Re: [PATCH v6 3/5] Documentation: synopsys-dw-mshc: add binding for fifo quirks

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2016-11-18 14:29 GMT+08:00 Jun Nie <jun.nie@xxxxxxxxxx>:
> Add fifo-addr property and fifo-watermark-quirk property to
> synopsys-dw-mshc bindings. It is intended to provide more
> dt interface to support SoCs specific configuration.
>
> Signed-off-by: Jun Nie <jun.nie@xxxxxxxxxx>
> ---
>  Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt
> index 4e00e85..8bf2e41 100644
> --- a/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt
> +++ b/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt
> @@ -76,6 +76,17 @@ Optional properties:
>
>  * broken-cd: as documented in mmc core bindings.
>
> +* data-addr: Override fifo address with value provided by DT. The default FIFO reg
> +  offset is assumed as 0x100 (version < 0x240A) and 0x200(version >= 0x240A) by
> +  driver. If the controller does not follow this rule, please use this property
> +  to set fifo address in device tree.
> +
> +* fifo-watermark-aligned: Data done irq is expected if data length is less than
> +  watermark in PIO mode. But fifo watermark is requested to be aligned with data
> +  length in some SoC so that TX/RX irq can be generated with data done irq. Add this
> +  watermark quirk to mark this requirement and force fifo watermark setting
> +  accordingly.
> +
>  * vmmc-supply: The phandle to the regulator to use for vmmc.  If this is
>    specified we'll defer probe until we can find this regulator.
>
> @@ -103,6 +114,8 @@ board specific portions as listed below.
>                 interrupts = <0 75 0>;
>                 #address-cells = <1>;
>                 #size-cells = <0>;
> +               data-addr = <0x200>;
> +               fifo-watermark-aligned;
>         };
>
>  [board specific internal DMA resources]
> --
> 1.9.1
>

Add DT maintainer to review and act. Thank you!

Jun
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