[PATCH v4 2/3] pinctrl: bcm: Add STB family pin controller driver

[Linus Walleij]

On Thu, Aug 28, 2025 at 2:45 PM Andrea della Porta
<andrea.porta at suse.com> wrote:

> From: "Ivan T. Ivanov" <iivanov at suse.de>
>
> This driver provide pin muxing and configuration functionality
> for BCM2712 SoC used by RPi5. According to [1] this chip is an
> instance of the one used in Broadcom STB  product line.
>
> [1] https://lore.kernel.org/lkml/f6601f73-cb22-4ba3-88c5-241be8421fc3@broadcom.com/
>
> Cc: Jonathan Bell <jonathan at raspberrypi.com>
> Cc: Phil Elwell <phil at raspberrypi.com>
> Signed-off-by: Ivan T. Ivanov <iivanov at suse.de>
> Reviewed-by: Phil Elwell <phil at raspberrypi.com>
> Signed-off-by: Andrea della Porta <andrea.porta at suse.com>

Overall this feels merge class, I am looking over the requirement
series from Bartosz to see if we can merge it all today.

I also looked in a vendor tree for the (by now 6 years old...)
BCMBCA driver, but it appears to be a completely different
beast, requiring some magic 0x21 to be written into a register
to "commit" a pin control change.

Yours,
Linus Walleij