Re: [PATCH v4 2/2] arm64: dts: qcom: Add Xiaomi 12 Lite 5G (taoyao) DTS

[Val Packett]

Hello again :)

On 3/5/26 6:39 AM, Stanislav Zaikin wrote:
> Xiaomi 12 Lite 5G is a handset released in 2022
> […]
> +	touchscreen@0 {
> +		compatible = "goodix,gt9916";
> +		reg = <0>;
> +
> +		interrupts-extended = <&tlmm 81 IRQ_TYPE_LEVEL_LOW>;
> +
> +		reset-gpios = <&tlmm 105 GPIO_ACTIVE_LOW>;
> +
> +		avdd-supply = <&vreg_l7c_3p0>;
> +		vddio-supply = <&vreg_l2c_1p8>;
> +
> +		spi-max-frequency = <5000000>;
> +
> +		touchscreen-size-x = <10800>;
> +		touchscreen-size-y = <24000>;
> […]

I have noticed this previously and started wondering why the size was 
10x higher. Now with my own device (motorola-dubai) I actually found out 
why…

With the actual 1080x2400 size, the mm values reported by libinput are 
10x higher than what they should be, e.g. touching the bottom right 
corner with libinput debug-events:

 event3   TOUCH_MOTION              2  +1.493s  0 (0) 98.80/98.75 
(1067.00/2370.00mm)

(2.4 meter tall phone! :D) which was mooooostly "fine" except Phosh's 
on-screen keyboard was accidentally detecting super-fast down swipes as 
I was typing normally, and suddenly closing the keyboard as I was typing.


Let's do this in a more acceptable way, in the goodix-berlin driver:

https://lore.kernel.org/all/20260321073242.556253-1-val@xxxxxxxxxxxx/

so set the properties to 1080/2400 in v5!


Thanks,
~val