[PATCH 1/7] drivers: clk: meson: Add Amlogic T7 fix pll support

* [PATCH 1/7] drivers: clk: meson: Add Amlogic T7 fix pll support
@ 2026-02-18 10:17 Ronald Claveau
  2026-02-18 10:53 ` [PATCH 7/7] arm64: dts: amlogic: Add EMMC for T7 khadas VIM4 Ronald Claveau
                   ` (3 more replies)
  0 siblings, 4 replies; 10+ messages in thread
From: Ronald Claveau @ 2026-02-18 10:17 UTC (permalink / raw)
  To: linux-amlogic
  Cc: Ronald Claveau, Neil Armstrong, Jerome Brunet, Michael Turquette,
	Stephen Boyd, Kevin Hilman, Martin Blumenstingl, linux-clk,
	linux-arm-kernel, linux-kernel

Add 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-pll.c | 257 +++++++++++++++++++++++++++++++++++++
 1 file changed, 257 insertions(+)

diff --git a/drivers/clk/meson/t7-pll.c b/drivers/clk/meson/t7-pll.c
index 0a622f45fa36..3dd3aca50b7c 100644
--- a/drivers/clk/meson/t7-pll.c
+++ b/drivers/clk/meson/t7-pll.c
@@ -71,6 +71,15 @@
 #define MCLK_PLL_CNTL4		0x10
 #define MCLK_PLL_STS		0x14
 
+#define FPLL_CTRL0		0x00
+#define FPLL_CTRL1		0x04
+#define FPLL_CTRL2		0x08
+#define FPLL_CTRL3		0x0c
+#define FPLL_CTRL4		0x10
+#define FPLL_CTRL5		0x14
+#define FPLL_CTRL6		0x18
+#define FPLL_STS		0x1c
+
 static const struct pll_mult_range t7_media_pll_mult_range = {
 	.min = 125,
 	.max = 250,
@@ -1047,6 +1056,253 @@ static const struct meson_clkc_data t7_mclk_data = {
 	},
 };
 
