regmap t7_sys_b = {
+ .data = &(struct clk_regmap_gate_data){
+ .offset = SYS_CLK_CTRL0,
+ .bit_idx = 29,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "sys_b",
+ .ops = &clk_regmap_gate_ops,
+ .parent_hws = (const struct clk_hw *[]) {
+ &t7_sys_b_div.hw
+ },
+ .num_parents = 1,
+ },
+};
+
+static struct clk_regmap t7_sys = {
+ .data = &(struct clk_regmap_mux_data){
+ .offset = SYS_CLK_CTRL0,
+ .mask = 0x1,
+ .shift = 15,
+ },
+ .hw.init = &(struct clk_init_data){
+ .name = "sys_clk",
+ .ops = &clk_regmap_mux_ops,
+ .parent_hws = (const struct clk_hw *[]) {
+ &t7_sys_a.hw,
+ &t7_sys_b.hw,
+ },
+ .num_parents = 2,
+ },
+};
+
static struct clk_regmap t7_ceca_dualdiv_in = {
.data = &(struct clk_regmap_gate_data){
.offset = CECA_CTRL0,
@@ -824,7 +945,7 @@ static T7_COMP_GATE(sd_emmc_c, NAND_CLK_CTRL, 7, 0);

static const struct clk_parent_data t7_spicc_parents[] = {
{ .fw_name = "xtal", },
- { .fw_name = "sys", },
+ { .hw = &t7_sys.hw },
{ .fw_name = "fdiv4", },
{ .fw_name = "fdiv3", },
{ .fw_name = "fdiv2", },
@@ -859,7 +980,7 @@ static T7_COMP_GATE(spicc5, SPICC_CLK_CTRL2, 22, 0);

static const struct clk_parent_data t7_saradc_parents[] = {
{ .fw_name = "xtal" },
- { .fw_name = "sys" },
+ { .hw = &t7_sys.hw },
};

static T7_COMP_SEL(saradc, SAR_CLK_CTRL0, 9, 0x1, t7_saradc_parents);
@@ -929,7 +1050,7 @@ static T7_COMP_SEL(pwm_ao_h, PWM_CLK_AO_GH_CTRL, 25, 0x3, t7_pwm_parents);
static T7_COMP_DIV(pwm_ao_h, PWM_CLK_AO_GH_CTRL, 16, 8);
static T7_COMP_GATE(pwm_ao_h, PWM_CLK_AO_GH_CTRL, 24, 0);

-static const struct clk_parent_data t7_sys_pclk_parents = { .fw_name = "sys" };
+static const struct clk_parent_data t7_sys_pclk_parents = { .hw = &t7_sys.hw };

#define T7_SYS_PCLK(_name, _reg, _bit, _flags) \
MESON_PCLK(t7_##_name, _reg, _bit, &t7_sys_pclk_parents, _flags)
@@ -1161,6 +1282,13 @@ static struct clk_hw *t7_peripherals_hw_clks[] = {
[CLKID_PWM_AO_H_SEL] = &t7_pwm_ao_h_sel.hw,
[CLKID_PWM_AO_H_DIV] = &t7_pwm_ao_h_div.hw,
[CLKID_PWM_AO_H] = &t7_pwm_ao_h.hw,
+ [CLKID_SYS_A_SEL] = &t7_sys_a_sel.hw,
+ [CLKID_SYS_A_DIV] = &t7_sys_a_div.hw,
+ [CLKID_SYS_A] = &t7_sys_a.hw,
+ [CLKID_SYS_B_SEL] = &t7_sys_b_sel.hw,
+ [CLKID_SYS_B_DIV] = &t7_sys_b_div.hw,
+ [CLKID_SYS_B] = &t7_sys_b.hw,
+ [CLKID_SYS] = &t7_sys.hw,
[CLKID_SYS_DDR] = &t7_sys_ddr.hw,
[CLKID_SYS_DOS] = &t7_sys_dos.hw,
[CLKID_SYS_MIPI_DSI_A] = &t7_sys_mipi_dsi_a.hw,
--
2.49.0