clk: imx8mm: add clkout1/2 support

clkout1 and clkout2 allow to supply clocks from the SoC to the board,
which is used by some board designs to provide reference clocks.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Author: lynxeye-dev

drivers/clk/imx/clk-imx8mm.c

@@ -288,6 +288,11 @@ static const char *imx8mm_clko1_sels[] = {"osc_24m", "sys_pll1_800m", "dummy", "
 static const char *imx8mm_clko2_sels[] = {"osc_24m", "sys_pll2_200m", "sys_pll1_400m", "sys_pll2_166m",
 					  "sys_pll3_out", "audio_pll1_out", "video_pll1_out", "osc_32k", };
 
+static const char * const clkout_sels[] = {"audio_pll1_out", "audio_pll2_out", "video_pll1_out",
+					   "dummy", "dummy", "gpu_pll_out", "vpu_pll_out",
+					   "arm_pll_out", "sys_pll1", "sys_pll2", "sys_pll3",
+					   "dummy", "dummy", "osc_24m", "dummy", "osc_32k"};
+
 static struct clk_hw_onecell_data *clk_hw_data;
 static struct clk_hw **hws;
 
@@ -410,6 +415,13 @@ static int imx8mm_clocks_probe(struct platform_device *pdev)
 	hws[IMX8MM_SYS_PLL2_500M] = imx_clk_hw_fixed_factor("sys_pll2_500m", "sys_pll2_500m_cg", 1, 2);
 	hws[IMX8MM_SYS_PLL2_1000M] = imx_clk_hw_fixed_factor("sys_pll2_1000m", "sys_pll2_out", 1, 1);
 
+	hws[IMX8MM_CLK_CLKOUT1_SEL] = imx_clk_hw_mux("clkout1_sel", base + 0x128, 4, 4, clkout_sels, ARRAY_SIZE(clkout_sels));
+	hws[IMX8MM_CLK_CLKOUT1_DIV] = imx_clk_hw_divider("clkout1_div", "clkout1_sel", base + 0x128, 0, 4);
+	hws[IMX8MM_CLK_CLKOUT1] = imx_clk_hw_gate("clkout1", "clkout1_div", base + 0x128, 8);
+	hws[IMX8MM_CLK_CLKOUT2_SEL] = imx_clk_hw_mux("clkout2_sel", base + 0x128, 20, 4, clkout_sels, ARRAY_SIZE(clkout_sels));
+	hws[IMX8MM_CLK_CLKOUT2_DIV] = imx_clk_hw_divider("clkout2_div", "clkout2_sel", base + 0x128, 16, 4);
+	hws[IMX8MM_CLK_CLKOUT2] = imx_clk_hw_gate("clkout2", "clkout2_div", base + 0x128, 24);
+
 	np = dev->of_node;
 	base = devm_platform_ioremap_resource(pdev, 0);
 	if (WARN_ON(IS_ERR(base)))

include/dt-bindings/clock/imx8mm-clock.h

@@ -274,6 +274,14 @@
 
 #define IMX8MM_CLK_A53_CORE			251
 
-#define IMX8MM_CLK_END				252
+#define IMX8MM_CLK_CLKOUT1_SEL			252
+#define IMX8MM_CLK_CLKOUT1_DIV			253
+#define IMX8MM_CLK_CLKOUT1			254
+#define IMX8MM_CLK_CLKOUT2_SEL			255
+#define IMX8MM_CLK_CLKOUT2_DIV			256
+#define IMX8MM_CLK_CLKOUT2			257
+
+
+#define IMX8MM_CLK_END				258
 
 #endif