Re: [PATCH 4/4] arm64: dts: qcom: sc7280-crd: Add Touchscreen and touchpad support

Rajendra Nayak
2021-11-24T11:49:42Z

On 11/23/2021 11:28 PM, Matthias Kaehlcke wrote:
> On Tue, Nov 23, 2021 at 12:30:13PM +0530, Rajendra Nayak wrote:
>> From: Kshitiz Godara <kgodara@codeaurora.org>
>>
>> Add Touchscreen and touchpad hid-over-i2c node
>
> to which board(s)?

will update

>
>> Signed-off-by: Kshitiz Godara <kgodara@codeaurora.org>
>> Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
>> ---
>> arch/arm64/boot/dts/qcom/sc7280-crd.dts | 63 +++++++++++++++++++++++++++++++++
>> 1 file changed, 63 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sc7280-crd.dts b/arch/arm64/boot/dts/qcom/sc7280-crd.dts
>> index 8c2aee6..bef3037 100644
>> --- a/arch/arm64/boot/dts/qcom/sc7280-crd.dts
>> +++ b/arch/arm64/boot/dts/qcom/sc7280-crd.dts
>> @@ -23,6 +23,47 @@
>> };
>> };
>>
>> +ap_tp_i2c: &i2c0 {
>> + status = "okay";
>> + clock-frequency = <400000>;
>> +
>> + trackpad: trackpad@15 {
>> + compatible = "hid-over-i2c";
>> + reg = <0x15>;
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&tp_int_odl>;
>> +
>> + interrupt-parent = <&tlmm>;
>> + interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
>> +
>> + post-power-on-delay-ms = <20>;
>> + hid-descr-addr = <0x0001>;
>> + vdd-supply = <&vreg_l18b_1p8>;
>> +
>> + wakeup-source;
>> + };
>> +};
>> +
>> +ap_ts_pen_1v8: &i2c13 {
>> + status = "okay";
>> + clock-frequency = <400000>;
>> +
>> + ap_ts: touchscreen@5c {
>> + compatible = "hid-over-i2c";
>> + reg = <0x5C>;
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&ts_int_l>, <&ts_reset_l>;
>> +
>> + interrupt-parent = <&tlmm>;
>> + interrupts = <55 IRQ_TYPE_LEVEL_LOW>;
>> +
>> + post-power-on-delay-ms = <500>;
>> + hid-descr-addr = <0x0000>;
>> +
>> + vdd-supply = <&vreg_l19b_1p8>;
>> + };
>> +};
>> +
>> &nvme_pwren {
>> pins = "gpio51";
>> };
>> @@ -30,3 +71,25 @@
>> &nvme_3v3_regulator {
>> gpio = <&tlmm 51 GPIO_ACTIVE_HIGH>;
>> };
>> +
>> +&tlmm {
>> + tp_int_odl: tp-int-odl {
>> + pins = "gpio7";
>> + function = "gpio";
>> + input-enable;
>
> Not sure about this one, is the explicit 'input-enable' actually needed here?

Maybe not, will test it once after I remove it

>
>> + bias-disable;
>> + };
>> +
>> + ts_int_l: ts-int-l {
>> + pins = "gpio55";
>> + function = "gpio";
>> + bias-pull-up;
>> + };
>> +
>> + ts_reset_l: ts-reset-l {
>> + pins = "gpio54";
>> + function = "gpio";
>> + bias-disable;
>> + drive-strength = <2>;
>
> As per my comment on "[3/4] arm64: dts: qcom: sc7280: Define EC and H1 nodes" it
> seems setting the drive strength to 2 isn't necessary, since that's the default.

right I'll remove it, thanks