linux-kernel - Re: [PATCH] arm64: dts: qcom: qcs6490-rb3gen2: Enable UFS

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Date: Tue, 26 Mar 2024 21:47:01 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Bjorn Andersson <quic_bjorande@...cinc.com>,
 Bjorn Andersson <andersson@...nel.org>, Rob Herring <robh@...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
Subject: Re: [PATCH] arm64: dts: qcom: qcs6490-rb3gen2: Enable UFS

On 26.03.2024 7:02 PM, Bjorn Andersson wrote:
> The rb3gen2 has UFS memory, adjust the necessary supply voltage and add
> the controller and phy nodes to enable this.
> 
> Signed-off-by: Bjorn Andersson <quic_bjorande@...cinc.com>
> ---
>  arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 23 +++++++++++++++++++++--
>  1 file changed, 21 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> index 63ebe0774f1d..0177d93ecd1d 100644
> --- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> @@ -221,8 +221,8 @@ vreg_l6b_1p2: ldo6 {
>  
>  		vreg_l7b_2p952: ldo7 {
>  			regulator-name = "vreg_l7b_2p952";
> -			regulator-min-microvolt = <2400000>;
> -			regulator-max-microvolt = <3544000>;
> +			regulator-min-microvolt = <2952000>;
> +			regulator-max-microvolt = <2952000>;
>  			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
>  		};
>  
> @@ -508,6 +508,25 @@ &usb_1_qmpphy {
>  	status = "okay";
>  };
>  
> +&ufs_mem_hc {
> +	reset-gpios = <&tlmm 175 GPIO_ACTIVE_LOW>;
> +	vcc-supply = <&vreg_l7b_2p952>;
> +	vcc-max-microamp = <800000>;
> +	vccq-supply = <&vreg_l9b_1p2>;
> +	vccq-max-microamp = <900000>;
> +	vccq2-supply = <&vreg_l9b_1p2>;
> +	vccq2-max-microamp = <900000>;

This probably requires adding supported modes and allow-set-mode to
these regs


Konrad