diff mbox series

[v3,07/18] clk: qcom: videocc-sm8450: Move PLL & clk configuration to really probe

Message ID 20250327-videocc-pll-multi-pd-voting-v3-7-895fafd62627@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 SM8450/SM8475 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-sm8450.c | 54 +++++++++++++++------------------------
 1 file changed, 21 insertions(+), 33 deletions(-)

Comments

Dmitry Baryshkov March 27, 2025, 12:51 p.m. UTC | #1 
On Thu, Mar 27, 2025 at 03:22:27PM +0530, Jagadeesh Kona wrote:
> Video PLLs on SM8450/SM8475 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-sm8450.c | 54 +++++++++++++++------------------------
>  1 file changed, 21 insertions(+), 33 deletions(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
diff mbox series

Patch

diff --git a/drivers/clk/qcom/videocc-sm8450.c b/drivers/clk/qcom/videocc-sm8450.c
index 2e11dcffb6646d47b298c27ef68635a465dd728e..50259374273d04dcf1486ea59915347340b6f2aa 100644
--- a/drivers/clk/qcom/videocc-sm8450.c
+++ b/drivers/clk/qcom/videocc-sm8450.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,sm8450-videocc.h>
@@ -63,6 +62,7 @@  static const struct alpha_pll_config sm8475_video_cc_pll0_config = {
 
 static struct clk_alpha_pll video_cc_pll0 = {
 	.offset = 0x0,
+	.config = &video_cc_pll0_config,
 	.vco_table = lucid_evo_vco,
 	.num_vco = ARRAY_SIZE(lucid_evo_vco),
 	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID_EVO],
@@ -106,6 +106,7 @@  static const struct alpha_pll_config sm8475_video_cc_pll1_config = {
 
 static struct clk_alpha_pll video_cc_pll1 = {
 	.offset = 0x1000,
+	.config = &video_cc_pll1_config,
 	.vco_table = lucid_evo_vco,
 	.num_vco = ARRAY_SIZE(lucid_evo_vco),
 	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID_EVO],
@@ -407,6 +408,17 @@  static const struct qcom_reset_map video_cc_sm8450_resets[] = {
 	[VIDEO_CC_MVS1C_CLK_ARES] = { .reg = 0x808c, .bit = 2, .udelay = 1000 },
 };
 
+static struct clk_alpha_pll *video_cc_sm8450_plls[] = {
+	&video_cc_pll0,
+	&video_cc_pll1,
+};
+
+static u32 video_cc_sm8450_critical_cbcrs[] = {
+	0x80e4, /* VIDEO_CC_AHB_CLK */
+	0x8114, /* VIDEO_CC_XO_CLK */
+	0x8130, /* VIDEO_CC_SLEEP_CLK */
+};
+
 static const struct regmap_config video_cc_sm8450_regmap_config = {
 	.reg_bits = 32,
 	.reg_stride = 4,
@@ -423,6 +435,11 @@  static const struct qcom_cc_desc video_cc_sm8450_desc = {
 	.num_resets = ARRAY_SIZE(video_cc_sm8450_resets),
 	.gdscs = video_cc_sm8450_gdscs,
 	.num_gdscs = ARRAY_SIZE(video_cc_sm8450_gdscs),
+	.alpha_plls = video_cc_sm8450_plls,
+	.num_alpha_plls = ARRAY_SIZE(video_cc_sm8450_plls),
+	.clk_cbcrs = video_cc_sm8450_critical_cbcrs,
+	.num_clk_cbcrs = ARRAY_SIZE(video_cc_sm8450_critical_cbcrs),
+	.use_rpm = true,
 };
 
 static const struct of_device_id video_cc_sm8450_match_table[] = {
@@ -434,23 +451,6 @@  MODULE_DEVICE_TABLE(of, video_cc_sm8450_match_table);
 
 static int video_cc_sm8450_probe(struct platform_device *pdev)
 {
-	struct regmap *regmap;
-	int ret;
-
-	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_sm8450_desc);
-	if (IS_ERR(regmap)) {
-		pm_runtime_put(&pdev->dev);
-		return PTR_ERR(regmap);
-	}
-
 	if (of_device_is_compatible(pdev->dev.of_node, "qcom,sm8475-videocc")) {
 		/* Update VideoCC PLL0 */
 		video_cc_pll0.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID_OLE];
@@ -458,23 +458,11 @@  static int video_cc_sm8450_probe(struct platform_device *pdev)
 		/* Update VideoCC PLL1 */
 		video_cc_pll1.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID_OLE];
 
-		clk_lucid_ole_pll_configure(&video_cc_pll0, regmap, &sm8475_video_cc_pll0_config);
-		clk_lucid_ole_pll_configure(&video_cc_pll1, regmap, &sm8475_video_cc_pll1_config);
-	} else {
-		clk_lucid_evo_pll_configure(&video_cc_pll0, regmap, &video_cc_pll0_config);
-		clk_lucid_evo_pll_configure(&video_cc_pll1, regmap, &video_cc_pll1_config);
+		video_cc_pll0.config = &sm8475_video_cc_pll0_config;
+		video_cc_pll1.config = &sm8475_video_cc_pll1_config;
 	}
 
-	/* Keep some clocks always-on */
-	qcom_branch_set_clk_en(regmap, 0x80e4); /* VIDEO_CC_AHB_CLK */
-	qcom_branch_set_clk_en(regmap, 0x8130); /* VIDEO_CC_SLEEP_CLK */
-	qcom_branch_set_clk_en(regmap, 0x8114); /* VIDEO_CC_XO_CLK */
-
-	ret = qcom_cc_really_probe(&pdev->dev, &video_cc_sm8450_desc, regmap);
-
-	pm_runtime_put(&pdev->dev);
-
-	return ret;
+	return qcom_cc_probe(pdev, &video_cc_sm8450_desc);
 }
 
 static struct platform_driver video_cc_sm8450_driver = {