This patchset fixes two issues with the RDA GPIO driver:
- Makes GPIO IRQ optional for modem-handled GPIO block
- GPIO output direction misbehaviors

This change should not affect any existing users of the RDA Micro
platform.

This patchset is considered to be a v3, as I did not tag the previous
patchset as v2 and is a split from both of my v1/v2 patchset.

Changes in v3:
- Use bidirectional direction register for dirin register which truly
  fixes the previous issue.
- Link to v2: https://lore.kernel.org/all/20250919-rda8810pl-mmc-v1-0-d4f08a05ba4d@mainlining.org/

Changes in v2:
- Update commit message for "gpio: rda: Make direction register unreadable"
- Link to v1: https://lore.kernel.org/all/20250917-rda8810pl-drivers-v1-0-74866def1fe3@mainlining.org/

Signed-off-by: Dang Huynh <dang.huynh@mainlining.org>
---
Dang Huynh (3):
      dt-bindings: gpio: rda: Make interrupts optional
      gpio: rda: Make IRQ optional
      gpio: rda: Use bidirectional GPIO register for direction input

 Documentation/devicetree/bindings/gpio/gpio-rda.yaml | 3 ---
 drivers/gpio/gpio-rda.c                              | 5 ++---
 2 files changed, 2 insertions(+), 6 deletions(-)
---
base-commit: 846bd2225ec3cfa8be046655e02b9457ed41973e
change-id: 20250925-rda8810pl-gpio-fix-db6f7442eae7

Best regards,
-- 
Dang Huynh <dang.huynh@mainlining.org>