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Date:   Wed, 11 Jan 2023 14:21:05 +0100
From:   Johan Hovold <johan@kernel.org>
To:     Bjorn Andersson <quic_bjorande@quicinc.com>
Cc:     Bjorn Andersson <andersson@kernel.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
        linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v7 1/4] arm64: dts: qcom: sc8280xp: Define some of the
 display blocks
Message-ID: <Y763wVbqHAEaBWBd@hovoldconsulting.com>
References: <20230111035906.2975494-1-quic_bjorande@quicinc.com>
 <20230111035906.2975494-2-quic_bjorande@quicinc.com>
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On Tue, Jan 10, 2023 at 07:59:03PM -0800, Bjorn Andersson wrote:
> From: Bjorn Andersson <bjorn.andersson@linaro.org>
> 
> Define the display clock controllers, the MDSS instances, the DP phys
> and connect these together.
> 
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
> ---
> 
> Changes since v6:
> - Dropped assigned-clock-rate on MDP_CLK
> - Rearranged the properties in all nodes
> 
>  arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 811 +++++++++++++++++++++++++
>  1 file changed, 811 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> index 0ea2f19d471b..2ed17baf50d3 100644
> --- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi

> +			mdss0_mdp: display-controller@ae01000 {
> +				compatible = "qcom,sc8280xp-dpu";
> +				reg = <0 0x0ae01000 0 0x8f000>,
> +				      <0 0x0aeb0000 0 0x2008>;
> +				reg-names = "mdp", "vbif";
> +
> +				clocks = <&gcc GCC_DISP_HF_AXI_CLK>,
> +					 <&gcc GCC_DISP_SF_AXI_CLK>,
> +					 <&dispcc0 DISP_CC_MDSS_AHB_CLK>,
> +					 <&dispcc0 DISP_CC_MDSS_MDP_LUT_CLK>,
> +					 <&dispcc0 DISP_CC_MDSS_MDP_CLK>,
> +					 <&dispcc0 DISP_CC_MDSS_VSYNC_CLK>;
> +				clock-names = "bus",
> +					      "nrt_bus",
> +					      "iface",
> +					      "lut",
> +					      "core",
> +					      "vsync";
> +				interrupt-parent = <&mdss0>;
> +				interrupts = <0>;
> +				power-domains = <&rpmhpd SC8280XP_MMCX>;
> +
> +				assigned-clocks = <&dispcc0 DISP_CC_MDSS_VSYNC_CLK>;
> +				assigned-clock-rates = <19200000>;

Nit: Shouldn't these come after the clock-names property as they did in
v5 so that the clock properties are grouped?

> +				operating-points-v2 = <&mdss0_mdp_opp_table>;
> +
> +				ports {
> +					#address-cells = <1>;
> +					#size-cells = <0>;
> +
> +					port@5 {
> +						reg = <5>;
> +						mdss0_intf5_out: endpoint {
> +							remote-endpoint = <&mdss0_dp3_in>;
> +						};
> +					};
> +
> +					port@6 {
> +						reg = <6>;
> +						mdss0_intf6_out: endpoint {
> +							remote-endpoint = <&mdss0_dp2_in>;
> +						};
> +					};
> +				};

> +			mdss0_dp2: displayport-controller@ae9a000 {
> +				compatible = "qcom,sc8280xp-dp";
> +				reg = <0 0xae9a000 0 0x200>,
> +				      <0 0xae9a200 0 0x200>,
> +				      <0 0xae9a400 0 0x600>,
> +				      <0 0xae9b000 0 0x400>;
> +
> +				clocks = <&dispcc0 DISP_CC_MDSS_AHB_CLK>,
> +					 <&dispcc0 DISP_CC_MDSS_DPTX2_AUX_CLK>,
> +					 <&dispcc0 DISP_CC_MDSS_DPTX2_LINK_CLK>,
> +					 <&dispcc0 DISP_CC_MDSS_DPTX2_LINK_INTF_CLK>,
> +					 <&dispcc0 DISP_CC_MDSS_DPTX2_PIXEL0_CLK>;
> +				clock-names = "core_iface", "core_aux",
> +					      "ctrl_link",
> +					      "ctrl_link_iface", "stream_pixel";
> +				interrupt-parent = <&mdss0>;
> +				interrupts = <14>;
> +				phys = <&mdss0_dp2_phy>;
> +				phy-names = "dp";
> +				power-domains = <&rpmhpd SC8280XP_MMCX>;
> +
> +				assigned-clocks = <&dispcc0 DISP_CC_MDSS_DPTX2_LINK_CLK_SRC>,
> +						  <&dispcc0 DISP_CC_MDSS_DPTX2_PIXEL0_CLK_SRC>;
> +				assigned-clock-parents = <&mdss0_dp2_phy 0>, <&mdss0_dp2_phy 1>;

Same here.

