Re: [PATCH v2 1/2] dt: bindings: Add bindings for SDHCI Synopsys DWC MSHC
On Thu, Jul 12, 2018 at 10:06:11AM +0800, Jisheng Zhang wrote: > Hi Rob, > > On Wed, 11 Jul 2018 10:12:06 -0600 Rob Herring wrote: > > > On Fri, Jul 06, 2018 at 03:20:47PM +0800, Jisheng Zhang wrote: > > > Synopsys SDHCI compatible DesignWare Cores Mobile Storage Host > > > Controller can support eMMC/SD/SDIO. Add the bindings. > > > > > > Signed-off-by: Jisheng Zhang > > > --- > > > .../bindings/mmc/sdhci-of-dwcmshc.txt | 20 +++ > > > 1 file changed, 20 insertions(+) > > > create mode 100644 > > > Documentation/devicetree/bindings/mmc/sdhci-of-dwcmshc.txt > > > > > > diff --git a/Documentation/devicetree/bindings/mmc/sdhci-of-dwcmshc.txt > > > b/Documentation/devicetree/bindings/mmc/sdhci-of-dwcmshc.txt > > > new file mode 100644 > > > index ..ee4253b33be2 > > > --- /dev/null > > > +++ b/Documentation/devicetree/bindings/mmc/sdhci-of-dwcmshc.txt > > > @@ -0,0 +1,20 @@ > > > +* Synopsys DesignWare Cores Mobile Storage Host Controller > > > + > > > +Required properties: > > > +- compatible: should be one of the following: > > > +"snps,dwcmshc-sdhci" > > > > Needs to note that there must also be an SoC specific compatible. > > Currently, there's no SoC specific code in this driver, so the binding could > be extended to SoC compatible if necessary. What do you think? Doesn't matter what's in the driver, it can use this compatible. But experience has shown that a compatible for a licensed IP is never sufficient. There are versions of the blocks, configuration options, and integration differences. I'm not asking you to add any SoC specific compatible now unless you are working on a particular SoC, but just state one is needed. Rob
Re: [PATCH v2 1/2] dt: bindings: Add bindings for SDHCI Synopsys DWC MSHC
Hi Rob, On Wed, 11 Jul 2018 10:12:06 -0600 Rob Herring wrote: > On Fri, Jul 06, 2018 at 03:20:47PM +0800, Jisheng Zhang wrote: > > Synopsys SDHCI compatible DesignWare Cores Mobile Storage Host > > Controller can support eMMC/SD/SDIO. Add the bindings. > > > > Signed-off-by: Jisheng Zhang > > --- > > .../bindings/mmc/sdhci-of-dwcmshc.txt | 20 +++ > > 1 file changed, 20 insertions(+) > > create mode 100644 > > Documentation/devicetree/bindings/mmc/sdhci-of-dwcmshc.txt > > > > diff --git a/Documentation/devicetree/bindings/mmc/sdhci-of-dwcmshc.txt > > b/Documentation/devicetree/bindings/mmc/sdhci-of-dwcmshc.txt > > new file mode 100644 > > index ..ee4253b33be2 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/mmc/sdhci-of-dwcmshc.txt > > @@ -0,0 +1,20 @@ > > +* Synopsys DesignWare Cores Mobile Storage Host Controller > > + > > +Required properties: > > +- compatible: should be one of the following: > > +"snps,dwcmshc-sdhci" > > Needs to note that there must also be an SoC specific compatible. Currently, there's no SoC specific code in this driver, so the binding could be extended to SoC compatible if necessary. What do you think? Thanks, Jisheng
Re: [PATCH v2 1/2] dt: bindings: Add bindings for SDHCI Synopsys DWC MSHC
On Fri, Jul 06, 2018 at 03:20:47PM +0800, Jisheng Zhang wrote:
> Synopsys SDHCI compatible DesignWare Cores Mobile Storage Host
> Controller can support eMMC/SD/SDIO. Add the bindings.
>
> Signed-off-by: Jisheng Zhang
> ---
> .../bindings/mmc/sdhci-of-dwcmshc.txt | 20 +++
> 1 file changed, 20 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mmc/sdhci-of-dwcmshc.txt
>
> diff --git a/Documentation/devicetree/bindings/mmc/sdhci-of-dwcmshc.txt
> b/Documentation/devicetree/bindings/mmc/sdhci-of-dwcmshc.txt
> new file mode 100644
> index ..ee4253b33be2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mmc/sdhci-of-dwcmshc.txt
> @@ -0,0 +1,20 @@
> +* Synopsys DesignWare Cores Mobile Storage Host Controller
> +
> +Required properties:
> +- compatible: should be one of the following:
> +"snps,dwcmshc-sdhci"
Needs to note that there must also be an SoC specific compatible.
> +- reg: offset and length of the register set for the device.
> +- interrupts: a single interrupt specifier.
> +- clocks: Array of clocks required for SDHCI; requires at least one for
> +core clock.
> +- clock-names: Array of names corresponding to clocks property; shall be
> +"core" for core clock and "bus" for optional bus clock.
> +
> +Example:
> + sdhci2: sdhci@aa {
> + compatible = "snps,dwcmshc-sdhci";
> + reg = <0xaa 0x1000>;
> + interrupts = ;
> + clocks = <&emmcclk>;
> + bus-width = <8>;
> + }
> --
> 2.18.0
>
>
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