[PATCH 0/3] soc: realtek: Add Realtek DHC I/O level detector support
From: Yu-Chun Lin <eleanor.lin@realtek.com>
Date: 2026-06-04 11:19:09
Also in:
linux-devicetree, lkml
Hi all, This patch series introduces support for the Realtek DHC I/O level detector. The Realtek DHC I/O level detector is a hardware block responsible for detecting the I/O signaling levels (1.8V or 3.3V) of various IP blocks such as RGMII, SDIO, eMMC, CSI, SD, UART1, and AIO. The driver reads the hardware registers to determine the current I/O voltage levels. Based on these detection results, it dynamically selects and applies the appropriate pinctrl states to ensure the correct pad configurations are used for each interface. Thanks, Yu-Chun Tzuyi Chang (2): dt-bindings: soc: realtek: Add Realtek DHC I/O level detector soc: realtek: Add driver for DHC I/O level detector Yu-Chun Lin (1): arm64: dts: realtek: Add I/O level detector .../realtek/realtek,rtd1625-io-detect.yaml | 77 +++++++++ MAINTAINERS | 1 + arch/arm64/boot/dts/realtek/kent-pinctrl.dtsi | 108 +++++++++++++ arch/arm64/boot/dts/realtek/kent.dtsi | 28 ++++ drivers/soc/Kconfig | 1 + drivers/soc/Makefile | 1 + drivers/soc/realtek/Kconfig | 21 +++ drivers/soc/realtek/Makefile | 2 + drivers/soc/realtek/rtd-io-detect.c | 152 ++++++++++++++++++ 9 files changed, 391 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/realtek/realtek,rtd1625-io-detect.yaml create mode 100644 arch/arm64/boot/dts/realtek/kent-pinctrl.dtsi create mode 100644 drivers/soc/realtek/Kconfig create mode 100644 drivers/soc/realtek/Makefile create mode 100644 drivers/soc/realtek/rtd-io-detect.c -- 2.43.0