Re: [PATCH v5 5/5] gpio: pca953x: Add support for PCAL6534

From: Linus Walleij
Date: Thu Sep 15 2022 - 04:32:09 EST

On Wed, Sep 14, 2022 at 5:16 PM Martyn Welch
<martyn.welch@xxxxxxxxxxxxxxx> wrote:

> From: Martyn Welch <martyn.welch@xxxxxxxxxxxxx>
> Add support for the NXP PCAL6534. This device is broadly a 34-bit version
> of the PCAL6524. However, whilst the registers are broadly what you'd
> expect for a 34-bit version of the PCAL6524, the spacing of the registers
> has been compacted. This has the unfortunate effect of breaking the bit
> shift based mechanism that is employed to work out register locations used
> by the other chips supported by this driver. To accommodate ths, callback
> functions have been added to allow alterate implementations of
> pca953x_recalc_addr() and pca953x_check_register() for the PCAL6534.
> Datasheet:
> Datasheet:
> Signed-off-by: Martyn Welch <martyn.welch@xxxxxxxxxxxxx>

Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Linus Walleij