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[v3,0/2] gpio: ixp4xx: Handle external clock output

Message ID 20230923-ixp4xx-gpio-clocks-v3-0-66f8fe4e7f15@linaro.org
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Series gpio: ixp4xx: Handle external clock output | expand

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Linus Walleij Sept. 23, 2023, 4:02 p.m. UTC 
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 <linus.walleij@linaro.org>
---
Changes in v3:
- Make sure to only manipulate the clock bits if one of the clock
  DT properties is set. Devices we can't test may rely on HW defaults being
  preserved in the clock bits.
- Link to v2: https://lore.kernel.org/r/20230922-ixp4xx-gpio-clocks-v2-0-0215ee10976d@linaro.org

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

---
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                         | 49 ++++++++++++++-
 4 files changed, 122 insertions(+), 40 deletions(-)
---
base-commit: 0bb80ecc33a8fb5a682236443c1e740d5c917d1d
change-id: 20230921-ixp4xx-gpio-clocks-7e82289f4bb3

Best regards,