[v3,5/8] clk: imx: imx8mn: distinguish between ccm and anatop references
diff mbox series

Message ID 20241106090549.3684963-6-dario.binacchi@amarulasolutions.com
State New
Headers show
Series
  • Support spread spectrum clocking for i.MX8{M,N,P} PLLs
Related show

Commit Message

Dario Binacchi Nov. 6, 2024, 8:58 a.m. UTC 
The patch distinguishes between the references to the ccm node (np, base)
and those to the anatop node (anatop_np, anatop_base). In this way, the
code improves in readability and is less prone to errors.

The patch is also preparatory for future developments.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

Changes in v3:
- Added in version 3

 drivers/clk/imx/clk-imx8mn.c | 96 ++++++++++++++++++------------------
 1 file changed, 48 insertions(+), 48 deletions(-)

Patch
diff mbox series 

diff --git a/drivers/clk/imx/clk-imx8mn.c b/drivers/clk/imx/clk-imx8mn.c
index ab77e148e70c..feefc9ef4f51 100644
--- a/drivers/clk/imx/clk-imx8mn.c
+++ b/drivers/clk/imx/clk-imx8mn.c
@@ -320,7 +320,8 @@  static int imx8mn_clocks_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
-	void __iomem *base;
+	struct device_node *anatop_np;
+	void __iomem *base, *anatop_base;
 	int ret;
 
 	clk_hw_data = devm_kzalloc(dev, struct_size(clk_hw_data, hws,
@@ -339,56 +340,56 @@  static int imx8mn_clocks_probe(struct platform_device *pdev)
 	hws[IMX8MN_CLK_EXT3] = imx_get_clk_hw_by_name(np, "clk_ext3");
 	hws[IMX8MN_CLK_EXT4] = imx_get_clk_hw_by_name(np, "clk_ext4");
 
-	np = of_find_compatible_node(NULL, NULL, "fsl,imx8mn-anatop");
-	base = devm_of_iomap(dev, np, 0, NULL);
-	of_node_put(np);
-	if (WARN_ON(IS_ERR(base))) {
-		ret = PTR_ERR(base);
+	anatop_np = of_find_compatible_node(NULL, NULL, "fsl,imx8mn-anatop");
+	anatop_base = devm_of_iomap(dev, anatop_np, 0, NULL);
+	of_node_put(anatop_np);
+	if (WARN_ON(IS_ERR(anatop_base))) {
+		ret = PTR_ERR(anatop_base);
 		goto unregister_hws;
 	}
 
