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

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Message-ID: <20200515025047.GA27895@bogus>
Date:   Thu, 14 May 2020 21:50:47 -0500
From:   Rob Herring <robh@...nel.org>
To:     Sarthak Garg <sartgarg@...eaurora.org>
Cc:     adrian.hunter@...el.com, ulf.hansson@...aro.org,
        vbadigan@...eaurora.org, stummala@...eaurora.org,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>
Subject: Re: [PATCH V1 1/7] dt-bindings: mmc: Add information for DLL
 register properties

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@...eaurora.org>
> ---
>  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.