[Letux-kernel] [PATCH] drivers: gpio: pca953x: add compatibility for pcal6524 and pcal9555a

Andy Shevchenko andy.shevchenko at gmail.com
Tue Mar 13 17:56:16 CET 2018


On Sat, Mar 10, 2018 at 1:00 PM, H. Nikolaus Schaller <hns at goldelico.com> wrote:
> The Pyra-Handheld originally used the tca6424 but recently we have
> replaced it by the pin and package compatible pcal6524. So let's
> add this to the bindings and the driver.
>
> And while we are at it, the pcal9555a does not have a compatible entry
> either but is already supported by the device id table.


> +       { "pcal6524", 24 | PCA953X_TYPE | PCA_INT | PCA_PCAL, },
>         { "pcal9555a", 16 | PCA953X_TYPE | PCA_INT | PCA_PCAL, },

So, from your description I can get that PCA_PCAL is redundant for
6524. Is it correct? What does L means in the model code?
Perhaps we need to rename PCA_PCAL to be more specific?


> +       { .compatible = "nxp,pcal6524", .data = OF_953X(24, PCA_INT), },
> +       { .compatible = "nxp,pcal9555a", .data = OF_953X(16, PCA_INT), },

Other way around, you missed PCA_PCAL in the second case.

-- 
With Best Regards,
Andy Shevchenko


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