Re: [PATCH 4/6] arm64: dts: qcom: qcs6490-rb3gen2: Enable IMX577 camera sensor

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On 28/06/2024 19:32, Vikram Sharma wrote:
Enable IMX577 camera sensor for qcs6490-rb3gen2.

Signed-off-by: Hariram Purushothaman <quic_hariramp@xxxxxxxxxxx>
Signed-off-by: Vikram Sharma <quic_vikramsa@xxxxxxxxxxx>
---
  arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 67 ++++++++++++++++++++++++++++
  1 file changed, 67 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
index c4cde4328e3d..237231600dca 100644
--- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
+++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts

I believe the rb3gen2 can be sold with and without the camera mezzanine [1], so the approach we have taken for a similar situation on rb5 was to have a separate mezzanine dts which includes the baseboard and extends it.


arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
arch/arm64/boot/dts/qcom/qrb5165-rb5-vision-mezzanine.dts

Please replicate that model here.

[1] https://www.thundercomm.com/product/qualcomm-rb3-gen-2/#versions

@@ -513,6 +513,73 @@ vreg_bob_3p296: bob {
  	};
  };
+&camcc {
+	status = "okay";
+};
+
+&camss {
+	status = "disabled";

once you move this into its own dts the camera should be enabled by default for that .dtb

+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		/* The port index denotes CSIPHY id i.e. csiphy2 */
+		port@3 {
+			reg = <3>;

copy/past splat from the rb5

port@3 means csiphy3

+			csiphy3_ep: endpoint {
+				clock-lanes = <7>;
+				data-lanes = <0 1 2 3>;
+				remote-endpoint = <&imx412_ep>;
+			};
+		};
+	};
+};
+
+&cci0 {
+	status = "okay";
+};

You're enabling cci0 here but not the sensor for it - presumably a monochrome sensor attached to one of the other CSIPHYs.

Zap cci0 here until you add that other sensor.

+
+&cci1 {
+	status = "okay";
+};
+
+&cci1_i2c1 {
+	camera@1a {
+		/*
+		 * rb3gen2 ships with an imx577. qcom treats imx412
+		 * and imx577 the same way. Absent better data do the same here.
+		 */
+		compatible = "sony,imx412";
+		reg = <0x1a>;

The commit log says imx577 but the comapt string says imx412.

Choose which one and maintain the namespace. Its an imx577 right ? Upstream kernel has the relevant compat string

Commit: 1251663220d9 ("media: i2c: imx412: Add new compatible strings")

You can just cherry-pick that commit to your kernel and then the upstream dts and downstream dts will be compatible.


+
+		reset-gpios = <&tlmm 78 GPIO_ACTIVE_LOW>;
+		pinctrl-names = "default", "suspend";
+		pinctrl-0 = <&cam2_default>;
+		pinctrl-1 = <&cam2_suspend>;
+
+		clocks = <&camcc CAM_CC_MCLK3_CLK>,
+				 <&camcc CAM_CC_MCLK2_CLK>;
+		assigned-clocks = <&camcc CAM_CC_MCLK3_CLK>,
+				 <&camcc CAM_CC_MCLK2_CLK>;

This looks funny - why do you have MCLK2 ?

One final thing, you appear to be missing some power rails here no ?

e.g. rb5

        vdda-phy-supply = <&vreg_l5a_0p88>;
        vdda-pll-supply = <&vreg_l9a_1p2>;

---
bod




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