linux-kernel - Re: [PATCH V3 2/4] arm64: dts: qcom: sc7280: Add UFS nodes for sc7280 soc

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Message-Id: <CVVA1OVF4W9E.380D6QC1K9GD6@otso>
Date:   Fri, 29 Sep 2023 11:01:00 +0200
From:   "Luca Weiss" <luca.weiss@...rphone.com>
To:     "Nitin Rawat" <quic_nitirawa@...cinc.com>, <agross@...nel.org>,
        <andersson@...nel.org>, <konrad.dybcio@...aro.org>,
        <mani@...nel.org>, <alim.akhtar@...sung.com>, <bvanassche@....org>,
        <avri.altman@....com>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <cros-qcom-dts-watchers@...omium.org>
Cc:     <linux-arm-msm@...r.kernel.org>, <linux-scsi@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: Re: [PATCH V3 2/4] arm64: dts: qcom: sc7280: Add UFS nodes for
 sc7280 soc

Hi Nitin,

On Wed Sep 27, 2023 at 10:18 AM CEST, Nitin Rawat wrote:
> Add UFS host controller and PHY nodes for sc7280 soc.
>
> Signed-off-by: Nitin Rawat <quic_nitirawa@...cinc.com>
> ---
>  arch/arm64/boot/dts/qcom/sc7280.dtsi | 63 ++++++++++++++++++++++++++++
>  1 file changed, 63 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index 66f1eb83cca7..0b50b8557311 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -3353,6 +3353,69 @@
>  			};
>  		};

I think above you should also have this diff:

--- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
@@ -868,11 +868,11 @@ gcc: clock-controller@...000 {
 			compatible = "qcom,gcc-sc7280";
 			reg = <0 0x00100000 0 0x1f0000>;
 			clocks = <&rpmhcc RPMH_CXO_CLK>,
 				 <&rpmhcc RPMH_CXO_CLK_A>, <&sleep_clk>,
 				 <0>, <&pcie1_lane>,
-				 <0>, <0>, <0>, <0>;
+				 <&ufs_mem_phy 0>, <&ufs_mem_phy 1>, <&ufs_mem_phy 2>, <0>;
 			clock-names = "bi_tcxo", "bi_tcxo_ao", "sleep_clk",
 				      "pcie_0_pipe_clk", "pcie_1_pipe_clk",
 				      "ufs_phy_rx_symbol_0_clk", "ufs_phy_rx_symbol_1_clk",
 				      "ufs_phy_tx_symbol_0_clk",
 				      "usb3_phy_wrapper_gcc_usb30_pipe_clk";

>
> +		ufs_mem_hc: ufs@...4000 {
> +			compatible = "qcom,sc7280-ufshc", "qcom,ufshc",
> +				     "jedec,ufs-2.0";
> +			reg = <0x0 0x01d84000 0x0 0x3000>;
> +			interrupts = <GIC_SPI 265 IRQ_TYPE_LEVEL_HIGH>;
> +			phys = <&ufs_mem_phy>;
> +			phy-names = "ufsphy";
> +			lanes-per-direction = <2>;
> +			#reset-cells = <1>;
> +			resets = <&gcc GCC_UFS_PHY_BCR>;
> +			reset-names = "rst";
> +
> +			power-domains = <&gcc GCC_UFS_PHY_GDSC>;
> +			required-opps = <&rpmhpd_opp_nom>;
> +
> +			iommus = <&apps_smmu 0x80 0x0>;
> +			dma-coherent;
> +
> +			clocks = <&gcc GCC_UFS_PHY_AXI_CLK>,
> +				 <&gcc GCC_AGGRE_UFS_PHY_AXI_CLK>,
> +				 <&gcc GCC_UFS_PHY_AHB_CLK>,
> +				 <&gcc GCC_UFS_PHY_UNIPRO_CORE_CLK>,
> +				 <&rpmhcc RPMH_CXO_CLK>,
> +				 <&gcc GCC_UFS_PHY_TX_SYMBOL_0_CLK>,
> +				 <&gcc GCC_UFS_PHY_RX_SYMBOL_0_CLK>,
> +				 <&gcc GCC_UFS_PHY_RX_SYMBOL_1_CLK>;
> +			clock-names = "core_clk",
> +				      "bus_aggr_clk",
> +				      "iface_clk",
> +				      "core_clk_unipro",
> +				      "ref_clk",
> +				      "tx_lane0_sync_clk",
> +				      "rx_lane0_sync_clk",
> +				      "rx_lane1_sync_clk";
> +			freq-table-hz =
> +				<75000000 300000000>,
> +				<0 0>,
> +				<0 0>,
> +				<75000000 300000000>,
> +				<0 0>,
> +				<0 0>,
> +				<0 0>,
> +				<0 0>;
> +			status = "disabled";
> +		};
> +
> +		ufs_mem_phy: phy@...7000 {
> +			compatible = "qcom,sc7280-qmp-ufs-phy";
> +			reg = <0x0 0x01d87000 0x0 0xe00>;
> +			clocks = <&rpmhcc RPMH_CXO_CLK>,
> +				 <&gcc GCC_UFS_PHY_PHY_AUX_CLK>,
> +				 <&gcc GCC_UFS_1_CLKREF_EN>;
> +			clock-names = "ref", "ref_aux", "qref";
> +
> +			resets = <&ufs_mem_hc 0>;
> +			reset-names = "ufsphy";
> +
> +			#clock-cells = <1>;
> +			#phy-cells = <0>;
> +
> +			status = "disabled";
> +		};

Would you mind adding something like the following at the same time?

+		ice: crypto@...8000 {
+			compatible = "qcom,sc7280-inline-crypto-engine",
+				     "qcom,inline-crypto-engine";
+			reg = <0 0x01d88000 0 0x8000>;
+			clocks = <&gcc GCC_UFS_PHY_ICE_CORE_CLK>;
+		};


And then link it to the ufs_mem_hc node with qcom,ice = <&ice>; ?

Or add it in a followup patch, also fine with me.

Other than that, looks pretty similar to the nodes that I have in my own
tree which work fine for the most part.

Regards
Luca

> +
>  		usb_1_hsphy: phy@...3000 {
>  			compatible = "qcom,sc7280-usb-hs-phy",
>  				     "qcom,usb-snps-hs-7nm-phy";
> --
> 2.17.1