Re: [PATCH v4 4/4] ARM: dts: sun6i: Add dts file for MSI Primo81 tablet

[Chen-Yu Tsai]

On Sat, Oct 24, 2015 at 12:56 AM, Karsten Merker <merker@xxxxxxxxxx> wrote:
> On Fri, Oct 23, 2015 at 11:56:35PM +0800, Chen-Yu Tsai wrote:
>> On Fri, Oct 23, 2015 at 11:46 PM, Chen-Yu Tsai <wens@xxxxxxxx> wrote:
>> > On Fri, Oct 23, 2015 at 10:53 PM, Karsten Merker <merker@xxxxxxxxxx> wrote:
>> >> On Fri, Oct 23, 2015 at 11:50:41AM +0800, Chen-Yu Tsai wrote:
> [...]
>> >>> +/ {
>> >>> +     model = "MSI Primo81 tablet";
>> >>> +     compatible = "msi,primo81", "allwinner,sun6i-a31s";
>> >>> +};
> [...]
>> >>> +&i2c1 {
>> >>> +     pinctrl-names = "default";
>> >>> +     pinctrl-0 = <&i2c1_pins_a>;
>> >>> +     status = "okay";
>> >>> +
>> >>> +     ctp@5d {
>> >>> +             pinctrl-names = "default";
>> >>> +             pinctrl-0 = <&gt911_int_primo81>;
>> >>> +             compatible = "goodix,gt911";
>> >>> +             reg = <0x5d>;
>> >>> +             interrupt-parent = <&pio>;
>> >>> +             interrupts = <0 3 IRQ_TYPE_LEVEL_HIGH>; /* PA3 */
>> >>
>> >> I'd like to add a
>> >>
>> >>                 touchscreen-swapped-x-y = "true";
>> >>
>> >> as described in
>> >> Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt
>> >> here, as the display is in portrait mode while the touchscreen is
>> >> in landscape mode and needs to have the x and y axes swapped to
>> >> work in the same coordinate system as the display.
>> >>
>> >> Regarding the driver side: the goodix driver in kernel 4.3
>> >> doesn't yet support this property, but patches to add support for
>> >> it are on the linux-input list and should hopefully make it into
>> >> kernel 4.4.
>> >
>> > The DTS is already in Maxime's tree, and in sunxi-next. Feel free to
>> > send a follow-up patch adding them. I was waiting for those patches
>> > to be merged.
>>
>> Sorry, spoke too soon. Maxime hasn't pushed it out yet. Could you send
>> a patch adding touchscreen-swapped-x-y for Maxime to squash in?
>
> I'm happy to do so, but I have just stumbled over a problem with
> actually building the dtb for testing - it fails with
>
>   arch/arm/boot/dts/sun6i-a31s-primo81.dts:242.1-14 Label or path simplefb_lcd not found
>
> The dts references simplefb_lcd:
>
> +&simplefb_lcd {
> +       vcc-lcd-supply = <&reg_dc1sw>;
> +       vdd-mipi-bridge-supply = <&reg_eldo3>;
> +};
>
> but I don't see where it would be defined. This is on the current
> sunxi/for-next branch of
> https://git.kernel.org/cgit/linux/kernel/git/mripard/linux.git
> with the Primo81 dts patch on top. Am I perhaps missing some
> required additional patch here?

Yes. The previous patch that adds labels to the simplefb nodes.
Both patches are now in sunxi/for-next in Maxime's tree now.

ChenYu
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