kernel/linux.git/drivers/pinctrl/realtek, branch v7.1-rc5

pinctrl: realtek: add rtd1625 pinctrl driver

2026-03-23T08:59:35+00:00

Add support for Realtek RTD1625 SoC using the realtek common pinctrl driver. This patch introduces the RTK_PIN_CONFIG_V2 and RTK_PIN_CONFIG_I2C macros, which are required to describe the specific register layout and electrical features (such as slew rate and high VIL) of the RTD1625 pins. Signed-off-by: Tzuyi Chang Signed-off-by: Yu-Chun Lin Signed-off-by: Linus Walleij

pinctrl: realtek: add support for slew rate, input voltage and high VIL

2026-03-23T08:59:35+00:00

Add support for configuring slew rate, input voltage level and high VIL mode. This involves updating the pin configuration parsing logic to handle PIN_CONFIG_SLEW_RATE, PIN_CONFIG_INPUT_VOLTAGE_UV and the new custom property "realtek,high-vil-microvolt". Reviewed-by: Linus Walleij Signed-off-by: Tzuyi Chang Co-developed-by: Yu-Chun Lin Signed-off-by: Yu-Chun Lin Signed-off-by: Linus Walleij

pinctrl: realtek: Fix function signature for config argument

2026-03-23T08:59:34+00:00

The argument originates from pinconf_to_config_argument(), which returns a u32. Therefore, the arg parameter should be an unsigned int instead of enum pin_config_param. Fixes: e99ce78030db ("pinctrl: realtek: Add common pinctrl driver for Realtek DHC RTD SoCs") Signed-off-by: Yu-Chun Lin Signed-off-by: Linus Walleij

pinctrl: realtek: Fix error check for devm_platform_ioremap_resource()

2026-03-16T10:13:51+00:00

Replace NULL check with IS_ERR() for devm_platform_ioremap_resource() return value. Use dev_err_probe() for error handling to maintain consistency with the rest of the probe function. Fixes: b7f698b22b8b ("pinctrl: realtek: Switch to use devm functions") Signed-off-by: Chen Ni Signed-off-by: Linus Walleij

pinctrl: realtek: Support system suspend and resume

2026-03-10T09:26:37+00:00

Add system suspend and resume capabilities to the common Realtek pinctrl library. This enables saving and restoring pin configurations during the noirq phase for SoCs that define register ranges. Signed-off-by: Tzuyi Chang Co-developed-by: Yu-Chun Lin Signed-off-by: Yu-Chun Lin Signed-off-by: Linus Walleij

pinctrl: realtek: Fix grammar in error messages

2026-03-10T09:25:57+00:00

Correct the grammar in dev_err() messages. Change "Not support ..." to " unsupported..." to improve readability and comply with standard English usage. Signed-off-by: Yu-Chun Lin Signed-off-by: Linus Walleij

pinctrl: realtek: Simplify error handling with dev_err_probe()

2026-03-10T09:25:44+00:00

Convert the error handling code in probe() to use dev_err_probe() to enhance semantic meaning. Reviewed-by: Bartosz Golaszewski Signed-off-by: Yu-Chun Lin Signed-off-by: Linus Walleij

pinctrl: realtek: Switch to use devm functions

2026-03-10T09:25:24+00:00

Simplify the probe() function by switching to devm-managed versions of ioremap and pinctrl registration. Signed-off-by: Yu-Chun Lin Signed-off-by: Linus Walleij

pinctrl: realtek: Fix return value and silence log for unsupported configs

2026-03-10T09:25:19+00:00

Treating unsupported configurations as errors causes upper layers (like the GPIO subsystem) to interpret optional features as hard failures, aborting operations or printing unnecessary error logs. For example, during gpiod_get(), the GPIO framework attempts to set PIN_CONFIG_PERSIST_STATE. Since this driver does not support it, false error reports are generated in dmesg. Fix this by returning -ENOTSUPP and demoting the log level to dev_dbg. Reviewed-by: Bartosz Golaszewski Signed-off-by: Tzuyi Chang Signed-off-by: Yu-Chun Lin Signed-off-by: Linus Walleij

pinctrl: realtek: Cleanup license string

2026-03-10T09:25:12+00:00

Prefer "GPL" over "GPL v2" - see commit bf7fbeeae6db ("module: Cure the MODULE_LICENSE "GPL" vs. "GPL v2" bogosity") Reviewed-by: Bartosz Golaszewski Signed-off-by: Yu-Chun Lin Signed-off-by: Linus Walleij