-	hws[IMX8MN_AUDIO_PLL1_REF_SEL] = imx_clk_hw_mux("audio_pll1_ref_sel", base + 0x0, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
-	hws[IMX8MN_AUDIO_PLL2_REF_SEL] = imx_clk_hw_mux("audio_pll2_ref_sel", base + 0x14, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
-	hws[IMX8MN_VIDEO_PLL_REF_SEL] = imx_clk_hw_mux("video_pll_ref_sel", base + 0x28, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
-	hws[IMX8MN_DRAM_PLL_REF_SEL] = imx_clk_hw_mux("dram_pll_ref_sel", base + 0x50, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
-	hws[IMX8MN_GPU_PLL_REF_SEL] = imx_clk_hw_mux("gpu_pll_ref_sel", base + 0x64, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
-	hws[IMX8MN_M7_ALT_PLL_REF_SEL] = imx_clk_hw_mux("m7_alt_pll_ref_sel", base + 0x74, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
-	hws[IMX8MN_ARM_PLL_REF_SEL] = imx_clk_hw_mux("arm_pll_ref_sel", base + 0x84, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
-	hws[IMX8MN_SYS_PLL3_REF_SEL] = imx_clk_hw_mux("sys_pll3_ref_sel", base + 0x114, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
-
-	hws[IMX8MN_AUDIO_PLL1] = imx_clk_hw_pll14xx("audio_pll1", "audio_pll1_ref_sel", base, &imx_1443x_pll);
-	hws[IMX8MN_AUDIO_PLL2] = imx_clk_hw_pll14xx("audio_pll2", "audio_pll2_ref_sel", base + 0x14, &imx_1443x_pll);
-	hws[IMX8MN_VIDEO_PLL] = imx_clk_hw_pll14xx("video_pll", "video_pll_ref_sel", base + 0x28, &imx_1443x_pll);
-	hws[IMX8MN_DRAM_PLL] = imx_clk_hw_pll14xx("dram_pll", "dram_pll_ref_sel", base + 0x50, &imx_1443x_dram_pll);
-	hws[IMX8MN_GPU_PLL] = imx_clk_hw_pll14xx("gpu_pll", "gpu_pll_ref_sel", base + 0x64, &imx_1416x_pll);
-	hws[IMX8MN_M7_ALT_PLL] = imx_clk_hw_pll14xx("m7_alt_pll", "m7_alt_pll_ref_sel", base + 0x74, &imx_1416x_pll);
-	hws[IMX8MN_ARM_PLL] = imx_clk_hw_pll14xx("arm_pll", "arm_pll_ref_sel", base + 0x84, &imx_1416x_pll);
+	hws[IMX8MN_AUDIO_PLL1_REF_SEL] = imx_clk_hw_mux("audio_pll1_ref_sel", anatop_base + 0x0, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+	hws[IMX8MN_AUDIO_PLL2_REF_SEL] = imx_clk_hw_mux("audio_pll2_ref_sel", anatop_base + 0x14, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+	hws[IMX8MN_VIDEO_PLL_REF_SEL] = imx_clk_hw_mux("video_pll_ref_sel", anatop_base + 0x28, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+	hws[IMX8MN_DRAM_PLL_REF_SEL] = imx_clk_hw_mux("dram_pll_ref_sel", anatop_base + 0x50, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+	hws[IMX8MN_GPU_PLL_REF_SEL] = imx_clk_hw_mux("gpu_pll_ref_sel", anatop_base + 0x64, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+	hws[IMX8MN_M7_ALT_PLL_REF_SEL] = imx_clk_hw_mux("m7_alt_pll_ref_sel", anatop_base + 0x74, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+	hws[IMX8MN_ARM_PLL_REF_SEL] = imx_clk_hw_mux("arm_pll_ref_sel", anatop_base + 0x84, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+	hws[IMX8MN_SYS_PLL3_REF_SEL] = imx_clk_hw_mux("sys_pll3_ref_sel", anatop_base + 0x114, 0, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));
+
+	hws[IMX8MN_AUDIO_PLL1] = imx_clk_hw_pll14xx("audio_pll1", "audio_pll1_ref_sel", anatop_base, &imx_1443x_pll);
+	hws[IMX8MN_AUDIO_PLL2] = imx_clk_hw_pll14xx("audio_pll2", "audio_pll2_ref_sel", anatop_base + 0x14, &imx_1443x_pll);
+	hws[IMX8MN_VIDEO_PLL] = imx_clk_hw_pll14xx("video_pll", "video_pll_ref_sel", anatop_base + 0x28, &imx_1443x_pll);
+	hws[IMX8MN_DRAM_PLL] = imx_clk_hw_pll14xx("dram_pll", "dram_pll_ref_sel", anatop_base + 0x50, &imx_1443x_dram_pll);
+	hws[IMX8MN_GPU_PLL] = imx_clk_hw_pll14xx("gpu_pll", "gpu_pll_ref_sel", anatop_base + 0x64, &imx_1416x_pll);
+	hws[IMX8MN_M7_ALT_PLL] = imx_clk_hw_pll14xx("m7_alt_pll", "m7_alt_pll_ref_sel", anatop_base + 0x74, &imx_1416x_pll);
+	hws[IMX8MN_ARM_PLL] = imx_clk_hw_pll14xx("arm_pll", "arm_pll_ref_sel", anatop_base + 0x84, &imx_1416x_pll);
 	hws[IMX8MN_SYS_PLL1] = imx_clk_hw_fixed("sys_pll1", 800000000);
 	hws[IMX8MN_SYS_PLL2] = imx_clk_hw_fixed("sys_pll2", 1000000000);
-	hws[IMX8MN_SYS_PLL3] = imx_clk_hw_pll14xx("sys_pll3", "sys_pll3_ref_sel", base + 0x114, &imx_1416x_pll);
+	hws[IMX8MN_SYS_PLL3] = imx_clk_hw_pll14xx("sys_pll3", "sys_pll3_ref_sel", anatop_base + 0x114, &imx_1416x_pll);
 
