linux-kernel - Re: [PATCH v2 2/2] arm64: dts: qcom: Add base qrb4210-rb2 board dts

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Date:   Thu, 16 Mar 2023 00:52:10 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Bjorn Andersson <andersson@...nel.org>,
        Bhupesh Sharma <bhupesh.sharma@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        agross@...nel.org, linux-kernel@...r.kernel.org,
        bhupesh.linux@...il.com, robh+dt@...nel.org,
        krzysztof.kozlowski@...aro.org
Subject: Re: [PATCH v2 2/2] arm64: dts: qcom: Add base qrb4210-rb2 board dts



On 15.03.2023 23:36, Bjorn Andersson wrote:
> On Thu, Mar 16, 2023 at 02:31:45AM +0530, Bhupesh Sharma wrote:
>> Add DTS for Qualcomm qrb4210-rb2 board which uses SM4250 SoC.
>>
>> This adds debug uart, emmc, uSD and tlmm support along with
>> regulators found on this board.
>>
>> Also defines the 'xo_board' and 'sleep_clk' frequencies for
>> this board.
>>
>> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@...aro.org>
>> ---
[...]

>> +	vmmc-supply = <&vreg_l24a_2p96>;
> 
> Is there any reason why this platform doesn't require the vmmc supply to
> be driven to HPM? This has traditionally been coming back biting us
> through some stability issues later.
Do we even support HPM/LPM on SMD RPM?

Konrad
> 
> Regards,
> Bjorn
> 
>> +	vqmmc-supply = <&vreg_l11a_1p8>;
>> +	no-sdio;
>> +	non-removable;
>> +};
>> +
>> +&sdhc_2 {
>> +	status = "okay";
>> +
>> +	cd-gpios = <&tlmm 88 GPIO_ACTIVE_HIGH>; /* card detect gpio */
>> +	vmmc-supply = <&vreg_l22a_2p96>;
>> +	vqmmc-supply = <&vreg_l5a_2p96>;
>> +	no-sdio;
>> +};
>> +
>> +&sleep_clk {
>> +	clock-frequency = <32000>;
>> +};
>> +
>> +&tlmm {
>> +	gpio-reserved-ranges = <37 5>, <43 2>, <47 1>,
>> +			       <49 1>, <52 1>, <54 1>,
>> +			       <56 3>, <61 2>, <64 1>,
>> +			       <68 1>, <72 8>, <96 1>;
>> +};
>> +
>> +&uart4 {
>> +	status = "okay";
>> +};
>> +
>> +&xo_board {
>> +	clock-frequency = <19200000>;
>> +};
>> -- 
>> 2.38.1
>>