[PATCH 0/3] drm/msm/hdmi: turn MSM8996 HDMI PHY into OF clock provider

[PATCH 0/3] drm/msm/hdmi: turn MSM8996 HDMI PHY into OF clock provider

[Dmitry Baryshkov]

On MSM8996 the HDMI PHY is the QMP PHY, it provides an HDMI PLL clock
used by the MMCC. Add support for providing this clock to the OF
framework by registerding the clock provider and adding #clock-cells
property to the DT node.

Dmitry Baryshkov (3):
  dt-bindings: phy: qcom,hdmi-phy-qmp: add clock-cells
  drm/msm/hdmi: make hdmi_phy_8996 OF clk provider
  arm64: dts: qcom: msm8996: add #clock-cells to the HDMI PHY node

 .../bindings/phy/qcom,hdmi-phy-qmp.yaml           |  4 ++++
 arch/arm64/boot/dts/qcom/msm8996.dtsi             |  2 ++
 drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c          | 15 ++++++++++-----
 3 files changed, 16 insertions(+), 5 deletions(-)

-- 
2.35.1


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[PATCH 1/3] dt-bindings: phy: qcom,hdmi-phy-qmp: add clock-cells

[Dmitry Baryshkov]

As the QMP HDMI PHY is a clock provider, add constant #clock-cells
property. For the compatibility with older DTs the property is not
marked as required.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 Documentation/devicetree/bindings/phy/qcom,hdmi-phy-qmp.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/phy/qcom,hdmi-phy-qmp.yaml b/Documentation/devicetree/bindings/phy/qcom,hdmi-phy-qmp.yaml
index eea2e02678ed..1ada0d9857c0 100644
--- a/Documentation/devicetree/bindings/phy/qcom,hdmi-phy-qmp.yaml
+++ b/Documentation/devicetree/bindings/phy/qcom,hdmi-phy-qmp.yaml
@@ -44,6 +44,9 @@ properties:
   vddio-supply:
     description: phandle to VDD I/O supply regulator
 
+  '#clock-cells':
+    const: 0
+
   '#phy-cells':
     const: 0
 
@@ -78,6 +81,7 @@ examples:
                <&gcc 214>;
       clock-names = "iface",
                     "ref";
+      #clock-cells = <0>;
       #phy-cells = <0>;
 
       vddio-supply = <&vreg_l12a_1p8>;
-- 
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[PATCH 2/3] drm/msm/hdmi: make hdmi_phy_8996 OF clk provider

[Dmitry Baryshkov]

On MSM8996 the HDMI PHY provides the PLL clock to the MMCC. As we are
preparing to convert the MSM8996 to use DT clocks properties (rather
than global clock names), register the OF clock provider.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c
index b06d9d25a189..cfb83e9dd810 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c
@@ -707,8 +707,7 @@ int msm_hdmi_pll_8996_init(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct hdmi_pll_8996 *pll;
-	struct clk *clk;
-	int i;
+	int i, ret;
 
 	pll = devm_kzalloc(dev, sizeof(*pll), GFP_KERNEL);
 	if (!pll)
@@ -735,10 +734,16 @@ int msm_hdmi_pll_8996_init(struct platform_device *pdev)
 	}
 	pll->clk_hw.init = &pll_init;
 
-	clk = devm_clk_register(dev, &pll->clk_hw);
-	if (IS_ERR(clk)) {
+	ret = devm_clk_hw_register(dev, &pll->clk_hw);
+	if (ret) {
 		DRM_DEV_ERROR(dev, "failed to register pll clock\n");
-		return -EINVAL;
+		return ret;
+	}
+
+	ret = devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get, &pll->clk_hw);
+	if (ret) {
+		DRM_DEV_ERROR(dev, "%s: failed to register clk provider: %d\n", __func__, ret);
+		return ret;
 	}
 
 	return 0;
-- 
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[PATCH 3/3] arm64: dts: qcom: msm8996: add #clock-cells to the HDMI PHY node

[Dmitry Baryshkov]

Add #clock-cells property to the HDMI PHY device node to let other nodes
resolve the hdmipll clock.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 arch/arm64/boot/dts/qcom/msm8996.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi
index 9932186f7ceb..f94f10947f26 100644
--- a/arch/arm64/boot/dts/qcom/msm8996.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8996.dtsi
@@ -964,6 +964,8 @@ hdmi_phy: hdmi-phy@9a0600 {
 				clock-names = "iface",
 					      "ref";
 
+				#clock-cells = <0>;
+
 				status = "disabled";
 			};
 		};
-- 
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Re: [PATCH 2/3] drm/msm/hdmi: make hdmi_phy_8996 OF clk provider

[Stephen Boyd]

Quoting Dmitry Baryshkov (2022-06-17 03:36:07)
> On MSM8996 the HDMI PHY provides the PLL clock to the MMCC. As we are
> preparing to convert the MSM8996 to use DT clocks properties (rather
> than global clock names), register the OF clock provider.
>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> ---

Reviewed-by: Stephen Boyd <swboyd@chromium.org>

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Re: [PATCH 3/3] arm64: dts: qcom: msm8996: add #clock-cells to the HDMI PHY node

[Stephen Boyd]

Quoting Dmitry Baryshkov (2022-06-17 03:36:08)
> Add #clock-cells property to the HDMI PHY device node to let other nodes
> resolve the hdmipll clock.
>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> ---

Reviewed-by: Stephen Boyd <swboyd@chromium.org>

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Re: [PATCH 1/3] dt-bindings: phy: qcom,hdmi-phy-qmp: add clock-cells

[Vinod Koul]

On 17-06-22, 13:36, Dmitry Baryshkov wrote:
> As the QMP HDMI PHY is a clock provider, add constant #clock-cells
> property. For the compatibility with older DTs the property is not
> marked as required.

Acked-By: Vinod Koul <vkoul@kernel.org>

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