linux-kernel - Re: [PATCH v3 1/2] arm64: dts: qcom: x1e80100: Add more support

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Message-ID: <7d90a4d3-9108-44e3-8398-ba1ac2b599ca@linaro.org>
Date: Fri, 15 Dec 2023 00:33:56 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Abel Vesa <abel.vesa@...aro.org>, Andy Gross <agross@...nel.org>,
 Bjorn Andersson <andersson@...nel.org>, Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, Rajendra Nayak <quic_rjendra@...cinc.com>
Subject: Re: [PATCH v3 1/2] arm64: dts: qcom: x1e80100: Add more support



On 12/14/23 23:48, Abel Vesa wrote:
> Add nodes for the following:
> - ADSP and CDSP
> - IPCC
> - USB SubSys 0, 1 and 2 (along with the PHYs)
> - PCIe 4 and 6 and related PHYs
> - DISP, GPU, TCSR and CAM clock controllers
> - AOSS QMP
> - Display controllers (along with the PHYs)
> 
> Co-developed-by: Rajendra Nayak <quic_rjendra@...cinc.com>
> Signed-off-by: Rajendra Nayak <quic_rjendra@...cinc.com>
> Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
> ---
[...]

> +
> +			interrupts-extended = <&intc GIC_SPI 370 IRQ_TYPE_LEVEL_HIGH>,
> +					      <&pdc 10 IRQ_TYPE_EDGE_RISING>,
> +					      <&pdc 57 IRQ_TYPE_EDGE_RISING>,
> +					      <&pdc 58 IRQ_TYPE_LEVEL_HIGH>;
the interrupt types seem wrong (ss vs dp/dm lvl vs edge, looks like a
cut-n-paste reordering mistake)

btw the edge-triggered ones should be _BOTH, see Johan's
recent treewide cleanups
[...]

> +			usb_2_dwc3: usb@...0000 {
> +				compatible = "snps,dwc3";
> +				reg = <0 0x0a200000 0 0xcd00>;
> +				interrupts = <GIC_SPI 241 IRQ_TYPE_LEVEL_HIGH>;
> +				iommus = <&apps_smmu 0x14e0 0x0>;
> +				phys = <&usb_2_hsphy>;
> +				phy-names = "usb2-phy";
maximum-speed = "high-speed"

would be fitting here as well
[...]

> +			interrupts-extended = <&intc GIC_SPI 371 IRQ_TYPE_LEVEL_HIGH>,
> +					      <&pdc 17 IRQ_TYPE_LEVEL_HIGH>,
> +					      <&pdc 15 IRQ_TYPE_EDGE_RISING>,
> +					      <&pdc 61 IRQ_TYPE_EDGE_RISING>;
edges
[...]

> +			interrupts-extended = <&intc GIC_SPI 372 IRQ_TYPE_LEVEL_HIGH>,
> +					      <&pdc 47 IRQ_TYPE_LEVEL_HIGH>,
> +					      <&pdc 11 IRQ_TYPE_EDGE_RISING>,
> +					      <&pdc 60 IRQ_TYPE_EDGE_RISING>;
edges
[...]

> +		mdss: display-subsystem@...0000 {
> +			compatible = "qcom,x1e80100-mdss";
> +			reg = <0 0x0ae00000 0 0x1000>;
> +			reg-names = "mdss";
> +
> +			interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
> +
> +			clocks = <&dispcc DISP_CC_MDSS_AHB_CLK>,
> +				 <&gcc GCC_DISP_AHB_CLK>,
> +				 <&gcc GCC_DISP_HF_AXI_CLK>,
> +				 <&dispcc DISP_CC_MDSS_MDP_CLK>;
no -names?

> +
> +			assigned-clocks = <&dispcc DISP_CC_MDSS_MDP_CLK_SRC>;
> +			assigned-clock-parents = <&dispcc DISP_CC_PLL0>;
raised eyebrow emoji - why would this be necessary?

> +
> +			resets = <&dispcc DISP_CC_MDSS_CORE_BCR>;
> +
> +			interconnects = <&mmss_noc MASTER_MDP 0 &gem_noc SLAVE_LLCC 0>,
QCOM_ICC_TAG_ALWAYS

[...]

> +				assigned-clocks = <&dispcc DISP_CC_MDSS_VSYNC_CLK>;
> +				assigned-clock-rates = <19200000>;
I was wondering why we keep copypasting this.. the clk driver only
support this single frequency, can it be dropped?

[...]

> +					opp-514000000 {
> +						opp-hz = /bits/ 64 <514000000>;
> +						required-opps = <&rpmhpd_opp_nom>;
> +					};
Is there no 575MHz level?

[...]

> +		dispcc: clock-controller@...0000 {
> +			compatible = "qcom,x1e80100-dispcc";
> +			reg = <0 0x0af00000 0 0x20000>;
> +			clocks = <&bi_tcxo_div2>,
> +				 <&bi_tcxo_ao_div2>,
> +				 <&gcc GCC_DISP_AHB_CLK>,
> +				 <&sleep_clk>,
> +				 <0>, /* dsi0 */
> +				 <0>,
> +				 <0>, /* dsi1 */
> +				 <0>,
> +				 <&usb_1_ss0_qmpphy QMP_USB43DP_DP_LINK_CLK>, /* dp0 */
> +				 <&usb_1_ss0_qmpphy QMP_USB43DP_DP_VCO_DIV_CLK>, /* dp0 */
> +				 <0>, /* dp1 */
> +				 <0>,
> +				 <0>, /* dp2 */
should these not be filled out as well?

usb1_ss1_qmpphy

and

mdss_dp2_phy

respectively, I think?

> +				 <0>,
> +				 <&mdss_dp3_phy 0>, /* dp3 */
> +				 <&mdss_dp3_phy 1>;
> +			power-domains = <&rpmhpd RPMHPD_MMCX>;
> +			#clock-cells = <1>;
> +			#reset-cells = <1>;
> +			#power-domain-cells = <1>;
> +		};
[...]

> +
> +			interrupts-extended = <&pdc 6 IRQ_TYPE_EDGE_RISING>,
> +					      <&smp2p_adsp_in 0 IRQ_TYPE_EDGE_RISING>,
> +					      <&smp2p_adsp_in 1 IRQ_TYPE_EDGE_RISING>,
> +					      <&smp2p_adsp_in 2 IRQ_TYPE_EDGE_RISING>,
> +					      <&smp2p_adsp_in 3 IRQ_TYPE_EDGE_RISING>;
> +			interrupt-names = "wdog", "fatal", "ready",
> +					  "handover", "stop-ack";
One a line? :(


Konrad