| From: |
| Yu-Chun Lin <eleanor.lin-AT-realtek.com> |
| To: |
| <linusw-AT-kernel.org>, <brgl-AT-kernel.org>, <robh-AT-kernel.org>, <krzk+dt-AT-kernel.org>, <conor+dt-AT-kernel.org>, <afaerber-AT-suse.com>, <mwalle-AT-kernel.org>, <andriy.shevchenko-AT-intel.com>, <tychang-AT-realtek.com> |
| Subject: |
| [PATCH v4 0/4] gpio: realtek: Add support for Realtek DHC RTD1625 |
| Date: |
| Mon, 22 Jun 2026 17:23:31 +0800 |
| Message-ID: |
| <20260622092335.1166876-1-eleanor.lin@realtek.com> |
| Cc: |
| <linux-gpio-AT-vger.kernel.org>, <devicetree-AT-vger.kernel.org>, <linux-kernel-AT-vger.kernel.org>, <linux-arm-kernel-AT-lists.infradead.org>, <linux-realtek-soc-AT-lists.infradead.org>, <cy.huang-AT-realtek.com>, <stanley_chang-AT-realtek.com>, <eleanor.lin-AT-realtek.com>, <james.tai-AT-realtek.com> |
| Archive-link: |
| Article |
This series adds GPIO support for the Realtek DHC RTD1625 SoC.
Unlike the existing driver (gpio-rtd.c) which uses shared bank registers,
the RTD1625 features a per-pin register architecture where each GPIO line
is managed by its own dedicated 32-bit control register. This distinct
hardware design requires a new, separate driver.
Best Regards,
Yu-Chun Lin
---
Patches 1-3 (fix, dt-bindings, and driver) are targeted for the GPIO tree.
Patch 4 (dts) will be taken via the Realtek SoC tree later. It is included
here for context.
Changes in v4:
- Reverted to the v2 approach (without gpio-regmap integration).
As a result, dropped patches 2, 3, and 4 from the v3 series.
Changes in Patch 3 (driver) since v2:
- IRQ handling fixes:
- Added enum rtd1625_irq_index with named constants.
- Documented the hardware quirk.
- Code cleanup and coding style improvements.
- Included the <linux/cleanup.h> header.
- Updated the copyright year.
- Retained Linus Walleij's Reviewed-by tag from v1, as the recent updates are
cleanups and fixes rather than major feature changes.
(Linus, please let me know if you have any concerns regarding this).
v3: https://lore.kernel.org/lkml/20260512033317.1602537-1-ele...
v2: https://lore.kernel.org/lkml/20260408025243.1155482-1-ele...
v1: https://lore.kernel.org/lkml/20260331113835.3510341-1-ele...
Tzuyi Chang (2):
dt-bindings: gpio: realtek: Add realtek,rtd1625-gpio
gpio: realtek: Add driver for Realtek DHC RTD1625 SoC
Yu-Chun Lin (2):
gpio: Replace "default y" with "default ARCH_REALTEK" in Kconfig
arm64: dts: realtek: Add GPIO support for RTD1625
.../bindings/gpio/realtek,rtd1625-gpio.yaml | 71 ++
arch/arm64/boot/dts/realtek/kent.dtsi | 39 ++
drivers/gpio/Kconfig | 14 +-
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-rtd1625.c | 611 ++++++++++++++++++
5 files changed, 735 insertions(+), 1 deletion(-)
create mode 100644 Documentation/devicetree/bindings/gpio/realtek,rtd1625-gpio.yaml
create mode 100644 drivers/gpio/gpio-rtd1625.c
--
2.43.0
