clk: meson: g12a: add MIPI ISP clocks

Add the MIPI ISP gate, divider and mux used to feed the MIPI CSI ISP
(Image Signal Processor) IP on the Amlogic G12B SoC.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Tested-by: Daniel Scally <dan.scally@ideasonboard.com>
Link: https://lore.kernel.org/r/20231114-topic-amlogic-upstream-isp-clocks-v1-2-223958791501@linaro.org
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>

drivers/clk/meson/g12a.c

@@ -3754,6 +3754,66 @@ static struct clk_regmap g12a_mipi_dsi_pxclk = {
 	},
 };
 
+/* MIPI ISP Clocks */
+
+static const struct clk_parent_data g12b_mipi_isp_parent_data[] = {
+	{ .fw_name = "xtal", },
+	{ .hw = &g12a_gp0_pll.hw },
+	{ .hw = &g12a_hifi_pll.hw },
+	{ .hw = &g12a_fclk_div2p5.hw },
+	{ .hw = &g12a_fclk_div3.hw },
+	{ .hw = &g12a_fclk_div4.hw },
+	{ .hw = &g12a_fclk_div5.hw },
+	{ .hw = &g12a_fclk_div7.hw },
+};
+
+static struct clk_regmap g12b_mipi_isp_sel = {
+	.data = &(struct clk_regmap_mux_data){
+		.offset = HHI_ISP_CLK_CNTL,
+		.mask = 7,
+		.shift = 9,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "mipi_isp_sel",
+		.ops = &clk_regmap_mux_ops,
+		.parent_data = g12b_mipi_isp_parent_data,
+		.num_parents = ARRAY_SIZE(g12b_mipi_isp_parent_data),
+	},
+};
+
+static struct clk_regmap g12b_mipi_isp_div = {
+	.data = &(struct clk_regmap_div_data){
+		.offset = HHI_ISP_CLK_CNTL,
+		.shift = 0,
+		.width = 7,
+	},
+	.hw.init = &(struct clk_init_data){
+		.name = "mipi_isp_div",
+		.ops = &clk_regmap_divider_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12b_mipi_isp_sel.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
+static struct clk_regmap g12b_mipi_isp = {
+	.data = &(struct clk_regmap_gate_data){
+		.offset = HHI_ISP_CLK_CNTL,
+		.bit_idx = 8,
+	},
+	.hw.init = &(struct clk_init_data) {
+		.name = "mipi_isp",
+		.ops = &clk_regmap_gate_ops,
+		.parent_hws = (const struct clk_hw *[]) {
+			&g12b_mipi_isp_div.hw
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+	},
+};
+
 /* HDMI Clocks */
 
 static const struct clk_parent_data g12a_hdmi_parent_data[] = {
@@ -4765,6 +4825,9 @@ static struct clk_hw *g12b_hw_clks[] = {
 	[CLKID_MIPI_DSI_PXCLK_SEL]	= &g12a_mipi_dsi_pxclk_sel.hw,
 	[CLKID_MIPI_DSI_PXCLK_DIV]	= &g12a_mipi_dsi_pxclk_div.hw,
 	[CLKID_MIPI_DSI_PXCLK]		= &g12a_mipi_dsi_pxclk.hw,
+	[CLKID_MIPI_ISP_SEL]		= &g12b_mipi_isp_sel.hw,
+	[CLKID_MIPI_ISP_DIV]		= &g12b_mipi_isp_div.hw,
+	[CLKID_MIPI_ISP]		= &g12b_mipi_isp.hw,
 };
 
 static struct clk_hw *sm1_hw_clks[] = {
@@ -5261,6 +5324,9 @@ static struct clk_regmap *const g12a_clk_regmaps[] = {
 	&g12a_mipi_dsi_pxclk_sel,
 	&g12a_mipi_dsi_pxclk_div,
 	&g12a_mipi_dsi_pxclk,
+	&g12b_mipi_isp_sel,
+	&g12b_mipi_isp_div,
+	&g12b_mipi_isp,
 };
 
 static const struct reg_sequence g12a_init_regs[] = {

drivers/clk/meson/g12a.h

@@ -70,6 +70,7 @@
 #define HHI_MALI_CLK_CNTL		0x1b0
 #define HHI_VPU_CLKC_CNTL		0x1b4
 #define HHI_VPU_CLK_CNTL		0x1bC
+#define HHI_ISP_CLK_CNTL		0x1C0
 #define HHI_NNA_CLK_CNTL		0x1C8
 #define HHI_HDMI_CLK_CNTL		0x1CC
 #define HHI_VDEC_CLK_CNTL		0x1E0