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SubjectRe: [PATCH 2/2] arm64: dts: qcom: Add base qrb4210-rb2 board dts
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On 3/15/23 2:55 AM, Konrad Dybcio wrote:
>
>
> On 14.03.2023 22:08, 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@linaro.org>
>> ---
> [...]
>
>> +#include <dt-bindings/regulator/qcom,rpmh-regulator.h>
> This SoC does not feature RPMh, drop.

Ok.

>> +#include "sm4250.dtsi"
>> +
>> +/ {
>> + model = "Qualcomm Technologies, Inc. QRB4210 RB2";
>> + compatible = "qcom,qrb4210-rb2", "qcom,sm4250";
> Please add a qcom,qrb4210 between the board-specific and the common SoC
> compatibles so that we can address QRB-specific quirks if such ever arise.

As per the available documentation there are no qrb specific quirks as
of now, but let me add a qcom,qrb4210 for future compatibility.

>> +
>> + aliases {
>> + serial0 = &uart4;
>> + };
>> +
> [...]
>
>> +&xo_board {
>> + clock-frequency = <19200000>;
>> +};
>> +
>> +&sleep_clk {
>> + clock-frequency = <32000>;
>> +};
> Out of alphanumerical order

Ok.

>> +
>> +&qupv3_id_0 {
>> + status = "okay";
>> +};
>> +
>> +&uart4 {
>> + status = "okay";
>> +};
>> +
>> +&rpm_requests {
> Out of alphanumerical order

Ok.

>> + regulators-0 {
> Will there be more PMICs under this node? If not, drop the -0.

Ok.

> [...]
>
>> +&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>;
>> +};
> Are there *really* so many? Does the board refuse to boot if
> you knock off any of these entries? If so, they probably
> don't belong here.

Yes, these are reserved / not-connected gpios as per latest version of
the board schematics.

>> +
>> +&sdhc_1 {
>> + status = "okay";
> Status should go last
>> +
>> + vmmc-supply = <&vreg_l24a_2p96>; /* emmc power line */
>> + vqmmc-supply = <&vreg_l11a_1p8>; /* emmc vddq */
> The comments are not very useful, drop please.
>
>> + bus-width = <8>;
> This is defined in the SoC dtsi already

Ok.

>> + no-sdio;
>> + non-removable;
>> +};
>> +
>> +&sdhc_2 {
>> + status = "okay";
>> +
>> + cd-gpios = <&tlmm 88 GPIO_ACTIVE_HIGH>; /* card detect gpio */
>> + vmmc-supply = <&vreg_l22a_2p96>; /* Card power line */
>> + vqmmc-supply = <&vreg_l5a_2p96>; /* IO line power */
>> + bus-width = <4>;
>> + no-sdio;
>> + no-emmc;
> Ditto

Ok. Will send updated v2 soon.

Thanks.

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