+static struct clk_regmap t7_fpll_dco = {
+	.data = &(struct meson_clk_pll_data){
+		.en = {
+			.reg_off = FPLL_CTRL0,
+			.shift   = 28,
+			.width   = 1,
+		},
+		.m = {
+			.reg_off = FPLL_CTRL0,
+			.shift   = 0,
+			.width   = 8,
+		},
+		.n = {
+			.reg_off = FPLL_CTRL0,
+			.shift   = 10,
+			.width   = 5,
+		},
+		.frac = {
+			.reg_off = FPLL_CTRL1,
+			.shift   = 0,
+			.width   = 17,
+		},
+		.l = {
+			.reg_off = FPLL_CTRL0,
+			.shift   = 31,
+			.width   = 1,
+		},
+		.rst = {
+			.reg_off = FPLL_CTRL0,
+			.shift   = 29,
+			.width   = 1,
+		},
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fpll_dco",
+		.ops = &meson_clk_pll_ro_ops,
+		.parent_data = &(const struct clk_parent_data) {
+			.fw_name = "xtal",
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap t7_fpll = {
+	.data = &(struct clk_regmap_div_data){
+		.offset = FPLL_CTRL0,
+		.shift = 16,
+		.width = 2,
+		.flags = CLK_DIVIDER_POWER_OF_TWO,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fpll",
+		.ops = &clk_regmap_divider_ro_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&t7_fpll_dco.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_fixed_factor t7_fdiv2_div = {
+	.mult = 1,
+	.div = 2,
+	.hw.init = &(struct clk_init_data){
+		.name = "fdiv2_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) { &t7_fpll.hw },
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap t7_fdiv2 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = FPLL_CTRL1,
+		.bit_idx = 24,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fdiv2",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&t7_fdiv2_div.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_IS_CRITICAL,
+	},
+};
+
+static struct clk_fixed_factor t7_fdiv2p5_div = {
+	.mult = 2,
+	.div = 5,
+	.hw.init = &(struct clk_init_data){
+		.name = "fdiv2p5_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&t7_fpll.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap t7_fdiv2p5 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = FPLL_CTRL1,
+		.bit_idx = 25,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fdiv2p5",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&t7_fdiv2p5_div.hw
+		},
+		.num_parents = 1,
+	},
+};
+
+static struct clk_fixed_factor t7_fdiv3_div = {
+	.mult = 1,
+	.div = 3,
+	.hw.init = &(struct clk_init_data){
+		.name = "fdiv3_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) { &t7_fpll.hw },
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap t7_fdiv3 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = FPLL_CTRL1,
+		.bit_idx = 20,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fdiv3",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&t7_fdiv3_div.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_IS_CRITICAL,
+	},
+};
+
+static struct clk_fixed_factor t7_fdiv4_div = {
+	.mult = 1,
+	.div = 4,
+	.hw.init = &(struct clk_init_data){
+		.name = "fdiv4_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) { &t7_fpll.hw },
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap t7_fdiv4 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = FPLL_CTRL1,
+		.bit_idx = 21,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fdiv4",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&t7_fdiv4_div.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_IS_CRITICAL,
+	},
+};
+
+static struct clk_fixed_factor t7_fdiv5_div = {
+	.mult = 1,
+	.div = 5,
+	.hw.init = &(struct clk_init_data){
+		.name = "fdiv5_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) { &t7_fpll.hw },
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap t7_fdiv5 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = FPLL_CTRL1,
+		.bit_idx = 22,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fdiv5",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&t7_fdiv5_div.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_IS_CRITICAL,
+	},
+};
+
+static struct clk_fixed_factor t7_fdiv7_div = {
+	.mult = 1,
+	.div = 7,
+	.hw.init = &(struct clk_init_data){
+		.name = "fdiv7_div",
+		.ops = &clk_fixed_factor_ops,
+		.parent_hws = (const struct clk_hw *[]) { &t7_fpll.hw },
+		.num_parents = 1,
+	},
+};
+
+static struct clk_regmap t7_fdiv7 = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = FPLL_CTRL1,
+		.bit_idx = 23,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "fdiv7",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&t7_fdiv7_div.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_IS_CRITICAL,
+	},
+};
+
+static struct clk_hw *t7_fpll_hw_clks[] = {
+	[CLKID_FPLL_DCO]	= &t7_fpll_dco.hw,
+	[CLKID_FPLL]		= &t7_fpll.hw,
+	[CLKID_FDIV2_DIV]	= &t7_fdiv2_div.hw,
+	[CLKID_FDIV2]		= &t7_fdiv2.hw,
+	[CLKID_FDIV2P5_DIV]	= &t7_fdiv2p5_div.hw,
+	[CLKID_FDIV2P5]		= &t7_fdiv2p5.hw,
+	[CLKID_FDIV3_DIV]	= &t7_fdiv3_div.hw,
+	[CLKID_FDIV3]		= &t7_fdiv3.hw,
+	[CLKID_FDIV4_DIV]	= &t7_fdiv4_div.hw,
+	[CLKID_FDIV4]		= &t7_fdiv4.hw,
+	[CLKID_FDIV5_DIV]	= &t7_fdiv5_div.hw,
+	[CLKID_FDIV5]		= &t7_fdiv5.hw,
+	[CLKID_FDIV7_DIV]	= &t7_fdiv7_div.hw,
+	[CLKID_FDIV7]		= &t7_fdiv7.hw,
+};
+
+static const struct meson_clkc_data t7_fpll_data = {
+	.hw_clks = {
+		.hws = t7_fpll_hw_clks,
+		.num = ARRAY_SIZE(t7_fpll_hw_clks),
+	},
+};
+
 static const struct of_device_id t7_pll_clkc_match_table[] = {
 	{ .compatible = "amlogic,t7-gp0-pll",	.data = &t7_gp0_data, },
 	{ .compatible = "amlogic,t7-gp1-pll",	.data = &t7_gp1_data, },
@@ -1055,6 +1311,7 @@ static const struct of_device_id t7_pll_clkc_match_table[] = {
 	{ .compatible = "amlogic,t7-mpll",	.data = &t7_mpll_data, },
 	{ .compatible = "amlogic,t7-hdmi-pll",	.data = &t7_hdmi_data, },
 	{ .compatible = "amlogic,t7-mclk-pll",	.data = &t7_mclk_data, },
+	{ .compatible = "amlogic,t7-fpll",	.data = &t7_fpll_data, },
 	{}
 };
 MODULE_DEVICE_TABLE(of, t7_pll_clkc_match_table);
-- 
2.49.0



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