[PATCH v3] Tegra: DT: add device tree binding doc for QSPI

[swarren@wwwdotorg.org (Stephen Warren)]

On 10/26/2015 02:34 PM, Tom Warren wrote:
> This patch adds the device tree binding doc for the Tegra
> QSPI controller on Tegra210.

> diff --git a/Documentation/devicetree/bindings/spi/nvidia,tegra210-qspi.txt b/Documentation/devicetree/bindings/spi/nvidia,tegra210-qspi.txt

> +- clock-names : Must include the following entries:
> +  - qspi
> +- resets : Must contain an entry for each entry in reset-names.
> +  See ../reset/reset.txt for details.
> +- reset-names : Must include the following entries:
> +  - qspi
> +- clocks : Must contain an entry for each entry in clock-names.
> +  See ../clocks/clock-bindings.txt for details.

Let's keep clocks and clock-names next to each-other in the doc. I don't 
know why they aren't in the eixsting Tegra SPI doc.

With this issue fixed, this patch looks good to me.

Note: I don't see the devicetree mailing list in the CC list. You should 
probably replace the U-Boot mailing list with it.

> +Optional properties:
> +- dmas : Must contain an entry for each entry in clock-names.
> +  See ../dma/dma.txt for details.
> +- dma-names : Must include the following entries:
> +  - rx
> +  - tx

Eventually, we should have a property that describes the SPI bus width 
(x1, x2, x4 I assume). However, we can assume that unless otherwise 
specified, the width is x1, and add a property to specify the width 
later as/when we need it if you want.