Re: [PATCH V1 1/7] dt-bindings: mmc: Add information for DLL register properties

[sartgarg]

On 2020-05-15 08:20, Rob Herring wrote:
> On Thu, May 07, 2020 at 01:32:08PM +0530, Sarthak Garg wrote:
> > Add information regarding DLL register properties for getting target
> > specific configurations. These DLL register settings may vary from
> > target to target.
> >
> > Also new compatible string value for sm8250 target.
> >
> > Signed-off-by: Sarthak Garg <sartgarg@xxxxxxxxxxxxxx>
> > ---
> >  Documentation/devicetree/bindings/mmc/sdhci-msm.txt | 14 
> > ++++++++++++++
> >  1 file changed, 14 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt 
> > b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
> > index 5445931..b8e1d2b 100644
> > --- a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
> > +++ b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
> > @@ -17,6 +17,7 @@ Required properties:
> >  		"qcom,msm8916-sdhci", "qcom,sdhci-msm-v4"
> >  		"qcom,msm8992-sdhci", "qcom,sdhci-msm-v4"
> >  		"qcom,msm8996-sdhci", "qcom,sdhci-msm-v4"
> > +		"qcom,sm8250-sdhci", "qcom,sdhci-msm-v5"
> >  		"qcom,sdm845-sdhci", "qcom,sdhci-msm-v5"
> >  		"qcom,qcs404-sdhci", "qcom,sdhci-msm-v5"
> >  		"qcom,sc7180-sdhci", "qcom,sdhci-msm-v5";
> > @@ -46,6 +47,13 @@ Required properties:
> >  	"cal"	- reference clock for RCLK delay calibration (optional)
> >  	"sleep"	- sleep clock for RCLK delay calibration (optional)
> >
> > +- qcom,ddr-config: Certain chipsets and platforms require particular 
> > settings
> > +	for the DDR_CONFIG register. Use this field to specify the register
> > +	value as per the Hardware Programming Guide.
> > +
> > +- qcom,dll-config: Chipset and Platform specific value. Use this 
> > field to
> > +	specify the DLL_CONFIG register value as per Hardware Programming 
> > Guide.
>
> Board specific or SoC specific? If the latter, imply this from the
> compatible string.

Reposting again as can't find my comment on the 
https://patchwork.kernel.org/ page.
Whatever DLL settings are SOC specific are being taken care with the 
compatible string.
That is the reason we introduced qcom,sm8250-sdhci string.
The above listed two configuration can change from board to board 
as-well.