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

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Date:	Fri, 23 Oct 2015 18:56:41 +0200
From:	Karsten Merker <merker@...ian.org>
To:	Chen-Yu Tsai <wens@...e.org>
Cc:	Karsten Merker <merker@...ian.org>,
	Hans de Goede <hdegoede@...hat.com>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	"linux-fbdev@...r.kernel.org" <linux-fbdev@...r.kernel.org>,
	devicetree <devicetree@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	Mark Brown <broonie@...nel.org>,
	Siarhei Siamashka <siarhei.siamashka@...il.com>
Subject: Re: [PATCH v4 4/4] ARM: dts: sun6i: Add dts file for MSI Primo81
 tablet

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@...e.org> wrote:
> > On Fri, Oct 23, 2015 at 10:53 PM, Karsten Merker <merker@...ian.org> 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?

Regards,
Karsten
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