On Wed, Jun 01, 2016 at 11:43:29PM +0200, Gerd Hoffmann wrote:
> From: Eric Anholt <eric@xxxxxxxxxx>
>
> This is the other SD controller on the platform, which can be swapped
> to the role of SD card host using pin muxing.
>
> Signed-off-by: Eric Anholt <eric@xxxxxxxxxx>
> ---
> .../devicetree/bindings/mmc/brcm,bcm2835-sdhci.txt | 3 +++
> .../bindings/mmc/brcm,bcm2835-sdhost.txt | 24 ++++++++++++++++++++++
> 2 files changed, 27 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhost.txt
>
> diff --git a/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhci.txt b/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhci.txt
> index 59476fb..3cc74e2 100644
> --- a/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhci.txt
> +++ b/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhci.txt
> @@ -15,4 +15,7 @@ sdhci: sdhci {
> interrupts = <2 30>;
> clocks = <&clk_mmc>;
> bus-width = <4>;
> + dmas = <&dma 13>,
> + <&dma 13>;
> + dma-names = "tx", "rx";
This looks unrelated. Plus SDHCI implies internal DMA master generally,
so is external DMA really supported?
> };
> diff --git a/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhost.txt b/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhost.txt
> new file mode 100644
> index 0000000..074992c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhost.txt
> @@ -0,0 +1,24 @@
> +Broadcom BCM2835 SDHOST controller
> +
> +This file documents differences between the core properties described
> +by mmc.txt and the properties that represent the BCM2835 controller.
> +
> +Required properties:
> +- compatible: Should be "brcm,bcm2835-sdhci".
sdhost?
> +- clocks: The clock feeding the SDHOST controller.
reg, interrupts missing.
> +
> +Optional properties:
> +- dmas: DMA channels for read and write.
> + See Documentation/devicetree/bindings/dma/dma.txt for details
dma-names?
> +
> +Example:
> +
> +sdhost: sdhost@7e202000 {
> + compatible = "brcm,bcm2835-sdhost";
> + reg = <0x7e202000 0x100>;
> + interrupts = <2 24>;
> + clocks = <&clocks BCM2835_CLOCK_VPU>;
> + dmas = <&dma 13>,
> + <&dma 13>;
> + dma-names = "tx", "rx";
> +};
> --
> 1.8.3.1
>
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