Re: [PATCH v2] x86/platform/geode: reference the real node of the cs5535 GPIO controller

[Bartosz Golaszewski]

On Fri, May 22, 2026 at 11:05 AM Bartosz Golaszewski
<bartosz.golaszewski@xxxxxxxxxxxxxxxx> wrote:
>
> We now can access the address of the software node associated with the
> GPIO controller cell of the cs5535 MFD device. Make it the target of the
> GPIO software node references in geode-common.c. Make sure the cs5535
> driver is built-in for all boards selecting GEODE_COMMON. Note that the
> software node in question is exported in the "CS5535" namespace so we
> must import it in this module.
>
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxxxxxxxx>
> ---
> GPIO software node lookup should rely exclusively on matching the
> addresses of the referenced firmware nodes. I tried to enforce it with
> commit e5d527be7e69 ("gpio: swnode: don't use the swnode's name as the
> key for GPIO lookup") but it broke existing users who abuse the software
> node mechanism by creating "dummy" software nodes named after the device
> they want to get GPIOs from but never attaching them to the actual GPIO
> devices. They rely on the current behavior of GPIOLIB where it will match
> the label of the GPIO controller against the name of the software node
> and does not require a true link.
>
> In order to un-revert e5d527be7e69, we need to convert all existing
> users to real firmware node lookup for software nodes.
>
> This series exposes the software node associated with the GPIO
> controller cell of the cs5535 MFD device and uses it in the geode board
> setup for LEDs.
>
> Merging strategy: there's not much development going on for the geode
> board file so this could go through the MFD tree with an ack from the
> x86 maintainers.
> ---
> Changes in v2:
> - Drop the MFD patch that's already in linux-next
> - Rebase on top of current linux-next
> - Rephrase the commit message, mention the namespace import
> - Link to v1: https://patch.msgid.link/20260429-cs5535-swnode-v1-0-2bc5e17ddcf9@xxxxxxxxxxxxxxxx
> ---

Hi Dave!

Gentle ping, can you please leave your Ack under this patch so that
Lee can take it through the MFD tree for v7.2?

Bart