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[0/2] Enable MMIO GPIO on BCMBCA

Message ID 20240917-bcmbca-gpio-mmio-v1-0-674bae8664cc@linaro.org
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Series Enable MMIO GPIO on BCMBCA | expand

Message

Linus Walleij Sept. 17, 2024, 12:44 p.m. UTC 
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@linaro.org>
---
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(+)
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base-commit: 98f7e32f20d28ec452afb208f9cffc08448a2652
change-id: 20240917-bcmbca-gpio-mmio-5da863cf5a5d

Best regards,