On 3/1/26 6:51 PM, David Heidelberg via B4 Relay wrote:
> From: Petr Hodina <[email protected]>
>
> Basic touchscreen connected to second i2c bus.
>
> Signed-off-by: Petr Hodina <[email protected]>
> Co-developed-by: David Heidelberg <[email protected]>
> Signed-off-by: David Heidelberg <[email protected]>
> ---
> arch/arm64/boot/dts/qcom/sdm845-google-blueline.dts | 21
> ++++++++++++++++++++-
> 1 file changed, 20 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sdm845-google-blueline.dts
> b/arch/arm64/boot/dts/qcom/sdm845-google-blueline.dts
> index fa89be500fb85..2501104b06e1b 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845-google-blueline.dts
> +++ b/arch/arm64/boot/dts/qcom/sdm845-google-blueline.dts
> @@ -26,7 +26,26 @@ &i2c2 {
>
> status = "okay";
>
> - /* ST,FTS @ 49 */
> + touchscreen@49 {
> + compatible = "st,stmfts5";
> + reg = <0x49>;
> +
> + pinctrl-0 = <&touchscreen_pins &touchscreen_reset>;
> + pinctrl-names = "default";
> +
> + interrupt-parent = <&tlmm>;
> + interrupts = <125 IRQ_TYPE_LEVEL_LOW>;
> +
> + irq-gpios = <&tlmm 125 GPIO_ACTIVE_HIGH>;
This is an anti-pattern - you can translate the GPIO handle to an
IRQ handle, but unless the hardware is spectacularly odd, an interrupt
reference is usually what you're after
> + switch-gpios = <&tlmm 136 GPIO_ACTIVE_HIGH>;
> + reset-gpios = <&tlmm 99 GPIO_ACTIVE_LOW>;
> +
> + avdd-supply = <&vreg_l14a_1p8>;
> + vdd-supply = <&vreg_l19a_3p3>;
> +
> + touchscreen-size-x = <1079>;
> + touchscreen-size-y = <2159>;
Are you sure about these off-by-ones?
FWIW
input/touchscreen.c:
touchscreen_get_prop_u32(dev, "touchscreen-size-x",
input_abs_get_max(input,
axis_x) + 1,
notice ^
Konrad
