clk: meson: meson8b: add the cts_amclk clocks

Add the I2S master clock also referred as cts_amclk. The setup for this
clock is identical to GXBB, so this ports commit 4087bd4b21702d ("clk:
meson: gxbb: add cts_amclk") to the Meson8/Meson8b/Meson8m2 clock
driver.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>

2 files changed, 69 insertions, 1 deletions

diff --git a/drivers/clk/meson/meson8b.c b/drivers/clk/meson/meson8b.c
index 62cd3a7f1f65..e00f42e7fc46 100644
--- a/drivers/clk/meson/meson8b.c
+++ b/drivers/clk/meson/meson8b.c
@@ -2153,6 +2153,59 @@ static struct clk_regmap meson8b_vdec_hevc = {
 	},
 };
 
+/* TODO: the clock at index 0 is "DDR_PLL" which we don't support yet */
+static const char * const meson8b_cts_amclk_parent_names[] = {
+	"mpll0", "mpll1", "mpll2"
+};
+
+static u32 meson8b_cts_amclk_mux_table[] = { 1, 2, 3 };
+
+static struct clk_regmap meson8b_cts_amclk_sel = {
+	.data = &(struct clk_regmap_mux_data){
+		.offset = HHI_AUD_CLK_CNTL,
+		.mask = 0x3,
+		.shift = 9,
+		.table = meson8b_cts_amclk_mux_table,
+		.flags = CLK_MUX_ROUND_CLOSEST,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "cts_amclk_sel",
+		.ops = &clk_regmap_mux_ops,
+		.parent_names = meson8b_cts_amclk_parent_names,
+		.num_parents = ARRAY_SIZE(meson8b_cts_amclk_parent_names),
+	},
+};
+
+static struct clk_regmap meson8b_cts_amclk_div = {
+	.data = &(struct clk_regmap_div_data) {
+		.offset = HHI_AUD_CLK_CNTL,
+		.shift = 0,
+		.width = 8,
+		.flags = CLK_DIVIDER_ROUND_CLOSEST,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "cts_amclk_div",
+		.ops = &clk_regmap_divider_ops,
+		.parent_names = (const char *[]){ "cts_amclk_sel" },
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap meson8b_cts_amclk = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = HHI_AUD_CLK_CNTL,
+		.bit_idx = 8,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "cts_amclk",
+		.ops = &clk_regmap_gate_ops,
+		.parent_names = (const char *[]){ "cts_amclk_div" },
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
 /* Everything Else (EE) domain gates */
 
 static MESON_GATE(meson8b_ddr, HHI_GCLK_MPEG0, 0);
@@ -2432,6 +2485,9 @@ static struct clk_hw_onecell_data meson8_hw_onecell_data = {
 		[CLKID_VDEC_HEVC_DIV]	    = &meson8b_vdec_hevc_div.hw,
 		[CLKID_VDEC_HEVC_EN]	    = &meson8b_vdec_hevc_en.hw,
 		[CLKID_VDEC_HEVC]	    = &meson8b_vdec_hevc.hw,
+		[CLKID_CTS_AMCLK_SEL]	    = &meson8b_cts_amclk_sel.hw,
+		[CLKID_CTS_AMCLK_DIV]	    = &meson8b_cts_amclk_div.hw,
+		[CLKID_CTS_AMCLK]	    = &meson8b_cts_amclk.hw,
 		[CLK_NR_CLKS]		    = NULL,
 	},
 	.num = CLK_NR_CLKS,
@@ -2641,6 +2697,9 @@ static struct clk_hw_onecell_data meson8b_hw_onecell_data = {
 		[CLKID_VDEC_HEVC_DIV]	    = &meson8b_vdec_hevc_div.hw,
 		[CLKID_VDEC_HEVC_EN]	    = &meson8b_vdec_hevc_en.hw,
 		[CLKID_VDEC_HEVC]	    = &meson8b_vdec_hevc.hw,
+		[CLKID_CTS_AMCLK_SEL]	    = &meson8b_cts_amclk_sel.hw,
+		[CLKID_CTS_AMCLK_DIV]	    = &meson8b_cts_amclk_div.hw,
+		[CLKID_CTS_AMCLK]	    = &meson8b_cts_amclk.hw,
 		[CLK_NR_CLKS]		    = NULL,
 	},
 	.num = CLK_NR_CLKS,
@@ -2852,6 +2911,9 @@ static struct clk_hw_onecell_data meson8m2_hw_onecell_data = {
 		[CLKID_VDEC_HEVC_DIV]	    = &meson8b_vdec_hevc_div.hw,
 		[CLKID_VDEC_HEVC_EN]	    = &meson8b_vdec_hevc_en.hw,
 		[CLKID_VDEC_HEVC]	    = &meson8b_vdec_hevc.hw,
+		[CLKID_CTS_AMCLK_SEL]	    = &meson8b_cts_amclk_sel.hw,
+		[CLKID_CTS_AMCLK_DIV]	    = &meson8b_cts_amclk_div.hw,
+		[CLKID_CTS_AMCLK]	    = &meson8b_cts_amclk.hw,
 		[CLK_NR_CLKS]		    = NULL,
 	},
 	.num = CLK_NR_CLKS,
@@ -3041,6 +3103,9 @@ static struct clk_regmap *const meson8b_clk_regmaps[] = {
 	&meson8b_vdec_hevc_div,
 	&meson8b_vdec_hevc_en,
 	&meson8b_vdec_hevc,
+	&meson8b_cts_amclk,
+	&meson8b_cts_amclk_sel,
+	&meson8b_cts_amclk_div,
 };
 
 static const struct meson8b_clk_reset_line {
diff --git a/drivers/clk/meson/meson8b.h b/drivers/clk/meson/meson8b.h
index ed37196187e6..03efa47e800f 100644
--- a/drivers/clk/meson/meson8b.h
+++ b/drivers/clk/meson/meson8b.h
@@ -30,6 +30,7 @@
 #define HHI_SYS_CPU_CLK_CNTL1		0x15c /* 0x57 offset in data sheet */
 #define HHI_VID_CLK_DIV			0x164 /* 0x59 offset in data sheet */
 #define HHI_MPEG_CLK_CNTL		0x174 /* 0x5d offset in data sheet */
+#define HHI_AUD_CLK_CNTL		0x178 /* 0x5e offset in data sheet */
 #define HHI_VID_CLK_CNTL		0x17c /* 0x5f offset in data sheet */
 #define HHI_VID_CLK_CNTL2		0x194 /* 0x65 offset in data sheet */
 #define HHI_VID_DIVIDER_CNTL		0x198 /* 0x66 offset in data sheet */
@@ -171,8 +172,10 @@
 #define CLKID_VDEC_HEVC_SEL	203
 #define CLKID_VDEC_HEVC_DIV	204
 #define CLKID_VDEC_HEVC_EN	205
+#define CLKID_CTS_AMCLK_SEL	207
+#define CLKID_CTS_AMCLK_DIV	208
 
-#define CLK_NR_CLKS		207
+#define CLK_NR_CLKS		210
 
 /*
  * include the CLKID and RESETID that have