We need to enable this regulator before the digitizer can be used. Wacom recommended waiting for 100 ms before talking to the HID.
Signed-off-by: Brian Norris <briannor...@chromium.org> --- Uses WIP bindings: [PATCH v3 1/2] devicetree: i2c-hid: Add regulator support https://patchwork.kernel.org/patch/9457493/ --- arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts b/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts index 66db785375a8..d260079de2ab 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts +++ b/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts @@ -232,6 +232,9 @@ ap_i2c_dig: &i2c2 { pinctrl-names = "default"; pinctrl-0 = <&cpu1_dig_irq_l &cpu1_dig_pdct_l>; + vdd-supply = <&p3_3v_dig>; + init-delay-ms = <100>; + interrupt-parent = <&gpio2>; interrupts = <4 IRQ_TYPE_LEVEL_LOW>; -- 2.8.0.rc3.226.g39d4020