 	/* PLL bypass out */
-	hws[IMX8MN_AUDIO_PLL1_BYPASS] = imx_clk_hw_mux_flags("audio_pll1_bypass", base, 16, 1, audio_pll1_bypass_sels, ARRAY_SIZE(audio_pll1_bypass_sels), CLK_SET_RATE_PARENT);
-	hws[IMX8MN_AUDIO_PLL2_BYPASS] = imx_clk_hw_mux_flags("audio_pll2_bypass", base + 0x14, 16, 1, audio_pll2_bypass_sels, ARRAY_SIZE(audio_pll2_bypass_sels), CLK_SET_RATE_PARENT);
-	hws[IMX8MN_VIDEO_PLL_BYPASS] = imx_clk_hw_mux_flags("video_pll_bypass", base + 0x28, 16, 1, video_pll_bypass_sels, ARRAY_SIZE(video_pll_bypass_sels), CLK_SET_RATE_PARENT);
-	hws[IMX8MN_DRAM_PLL_BYPASS] = imx_clk_hw_mux_flags("dram_pll_bypass", base + 0x50, 16, 1, dram_pll_bypass_sels, ARRAY_SIZE(dram_pll_bypass_sels), CLK_SET_RATE_PARENT);
-	hws[IMX8MN_GPU_PLL_BYPASS] = imx_clk_hw_mux_flags("gpu_pll_bypass", base + 0x64, 28, 1, gpu_pll_bypass_sels, ARRAY_SIZE(gpu_pll_bypass_sels), CLK_SET_RATE_PARENT);
-	hws[IMX8MN_M7_ALT_PLL_BYPASS] = imx_clk_hw_mux_flags("m7_alt_pll_bypass", base + 0x74, 28, 1, m7_alt_pll_bypass_sels, ARRAY_SIZE(m7_alt_pll_bypass_sels), CLK_SET_RATE_PARENT);
-	hws[IMX8MN_ARM_PLL_BYPASS] = imx_clk_hw_mux_flags("arm_pll_bypass", base + 0x84, 28, 1, arm_pll_bypass_sels, ARRAY_SIZE(arm_pll_bypass_sels), CLK_SET_RATE_PARENT);
-	hws[IMX8MN_SYS_PLL3_BYPASS] = imx_clk_hw_mux_flags("sys_pll3_bypass", base + 0x114, 28, 1, sys_pll3_bypass_sels, ARRAY_SIZE(sys_pll3_bypass_sels), CLK_SET_RATE_PARENT);
+	hws[IMX8MN_AUDIO_PLL1_BYPASS] = imx_clk_hw_mux_flags("audio_pll1_bypass", anatop_base, 16, 1, audio_pll1_bypass_sels, ARRAY_SIZE(audio_pll1_bypass_sels), CLK_SET_RATE_PARENT);
+	hws[IMX8MN_AUDIO_PLL2_BYPASS] = imx_clk_hw_mux_flags("audio_pll2_bypass", anatop_base + 0x14, 16, 1, audio_pll2_bypass_sels, ARRAY_SIZE(audio_pll2_bypass_sels), CLK_SET_RATE_PARENT);
+	hws[IMX8MN_VIDEO_PLL_BYPASS] = imx_clk_hw_mux_flags("video_pll_bypass", anatop_base + 0x28, 16, 1, video_pll_bypass_sels, ARRAY_SIZE(video_pll_bypass_sels), CLK_SET_RATE_PARENT);
+	hws[IMX8MN_DRAM_PLL_BYPASS] = imx_clk_hw_mux_flags("dram_pll_bypass", anatop_base + 0x50, 16, 1, dram_pll_bypass_sels, ARRAY_SIZE(dram_pll_bypass_sels), CLK_SET_RATE_PARENT);
+	hws[IMX8MN_GPU_PLL_BYPASS] = imx_clk_hw_mux_flags("gpu_pll_bypass", anatop_base + 0x64, 28, 1, gpu_pll_bypass_sels, ARRAY_SIZE(gpu_pll_bypass_sels), CLK_SET_RATE_PARENT);
+	hws[IMX8MN_M7_ALT_PLL_BYPASS] = imx_clk_hw_mux_flags("m7_alt_pll_bypass", anatop_base + 0x74, 28, 1, m7_alt_pll_bypass_sels, ARRAY_SIZE(m7_alt_pll_bypass_sels), CLK_SET_RATE_PARENT);
+	hws[IMX8MN_ARM_PLL_BYPASS] = imx_clk_hw_mux_flags("arm_pll_bypass", anatop_base + 0x84, 28, 1, arm_pll_bypass_sels, ARRAY_SIZE(arm_pll_bypass_sels), CLK_SET_RATE_PARENT);
+	hws[IMX8MN_SYS_PLL3_BYPASS] = imx_clk_hw_mux_flags("sys_pll3_bypass", anatop_base + 0x114, 28, 1, sys_pll3_bypass_sels, ARRAY_SIZE(sys_pll3_bypass_sels), CLK_SET_RATE_PARENT);
 
