diff mbox series

[v3,08/18] clk: qcom: videocc-sm8550: Move PLL & clk configuration to really probe

Message ID 20250327-videocc-pll-multi-pd-voting-v3-8-895fafd62627@quicinc.com
State New
Headers show
Series clk: qcom: Add support to attach multiple power domains in cc probe | expand

Commit Message

Jagadeesh Kona March 27, 2025, 9:52 a.m. UTC
Video PLLs on SM8550/SM8650 require both MMCX and MXC rails to be kept ON
to configure the PLLs properly. Hence move runtime power management, PLL
configuration and enable critical clocks to qcom_cc_really_probe() which
ensures all required power domains are in enabled state before configuring
the PLLs or enabling the clocks.

Signed-off-by: Jagadeesh Kona <quic_jkona@quicinc.com>
---
 drivers/clk/qcom/videocc-sm8550.c | 55 ++++++++++++++++-----------------------
 1 file changed, 22 insertions(+), 33 deletions(-)
diff mbox series

Patch

diff --git a/drivers/clk/qcom/videocc-sm8550.c b/drivers/clk/qcom/videocc-sm8550.c
index fcfe0cade6d0a95e749aabbc2af1174e5a70f0db..9c34ecc8ca5a042104956c48fd577b18929e6023 100644
--- a/drivers/clk/qcom/videocc-sm8550.c
+++ b/drivers/clk/qcom/videocc-sm8550.c
@@ -7,7 +7,6 @@ 
 #include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 
 #include <dt-bindings/clock/qcom,sm8650-videocc.h>
@@ -51,6 +50,7 @@  static struct alpha_pll_config video_cc_pll0_config = {
 
 static struct clk_alpha_pll video_cc_pll0 = {
 	.offset = 0x0,
+	.config = &video_cc_pll0_config,
 	.vco_table = lucid_ole_vco,
 	.num_vco = ARRAY_SIZE(lucid_ole_vco),
 	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID_OLE],
@@ -82,6 +82,7 @@  static struct alpha_pll_config video_cc_pll1_config = {
 
 static struct clk_alpha_pll video_cc_pll1 = {
 	.offset = 0x1000,
+	.config = &video_cc_pll1_config,
 	.vco_table = lucid_ole_vco,
 	.num_vco = ARRAY_SIZE(lucid_ole_vco),
 	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID_OLE],
@@ -511,6 +512,17 @@  static const struct qcom_reset_map video_cc_sm8550_resets[] = {
 	[VIDEO_CC_XO_CLK_ARES] = { .reg = 0x8124, .bit = 2, .udelay = 100 },
 };
 
+static struct clk_alpha_pll *video_cc_sm8550_plls[] = {
+	&video_cc_pll0,
+	&video_cc_pll1,
+};
+
+static u32 video_cc_sm8550_critical_cbcrs[] = {
+	0x80f4, /* VIDEO_CC_AHB_CLK */
+	0x8124, /* VIDEO_CC_XO_CLK */
+	0x8140, /* VIDEO_CC_SLEEP_CLK */
+};
+
 static const struct regmap_config video_cc_sm8550_regmap_config = {
 	.reg_bits = 32,
 	.reg_stride = 4,
@@ -527,6 +539,11 @@  static const struct qcom_cc_desc video_cc_sm8550_desc = {
 	.num_resets = ARRAY_SIZE(video_cc_sm8550_resets),
 	.gdscs = video_cc_sm8550_gdscs,
 	.num_gdscs = ARRAY_SIZE(video_cc_sm8550_gdscs),
+	.alpha_plls = video_cc_sm8550_plls,
+	.num_alpha_plls = ARRAY_SIZE(video_cc_sm8550_plls),
+	.clk_cbcrs = video_cc_sm8550_critical_cbcrs,
+	.num_clk_cbcrs = ARRAY_SIZE(video_cc_sm8550_critical_cbcrs),
+	.use_rpm = true,
 };
 
 static const struct of_device_id video_cc_sm8550_match_table[] = {
@@ -538,26 +555,7 @@  MODULE_DEVICE_TABLE(of, video_cc_sm8550_match_table);
 
 static int video_cc_sm8550_probe(struct platform_device *pdev)
 {
-	struct regmap *regmap;
-	int ret;
-	u32 sleep_clk_offset = 0x8140;
-
-	ret = devm_pm_runtime_enable(&pdev->dev);
-	if (ret)
-		return ret;
-
-	ret = pm_runtime_resume_and_get(&pdev->dev);
-	if (ret)
-		return ret;
-
-	regmap = qcom_cc_map(pdev, &video_cc_sm8550_desc);
-	if (IS_ERR(regmap)) {
-		pm_runtime_put(&pdev->dev);
-		return PTR_ERR(regmap);
-	}
-
 	if (of_device_is_compatible(pdev->dev.of_node, "qcom,sm8650-videocc")) {
-		sleep_clk_offset = 0x8150;
 		video_cc_pll0_config.l = 0x1e;
 		video_cc_pll0_config.alpha = 0xa000;
 		video_cc_pll1_config.l = 0x2b;
@@ -569,21 +567,12 @@  static int video_cc_sm8550_probe(struct platform_device *pdev)
 		video_cc_sm8550_clocks[VIDEO_CC_MVS1_SHIFT_CLK] = &video_cc_mvs1_shift_clk.clkr;
 		video_cc_sm8550_clocks[VIDEO_CC_MVS1C_SHIFT_CLK] = &video_cc_mvs1c_shift_clk.clkr;
 		video_cc_sm8550_clocks[VIDEO_CC_XO_CLK_SRC] = &video_cc_xo_clk_src.clkr;
-	}
-
-	clk_lucid_ole_pll_configure(&video_cc_pll0, regmap, &video_cc_pll0_config);
-	clk_lucid_ole_pll_configure(&video_cc_pll1, regmap, &video_cc_pll1_config);
-
-	/* Keep some clocks always-on */
-	qcom_branch_set_clk_en(regmap, 0x80f4); /* VIDEO_CC_AHB_CLK */
-	qcom_branch_set_clk_en(regmap, sleep_clk_offset); /* VIDEO_CC_SLEEP_CLK */
-	qcom_branch_set_clk_en(regmap, 0x8124); /* VIDEO_CC_XO_CLK */
 
-	ret = qcom_cc_really_probe(&pdev->dev, &video_cc_sm8550_desc, regmap);
-
-	pm_runtime_put(&pdev->dev);
+		/* Sleep clock offset changed to 0x8150 on SM8650 */
+		video_cc_sm8550_critical_cbcrs[2] = 0x8150;
+	}
 
-	return ret;
+	return qcom_cc_probe(pdev, &video_cc_sm8550_desc);
 }
 
 static struct platform_driver video_cc_sm8550_driver = {