Am Montag, 20. März 2017, 16:53:44 CET schrieb Brian Norris:
> 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 <briannorris@xxxxxxxxxxxx>
> ---
> v3:
> * reintroduced into patch set; bindings are in linux-next
> ---
> 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
> 2f720cf2fd07..f4714c4606f3 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 {
according to the hid-over-i2c binding, this should use a special compatible
like
compatible = "wacom,w9013", "hid-over-i2c"
As the binding patch is from Caesar, I assume that is the Kevin component and
I can add that myself, just need confirmation that this is actually the correct
component :-) .
Thanks
Heiko
> pinctrl-names = "default";
> pinctrl-0 = <&cpu1_dig_irq_l &cpu1_dig_pdct_l>;
>
> + vdd-supply = <&p3_3v_dig>;
> + post-power-on-delay-ms = <100>;
> +
> interrupt-parent = <&gpio2>;
> interrupts = <4 IRQ_TYPE_LEVEL_LOW>;
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