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As a result, enabling CONFIG_PINCTRL_TIGERLAKE may be required for proper I2C device detection. Document this in the Kconfig help text to assist users encountering this is= sue. Link: https://bugzilla.kernel.org/show_bug.cgi?id=3D220056 Signed-off-by: Ariel Simulevski Reported-by: ... ? --- drivers/pinctrl/intel/Kconfig | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/pinctrl/intel/Kconfig b/drivers/pinctrl/intel/Kconfig index 248c2e558ff3..b8e1436b04f7 100644 --- a/drivers/pinctrl/intel/Kconfig +++ b/drivers/pinctrl/intel/Kconfig @@ -54,6 +54,11 @@ config PINCTRL_ALDERLAKE This pinctrl driver provides an interface that allows configuring of Intel Alder Lake PCH pins and using them as GPIOs. =20 + Note: On some Alder Lake platforms, including systems with + the PixArt I2C touchpad (PIXA3848), the hardware reuses + Tiger Lake style GPIO blocks. For proper device detection, + enabling CONFIG_PINCTRL_TIGERLAKE may be necessary. + config PINCTRL_BROXTON tristate "Intel Broxton pinctrl and GPIO driver" select PINCTRL_INTEL --=20 2.49.0