Re: [PATCH V2] arm64: dts: qcom: sc7280: Enable gcc HW reset

Bjorn Andersson
2022-03-11T03:54:07Z

On Thu 10 Mar 06:45 PST 2022, Shaik Sajida Bhanu wrote:

Without looking at what Krzysztof suggested, I think $subject should
reflect the fact that it's the reset of the two SDCC controllers that
you're adding.

Something like "arm64: dts:qcom: Add resets for SDCC controllers" would allow me to grasp the full
purpose of the patch by only reading the subject.

> Enable gcc HW reset for eMMC and SD card.
>
> Signed-off-by: Shaik Sajida Bhanu <quic_c_sbhanu@quicinc.com>
> ---
>
> Changes since V1:
> - Updated commit message, subject and comments in dtsi file as
> suggested by Krzysztof Kozlowski.
> ---
> arch/arm64/boot/dts/qcom/sc7280.dtsi | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index c07765d..721abf5 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -881,6 +881,9 @@
> mmc-hs400-1_8v;
> mmc-hs400-enhanced-strobe;
>
> + /* Add gcc hw reset dt entry for eMMC */

When you read this comment 2 weeks from now it won't add any value.

> + resets = <&gcc GCC_SDCC1_BCR>;
> + reset-names = "core_reset";

Doesn't seem that this binding has been converted to YAML, but the .txt
binding doesn't mention "resets" and I don't see a reason for having a
reset-names for a single reset.

And please keep the empty line before the opp-table.

Regards,
Bjorn

> sdhc1_opp_table: opp-table {
> compatible = "operating-points-v2";
>
> @@ -2686,6 +2689,9 @@
>
> qcom,dll-config = <0x0007642c>;
>
> + /* Add gcc hw reset dt entry for SD card */
> + resets = <&gcc GCC_SDCC2_BCR>;
> + reset-names = "core_reset";
> sdhc2_opp_table: opp-table {
> compatible = "operating-points-v2";
>
> --
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>