The Broadcom BCA (Broadband Access) SoC:s all have a dirt-simple MMIO GPIO. It's exposed as a direction register per 32-bit block at (base) and a data register per 32-bit block at (block+0x20). However I wouldn't want to use any of the old compatibles becaus for this undocumented SoC I have a gut feeling that there may be registers we don't know about at (block+0x40) etc and a separate compatible will be needed to slot in a more elaborate driver later. Let's do this the hard way and create a new compatible, and probe regular MMIO with that for now. Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> --- Linus Walleij (2): dt-bindings: gpio: Add BCMBCA to MMIO compatibles gpio: mmio: Support BCMBCA GPIO compatible Documentation/devicetree/bindings/gpio/gpio-mmio.yaml | 1 + drivers/gpio/gpio-mmio.c | 1 + 2 files changed, 2 insertions(+) --- base-commit: 98f7e32f20d28ec452afb208f9cffc08448a2652 change-id: 20240917-bcmbca-gpio-mmio-5da863cf5a5d Best regards, -- Linus Walleij <linus.walleij@xxxxxxxxxx>