> +				operating-points-v2 = <&mdss0_dp2_opp_table>;
> +
> +				#sound-dai-cells = <0>;
> +
> +				status = "disabled";

> +			mdss0_dp3: displayport-controller@aea0000 {
> +				compatible = "qcom,sc8280xp-dp";
> +				reg = <0 0xaea0000 0 0x200>,
> +				      <0 0xaea0200 0 0x200>,
> +				      <0 0xaea0400 0 0x600>,
> +				      <0 0xaea1000 0 0x400>;
> +
> +				clocks = <&dispcc0 DISP_CC_MDSS_AHB_CLK>,
> +					 <&dispcc0 DISP_CC_MDSS_DPTX3_AUX_CLK>,
> +					 <&dispcc0 DISP_CC_MDSS_DPTX3_LINK_CLK>,
> +					 <&dispcc0 DISP_CC_MDSS_DPTX3_LINK_INTF_CLK>,
> +					 <&dispcc0 DISP_CC_MDSS_DPTX3_PIXEL0_CLK>;
> +				clock-names = "core_iface", "core_aux",
> +					      "ctrl_link",
> +					      "ctrl_link_iface", "stream_pixel";
> +				interrupt-parent = <&mdss0>;
> +				interrupts = <15>;
> +				phys = <&mdss0_dp3_phy>;
> +				phy-names = "dp";
> +				power-domains = <&dispcc0 MDSS_GDSC>;
> +
> +				assigned-clocks = <&dispcc0 DISP_CC_MDSS_DPTX3_LINK_CLK_SRC>,
> +						  <&dispcc0 DISP_CC_MDSS_DPTX3_PIXEL0_CLK_SRC>;
> +				assigned-clock-parents = <&mdss0_dp3_phy 0>, <&mdss0_dp3_phy 1>;

And here.

> +				operating-points-v2 = <&mdss0_dp3_opp_table>;
> +
> +				#sound-dai-cells = <0>;
> +
> +				status = "disabled";

> +		mdss1: display-subsystem@22000000 {
> +			compatible = "qcom,sc8280xp-mdss";
> +			reg = <0 0x22000000 0 0x1000>;
> +			reg-names = "mdss";
> +
> +			clocks = <&gcc GCC_DISP_AHB_CLK>,
> +				 <&dispcc1 DISP_CC_MDSS_AHB_CLK>,
> +				 <&dispcc1 DISP_CC_MDSS_MDP_CLK>;
> +			clock-names = "iface",
> +				      "ahb",
> +				      "core";
> +			interconnects = <&mmss_noc MASTER_MDP_CORE1_0 0 &mc_virt SLAVE_EBI1 0>,
> +					<&mmss_noc MASTER_MDP_CORE1_1 0 &mc_virt SLAVE_EBI1 0>;
> +			interconnect-names = "mdp0-mem", "mdp1-mem";
> +			interrupts = <GIC_SPI 865 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-controller;

This is a provider property so perhaps it should go before
'#interrupt-cells' as it did above?

> +
> +			iommus = <&apps_smmu 0x1800 0x402>;
> +			power-domains = <&dispcc1 MDSS_GDSC>;
> +			resets = <&dispcc1 DISP_CC_MDSS_CORE_BCR>;
> +
> +			#interrupt-cells = <1>;
> +			#address-cells = <2>;
> +			#size-cells = <2>;
> +			ranges;
> +
> +			status = "disabled";
> +
> +			mdss1_mdp: display-controller@22001000 {
> +				compatible = "qcom,sc8280xp-dpu";
> +				reg = <0 0x22001000 0 0x8f000>,
> +				      <0 0x220b0000 0 0x2008>;
> +				reg-names = "mdp", "vbif";
> +
> +				clocks = <&gcc GCC_DISP_HF_AXI_CLK>,
> +					 <&gcc GCC_DISP_SF_AXI_CLK>,
> +					 <&dispcc1 DISP_CC_MDSS_AHB_CLK>,
> +					 <&dispcc1 DISP_CC_MDSS_MDP_LUT_CLK>,
> +					 <&dispcc1 DISP_CC_MDSS_MDP_CLK>,
> +					 <&dispcc1 DISP_CC_MDSS_VSYNC_CLK>;
> +				clock-names = "bus",
> +					      "nrt_bus",
> +					      "iface",
> +					      "lut",
> +					      "core",
> +					      "vsync";
> +				interrupt-parent = <&mdss1>;
> +				interrupts = <0>;
> +				power-domains = <&rpmhpd SC8280XP_MMCX>;
> +
> +				assigned-clocks = <&dispcc1 DISP_CC_MDSS_VSYNC_CLK>;
> +				assigned-clock-rates = <19200000>;

Move after 'clock-names'?

There are a few more instances like this below.

Johan