Re: [PATCH v2 2/4] arm64: dts: qcom: msm8976: Add MDSS nodes

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On Mon, Apr 01, 2024 at 07:21:51PM +0200, Adam Skladowski wrote:
> diff --git a/arch/arm64/boot/dts/qcom/msm8976.dtsi b/arch/arm64/boot/dts/qcom/msm8976.dtsi
[..]
> +		mdss: display-subsystem@1a00000 {
[..]
> +			mdss_dsi0: dsi@1a94000 {
> +				compatible = "qcom,msm8976-dsi-ctrl", "qcom,mdss-dsi-ctrl";
> +				reg = <0x01a94000 0x25c>;
> +				reg-names = "dsi_ctrl";
> +
> +				interrupt-parent = <&mdss>;
> +				interrupts = <4>;
> +
> +				clocks = <&gcc GCC_MDSS_MDP_CLK>,
> +					 <&gcc GCC_MDSS_AHB_CLK>,
> +					 <&gcc GCC_MDSS_AXI_CLK>,
> +					 <&gcc GCC_MDSS_BYTE0_CLK>,
> +					 <&gcc GCC_MDSS_PCLK0_CLK>,
> +					 <&gcc GCC_MDSS_ESC0_CLK>;
> +				clock-names = "mdp_core",
> +					      "iface",
> +					      "bus",
> +					      "byte",
> +					      "pixel",
> +					      "core";
> +
> +				assigned-clocks = <&gcc GCC_MDSS_BYTE0_CLK_SRC>,
> +						  <&gcc GCC_MDSS_PCLK0_CLK_SRC>;
> +				assigned-clock-parents = <&mdss_dsi0_phy 0>,
> +							 <&mdss_dsi0_phy 1>;
> +
> +				phys = <&mdss_dsi0_phy>;
> +
> +				operating-points-v2 = <&dsi0_opp_table>;
> +				power-domains = <&gcc MDSS_GDSC>;
> +
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +

Seems reasonable to keep this disabled as well. Further more &mdss_dsi0
depends on &mdss_dsi0_phy which is disabled.

> +				ports {
[..]
> +			mdss_dsi0_phy: phy@1a94a00 {
> +				compatible = "qcom,dsi-phy-28nm-hpm-fam-b";
> +				reg = <0x01a94a00 0xd4>,
> +				      <0x01a94400 0x280>,
> +				      <0x01a94b80 0x30>;
> +				reg-names = "dsi_pll",
> +					    "dsi_phy",
> +					    "dsi_phy_regulator";
> +
> +				#clock-cells = <1>;
> +				#phy-cells = <0>;
> +
> +				clocks = <&gcc GCC_MDSS_AHB_CLK>,
> +					 <&rpmcc RPM_SMD_XO_CLK_SRC>;
> +				clock-names = "iface", "ref";
> +
> +				status = "disabled";
> +			};

PS. Leave &mdss_mdp enabled...

Regards,
Bjorn




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