On Fri, Apr 26, 2019 at 08:05:51AM +0000, Robin Gong wrote:
> ERR009165 fixed from i.mx6ul, add it to show the errata fixed.
> 
> Signed-off-by: Robin Gong <yibin.gong@nxp.com>
> ---
>  Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt b/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt
> index 2d32641..32c4263d 100644
> --- a/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt
> +++ b/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt
> @@ -10,6 +10,8 @@ Required properties:
>    - "fsl,imx35-cspi" for SPI compatible with the one integrated on i.MX35
>    - "fsl,imx51-ecspi" for SPI compatible with the one integrated on i.MX51
>    - "fsl,imx53-ecspi" for SPI compatible with the one integrated on i.MX53 and later Soc
> +  - "fsl,imx6ul-ecspi" ERR009165 fixed on i.MX6UL and later Soc
> +    (https://www.nxp.com/docs/en/errata/IMX6DQCE.pdf)

I wouldn't mention this errata in the binding documentation. Just state
that fsl,imx6ul-ecspi is designed to be used on i.MX6UL. And that it
might also be used on later SoCs as a "fallback compatible" is a detail
that is so common that I would expect it not being worth mentioning. So
for me it would also be OK to drop "fsl,imx53-ecspi" from the list as
this is only used like:

	compatible = "fsl,imx53-ecspi", "fsl,imx51-ecspi";

(But note that I have no authority here.)

Best regards
Uwe