 	/* PLL out gate */
-	hws[IMX8MN_AUDIO_PLL1_OUT] = imx_clk_hw_gate("audio_pll1_out", "audio_pll1_bypass", base, 13);
-	hws[IMX8MN_AUDIO_PLL2_OUT] = imx_clk_hw_gate("audio_pll2_out", "audio_pll2_bypass", base + 0x14, 13);
-	hws[IMX8MN_VIDEO_PLL_OUT] = imx_clk_hw_gate("video_pll_out", "video_pll_bypass", base + 0x28, 13);
-	hws[IMX8MN_DRAM_PLL_OUT] = imx_clk_hw_gate("dram_pll_out", "dram_pll_bypass", base + 0x50, 13);
-	hws[IMX8MN_GPU_PLL_OUT] = imx_clk_hw_gate("gpu_pll_out", "gpu_pll_bypass", base + 0x64, 11);
-	hws[IMX8MN_M7_ALT_PLL_OUT] = imx_clk_hw_gate("m7_alt_pll_out", "m7_alt_pll_bypass", base + 0x74, 11);
-	hws[IMX8MN_ARM_PLL_OUT] = imx_clk_hw_gate("arm_pll_out", "arm_pll_bypass", base + 0x84, 11);
-	hws[IMX8MN_SYS_PLL3_OUT] = imx_clk_hw_gate("sys_pll3_out", "sys_pll3_bypass", base + 0x114, 11);
+	hws[IMX8MN_AUDIO_PLL1_OUT] = imx_clk_hw_gate("audio_pll1_out", "audio_pll1_bypass", anatop_base, 13);
+	hws[IMX8MN_AUDIO_PLL2_OUT] = imx_clk_hw_gate("audio_pll2_out", "audio_pll2_bypass", anatop_base + 0x14, 13);
+	hws[IMX8MN_VIDEO_PLL_OUT] = imx_clk_hw_gate("video_pll_out", "video_pll_bypass", anatop_base + 0x28, 13);
+	hws[IMX8MN_DRAM_PLL_OUT] = imx_clk_hw_gate("dram_pll_out", "dram_pll_bypass", anatop_base + 0x50, 13);
+	hws[IMX8MN_GPU_PLL_OUT] = imx_clk_hw_gate("gpu_pll_out", "gpu_pll_bypass", anatop_base + 0x64, 11);
+	hws[IMX8MN_M7_ALT_PLL_OUT] = imx_clk_hw_gate("m7_alt_pll_out", "m7_alt_pll_bypass", anatop_base + 0x74, 11);
+	hws[IMX8MN_ARM_PLL_OUT] = imx_clk_hw_gate("arm_pll_out", "arm_pll_bypass", anatop_base + 0x84, 11);
+	hws[IMX8MN_SYS_PLL3_OUT] = imx_clk_hw_gate("sys_pll3_out", "sys_pll3_bypass", anatop_base + 0x114, 11);
 
 	/* SYS PLL1 fixed output */
-	hws[IMX8MN_SYS_PLL1_OUT] = imx_clk_hw_gate("sys_pll1_out", "sys_pll1", base + 0x94, 11);
+	hws[IMX8MN_SYS_PLL1_OUT] = imx_clk_hw_gate("sys_pll1_out", "sys_pll1", anatop_base + 0x94, 11);
 	hws[IMX8MN_SYS_PLL1_40M] = imx_clk_hw_fixed_factor("sys_pll1_40m", "sys_pll1_out", 1, 20);
 	hws[IMX8MN_SYS_PLL1_80M] = imx_clk_hw_fixed_factor("sys_pll1_80m", "sys_pll1_out", 1, 10);
 	hws[IMX8MN_SYS_PLL1_100M] = imx_clk_hw_fixed_factor("sys_pll1_100m", "sys_pll1_out", 1, 8);
@@ -400,7 +401,7 @@  static int imx8mn_clocks_probe(struct platform_device *pdev)
 	hws[IMX8MN_SYS_PLL1_800M] = imx_clk_hw_fixed_factor("sys_pll1_800m", "sys_pll1_out", 1, 1);
 
