Re: [PATCH v3 2/7] bindings: spi-samsung: document the clocks and the clock-name property

[Rob Herring <robh@kernel.org>]

On Tue, Jul 12, 2016 at 07:02:11PM +0900, Andi Shyti wrote:
> These two properties were not documented but used in the spi
> dts. Add the related documentation.
> 
> Suggested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
> Signed-off-by: Andi Shyti <andi.shyti@samsung.com>
> Reviewed-by: Michael Turquette <mturquette@baylibre.com>
> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
> ---
>  Documentation/devicetree/bindings/spi/spi-samsung.txt | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/spi/spi-samsung.txt b/Documentation/devicetree/bindings/spi/spi-samsung.txt
> index 57d5539..f45c6eb 100644
> --- a/Documentation/devicetree/bindings/spi/spi-samsung.txt
> +++ b/Documentation/devicetree/bindings/spi/spi-samsung.txt
> @@ -24,6 +24,15 @@ Required SoC Specific Properties:
>  - dma-names: Names for the dma channels. There must be at least one channel
>    named "tx" for transmit and named "rx" for receive.
>  
> +- clocks: specifies the clock IDs provided to the SPI controller; they are
> +  required for interacting with the controller itself, for synchronizing the bus
> +  and as I/O clock (the latter is required by exynos5433 and exynos7).
> +
> +- clock-names: string names of the clocks in the 'clocks' property; for all the
> +  the devices the names must be "spi", "spi_busclkN" (where N is determined by
> +  "samsung,spi-src-clk"), while Exynos5433 should specify a third clock

This sounds like you are describing the configuration of the clocks, not 
the connections. The binding here should list clocks for all possible 
vaules of N as those are all the input clocks to the block.

> +  "spi_ioclk" for the I/O clock.
> +
>  Required Board Specific Properties:
>  
>  - #address-cells: should be 1.
> -- 
> 2.8.1
>