Re: [PATCH v4 1/2] dt-bindings: mmc: snps,dwcmshc-sdhci: add HPE GSC dwcmshc compatible
From: Krzysztof Kozlowski
Date: Tue Mar 17 2026 - 03:19:16 EST
On Mon, Mar 16, 2026 at 10:01:14AM -0500, nick.hawkins@xxxxxxx wrote:
> From: Nick Hawkins <nick.hawkins@xxxxxxx>
>
> Add the 'hpe,gsc-dwcmshc' compatible string for the HPE GSC (ARM64
> Cortex-A53) BMC SoC eMMC controller.
>
> The HPE GSC requires access to the MSHCCS register in the SoC system
> register block to configure SCG sync disable for HS200 RX delay-line
> phase selection. The required 'hpe,gxp-sysreg' property takes a
> phandle to the existing 'hpe,gxp-sysreg' syscon and the MSHCCS
> register offset within that block.
>
> The HPE GSC eMMC interface only exposes a single 'core' clock (no
> bus clock), so clocks/clock-names are constrained to a single item.
>
> Signed-off-by: Nick Hawkins <nick.hawkins@xxxxxxx>
> ---
> .../bindings/mmc/snps,dwcmshc-sdhci.yaml | 32 +++++++++++++++++++
> 1 file changed, 32 insertions(+)
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxxxxx>
Best regards,
Krzysztof