 	/* SYS PLL2 fixed output */
-	hws[IMX8MN_SYS_PLL2_OUT] = imx_clk_hw_gate("sys_pll2_out", "sys_pll2", base + 0x104, 11);
+	hws[IMX8MN_SYS_PLL2_OUT] = imx_clk_hw_gate("sys_pll2_out", "sys_pll2", anatop_base + 0x104, 11);
 	hws[IMX8MN_SYS_PLL2_50M] = imx_clk_hw_fixed_factor("sys_pll2_50m", "sys_pll2_out", 1, 20);
 	hws[IMX8MN_SYS_PLL2_100M] = imx_clk_hw_fixed_factor("sys_pll2_100m", "sys_pll2_out", 1, 10);
 	hws[IMX8MN_SYS_PLL2_125M] = imx_clk_hw_fixed_factor("sys_pll2_125m", "sys_pll2_out", 1, 8);
@@ -411,14 +412,13 @@  static int imx8mn_clocks_probe(struct platform_device *pdev)
 	hws[IMX8MN_SYS_PLL2_500M] = imx_clk_hw_fixed_factor("sys_pll2_500m", "sys_pll2_out", 1, 2);
 	hws[IMX8MN_SYS_PLL2_1000M] = imx_clk_hw_fixed_factor("sys_pll2_1000m", "sys_pll2_out", 1, 1);
 
-	hws[IMX8MN_CLK_CLKOUT1_SEL] = imx_clk_hw_mux2("clkout1_sel", base + 0x128, 4, 4, clkout_sels, ARRAY_SIZE(clkout_sels));
-	hws[IMX8MN_CLK_CLKOUT1_DIV] = imx_clk_hw_divider("clkout1_div", "clkout1_sel", base + 0x128, 0, 4);
-	hws[IMX8MN_CLK_CLKOUT1] = imx_clk_hw_gate("clkout1", "clkout1_div", base + 0x128, 8);
-	hws[IMX8MN_CLK_CLKOUT2_SEL] = imx_clk_hw_mux2("clkout2_sel", base + 0x128, 20, 4, clkout_sels, ARRAY_SIZE(clkout_sels));
-	hws[IMX8MN_CLK_CLKOUT2_DIV] = imx_clk_hw_divider("clkout2_div", "clkout2_sel", base + 0x128, 16, 4);
-	hws[IMX8MN_CLK_CLKOUT2] = imx_clk_hw_gate("clkout2", "clkout2_div", base + 0x128, 24);
+	hws[IMX8MN_CLK_CLKOUT1_SEL] = imx_clk_hw_mux2("clkout1_sel", anatop_base + 0x128, 4, 4, clkout_sels, ARRAY_SIZE(clkout_sels));
+	hws[IMX8MN_CLK_CLKOUT1_DIV] = imx_clk_hw_divider("clkout1_div", "clkout1_sel", anatop_base + 0x128, 0, 4);
+	hws[IMX8MN_CLK_CLKOUT1] = imx_clk_hw_gate("clkout1", "clkout1_div", anatop_base + 0x128, 8);
+	hws[IMX8MN_CLK_CLKOUT2_SEL] = imx_clk_hw_mux2("clkout2_sel", anatop_base + 0x128, 20, 4, clkout_sels, ARRAY_SIZE(clkout_sels));
+	hws[IMX8MN_CLK_CLKOUT2_DIV] = imx_clk_hw_divider("clkout2_div", "clkout2_sel", anatop_base + 0x128, 16, 4);
+	hws[IMX8MN_CLK_CLKOUT2] = imx_clk_hw_gate("clkout2", "clkout2_div", anatop_base + 0x128, 24);
 
-	np = dev->of_node;
 	base = devm_platform_ioremap_resource(pdev, 0);
 	if (WARN_ON(IS_ERR(base))) {
 		ret = PTR_ERR(base);