The GPIO block on the very legacy IXP4xx GPIO can provide
a generated clock output on GPIO 14 and GPIO 15. This
provides a straight-forward solution with a flag for each
clock output.

More complicated solutions are thinkable, but I deemed them
overdesigned for this legacy SoC.

Signed-off-by: Linus Walleij <redacted>
---
Changes in v2:
- Fixed formatting pipe | in bindings
- Fixed som blank lines in bindings
- When we will just blank out the clock register settings,
  don't spend time reading the initial value.
- Link to v1: https://lore.kernel.org/r/20230921-ixp4xx-gpio-clocks-v1-0-574942bf944a@linaro.org (local)

---
Linus Walleij (2):
      gpio: Rewrite IXP4xx GPIO bindings in schema
      gpio: ixp4xx: Handle clock output on pin 14 and 15

 .../devicetree/bindings/gpio/intel,ixp4xx-gpio.txt | 38 -----------
 .../bindings/gpio/intel,ixp4xx-gpio.yaml           | 73 ++++++++++++++++++++++
 MAINTAINERS                                        |  2 +-
 drivers/gpio/gpio-ixp4xx.c                         | 40 +++++++++++-
 4 files changed, 112 insertions(+), 41 deletions(-)
---
base-commit: 0bb80ecc33a8fb5a682236443c1e740d5c917d1d
change-id: 20230921-ixp4xx-gpio-clocks-7e82289f4bb3

Best regards,
-- 
Linus Walleij [off-list ref]


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