linux-kernel - Re: [PATCH v1 3/4] arm64: dts: qcom: qcs615: add UFS node

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Message-ID: <5fe37609-ed58-4617-bd5f-90edc90f5d8b@oss.qualcomm.com>
Date: Fri, 25 Oct 2024 21:24:46 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Xin Liu <quic_liuxin@...cinc.com>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
Cc: Vinod Koul <vkoul@...nel.org>, Kishon Vijay Abraham I
 <kishon@...nel.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        Bart Van Assche <bvanassche@....org>, Andy Gross <agross@...nel.org>,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-scsi@...r.kernel.org, quic_jiegan@...cinc.com,
        quic_aiquny@...cinc.com, quic_tingweiz@...cinc.com,
        quic_sayalil@...cinc.com
Subject: Re: [PATCH v1 3/4] arm64: dts: qcom: qcs615: add UFS node

On 17.10.2024 6:22 AM, Xin Liu wrote:
> From: Sayali Lokhande <quic_sayalil@...cinc.com>	
> 	
> Add the UFS Host Controller node and its PHY for QCS615 SoC.
> 
> Signed-off-by: Sayali Lokhande <quic_sayalil@...cinc.com>
> Co-developed-by: Xin Liu <quic_liuxin@...cinc.com>
> Signed-off-by: Xin Liu <quic_liuxin@...cinc.com>
> ---

+ Taniya (see below)

>  arch/arm64/boot/dts/qcom/qcs615.dtsi | 74 ++++++++++++++++++++++++++++
>  1 file changed, 74 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcs615.dtsi b/arch/arm64/boot/dts/qcom/qcs615.dtsi
> index fcba83fca7cf..689418466dc2 100644
> --- a/arch/arm64/boot/dts/qcom/qcs615.dtsi
> +++ b/arch/arm64/boot/dts/qcom/qcs615.dtsi
> @@ -458,6 +458,80 @@ mmss_noc: interconnect@...0000 {
>  			qcom,bcm-voters = <&apps_bcm_voter>;
>  		};
>  
> +		ufs_mem_hc: ufs@...4000 {

ufshc@ would be consistent with other files in dts/qcom


> +			compatible = "qcom,qcs615-ufshc", "qcom,ufshc", "jedec,ufs-2.0";
> +			reg = <0x0 0x01d84000 0x0 0x3000>, <0x0 0x01d90000 0x0 0x8000>;
> +			reg-names = "std", "ice";

One per line, please

> +			interrupts = <GIC_SPI 265 IRQ_TYPE_LEVEL_HIGH>;
> +			phys = <&ufs_mem_phy>;
> +			phy-names = "ufsphy";
> +			lanes-per-direction = <1>;
> +			#reset-cells = <1>;
> +			resets = <&gcc GCC_UFS_PHY_BCR>;
> +			reset-names = "rst";
> +
> +			power-domains = <&gcc UFS_PHY_GDSC>;
> +			required-opps = <&rpmhpd_opp_nom>;
> +
> +			iommus = <&apps_smmu 0x300 0x0>;
> +			dma-coherent;
> +
> +			interconnects = <&aggre1_noc MASTER_UFS_MEM QCOM_ICC_TAG_ALWAYS
> +					 &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>,
> +					<&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ALWAYS
> +					 &config_noc SLAVE_UFS_MEM_CFG QCOM_ICC_TAG_ALWAYS>;
> +			interconnect-names = "ufs-ddr",
> +					     "cpu-ufs";
> +
> +			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_ICE_CORE_CLK>;
> +			clock-names = "core_clk",
> +				      "bus_aggr_clk",
> +				      "iface_clk",
> +				      "core_clk_unipro",
> +				      "ref_clk",
> +				      "tx_lane0_sync_clk",
> +				      "rx_lane0_sync_clk",
> +				      "ice_core_clk";
> +			freq-table-hz = <50000000 200000000>,
> +					<0 0>,
> +					<0 0>,
> +					<37500000 150000000>,
> +					<0 0>,
> +					<0 0>,
> +					<0 0>,
> +					<75000000 300000000>;

Please try to match the order of properties present in sm8650.dtsi

And please use an OPP table instead of freq-table-hz (see sm8*5*50.dtsi)

> +
> +			status = "disabled";
> +		};
> +
> +		ufs_mem_phy: phy@...7000 {
> +			compatible = "qcom,qcs615-qmp-ufs-phy", "qcom,sm6115-qmp-ufs-phy";
> +			reg = <0x0 0x01d87000 0x0 0xe00>;

This register region is a bit longer

> +			clocks = <&rpmhcc RPMH_CXO_CLK>,
> +				 <&gcc GCC_UFS_PHY_PHY_AUX_CLK>,
> +				 <&gcc GCC_UFS_MEM_CLKREF_CLK>;
> +			clock-names = "ref",
> +				      "ref_aux",
> +				      "qref";
> +
> +			power-domains = <&gcc UFS_PHY_GDSC>;
> +
> +			resets = <&ufs_mem_hc 0>;
> +			reset-names = "ufsphy";
> +
> +			#clock-cells = <1>;

The PHY is a clock provider. Normally, it's a parent of
gcc_ufs_phy_[rt]x_symbol_n clocks.

Taniya, could you please wire that up in your patchset?

Konrad