Re: [PATCH v6] i2c: Add support for NXP PCA984x family.

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On Mon, Dec 18, 2017 at 06:45:06PM +0100, Adrian Fiergolski wrote:
> This patch extends the current i2c-mux-pca954x driver and adds support for
> a newer PCA984x family of the I2C switches and multiplexers from NXP.
> 
> Signed-off-by: Adrian Fiergolski <adrian.fiergolski@xxxxxxx>
> ---
>  .../devicetree/bindings/i2c/i2c-mux-pca954x.txt    |  5 ++-
>  drivers/i2c/muxes/Kconfig                          |  6 ++--
>  drivers/i2c/muxes/i2c-mux-pca954x.c                | 38 +++++++++++++++++++---
>  3 files changed, 41 insertions(+), 8 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt
> index aa097045a10e..b428bc0d81b1 100644
> --- a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt
> +++ b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt
> @@ -1,10 +1,13 @@
>  * NXP PCA954x I2C bus switch
>  
> +The driver supports NXP PCA954x and PCA984x I2C mux/switch devices.
> +
>  Required Properties:
>  
>    - compatible: Must contain one of the following.
>      "nxp,pca9540", "nxp,pca9542", "nxp,pca9543", "nxp,pca9544",
> -    "nxp,pca9545", "nxp,pca9546", "nxp,pca9547", "nxp,pca9548"
> +    "nxp,pca9545", "nxp,pca9546", "nxp,pca9547", "nxp,pca9548",
> +    "nxp,pca9846", "nxp,pca9847", "nxp,pca9848", "nxp,pca9849"

The format here should be 1 valid combination of compatibles per line. 
So it should be clear what are valid fallbacks as Peter suggested.

>  
>    - reg: The I2C address of the device.
>  
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