linux-kernel - Re: [PATCH 4/5] arm64: dts: qcom: sm8750: Add UFS nodes for SM8750 SoC

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Message-ID: <vifyx2lcaq3lhani5ovmxxqsknhkx24ggbu7sxnulrxv4gxzsk@bvmk3znm2ivl>
Date: Tue, 14 Jan 2025 12:52:19 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Melody Olvera <quic_molvera@...cinc.com>
Cc: Vinod Koul <vkoul@...nel.org>, 
	Kishon Vijay Abraham I <kishon@...nel.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>, Alim Akhtar <alim.akhtar@...sung.com>, 
	Avri Altman <avri.altman@....com>, Bart Van Assche <bvanassche@....org>, 
	Bjorn Andersson <andersson@...nel.org>, Andy Gross <agross@...nel.org>, 
	Konrad Dybcio <konradybcio@...nel.org>, Satya Durga Srinivasu Prabhala <quic_satyap@...cinc.com>, 
	Trilok Soni <quic_tsoni@...cinc.com>, 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, 
	Nitin Rawat <quic_nitirawa@...cinc.com>, Manish Pandey <quic_mapa@...cinc.com>
Subject: Re: [PATCH 4/5] arm64: dts: qcom: sm8750: Add UFS nodes for SM8750
 SoC

On Mon, Jan 13, 2025 at 01:46:27PM -0800, Melody Olvera wrote:
> From: Nitin Rawat <quic_nitirawa@...cinc.com>
> 
> Add UFS host controller and PHY nodes for SM8750 SoC.
> 
> Co-developed-by: Manish Pandey <quic_mapa@...cinc.com>
> Signed-off-by: Manish Pandey <quic_mapa@...cinc.com>
> Signed-off-by: Nitin Rawat <quic_nitirawa@...cinc.com>
> Signed-off-by: Melody Olvera <quic_molvera@...cinc.com>
> ---
>  arch/arm64/boot/dts/qcom/sm8750.dtsi | 81 ++++++++++++++++++++++++++++++++++++
>  1 file changed, 81 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8750.dtsi b/arch/arm64/boot/dts/qcom/sm8750.dtsi
> index 3bbd7d18598ee0a3a0d5130c03a3166e1fc14d82..20690c102244b337847a6482dd83c37e19746de9 100644
> --- a/arch/arm64/boot/dts/qcom/sm8750.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8750.dtsi
> @@ -13,6 +13,7 @@
>  #include <dt-bindings/power/qcom,rpmhpd.h>
>  #include <dt-bindings/power/qcom-rpmpd.h>
>  #include <dt-bindings/soc/qcom,rpmh-rsc.h>
> +#include <dt-bindings/gpio/gpio.h>
>  
>  / {
>  	interrupt-parent = <&intc>;
> @@ -1939,6 +1940,86 @@ mmss_noc: interconnect@...0000 {
>  			#interconnect-cells = <2>;
>  		};
>  
> +		ufs_mem_phy: phy@...0000 {
> +			compatible = "qcom,sm8750-qmp-ufs-phy";
> +			reg = <0x0 0x01d80000 0x0 0x2000>;
> +
> +			clocks = <&rpmhcc RPMH_CXO_CLK>,
> +				 <&gcc GCC_UFS_PHY_PHY_AUX_CLK>,
> +				 <&tcsrcc TCSR_UFS_CLKREF_EN>;
> +			clock-names =	"ref",
> +					"ref_aux",
> +					"qref";
> +
> +			resets = <&ufs_mem_hc 0>;
> +			reset-names = "ufsphy";
> +
> +			power-domains = <&gcc GCC_UFS_MEM_PHY_GDSC>;
> +
> +			#clock-cells = <1>;
> +			#phy-cells = <0>;
> +
> +			status = "disabled";
> +		};
> +
> +		ufs_mem_hc: ufs@...4000 {
> +			compatible = "qcom,sm8750-ufshc", "qcom,ufshc", "jedec,ufs-2.0";
> +			reg = <0x0 0x01d84000 0x0 0x3000>;
> +
> +			interrupts = <GIC_SPI 265 IRQ_TYPE_LEVEL_HIGH>;
> +
> +			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_LN_BB_CLK3>,
> +				 <&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 = <100000000 403000000>,
> +					<0 0>,
> +					<0 0>,
> +					<100000000 403000000>,
> +					<100000000 403000000>,
> +					<0 0>,
> +					<0 0>,
> +					<0 0>;

Use OPP table instead

> +
> +			resets = <&gcc GCC_UFS_PHY_BCR>;
> +			reset-names = "rst";
> +
> +
> +			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>;

Shouldn't cpu-ufs be ACTIVE_ONLY?

> +			interconnect-names = "ufs-ddr",
> +					     "cpu-ufs";
> +
> +			power-domains = <&gcc GCC_UFS_PHY_GDSC>;
> +			required-opps = <&rpmhpd_opp_nom>;
> +
> +			iommus = <&apps_smmu 0x60 0>;
> +			dma-coherent;
> +
> +			lanes-per-direction = <2>;
> +
> +			phys = <&ufs_mem_phy>;
> +			phy-names = "ufsphy";
> +
> +			#reset-cells = <1>;
> +
> +			status = "disabled";
> +		};
> +
>  		tcsr_mutex: hwlock@...0000 {
>  			compatible = "qcom,tcsr-mutex";
>  			reg = <0x0 0x01f40000 0x0 0x20000>;
> 
> -- 
> 2.46.1
> 

-- 
With best wishes
Dmitry