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

[Chen-Yu Tsai <wens@csie.org>]

On Fri, Oct 23, 2015 at 10:53 PM, Karsten Merker <merker@debian.org> wrote:
> On Fri, Oct 23, 2015 at 11:50:41AM +0800, Chen-Yu Tsai wrote:
>
>> From: Karsten Merker <merker@debian.org>
>>
>> The MSI Primo81 is an A31s based tablet, with 1G RAM, 16G NAND,
>> 768x1024 IPS LCD display, mono speaker, 0.3 MP front camera, 2.0 MP
>> rear camera, 3500 mAh battery, gt911 touchscreen, mma8452 accelerometer
>> and rtl8188etv usb wifi. Has "power", "volume+" and "volume-" buttons
>> (both volume buttons are also connected to the UBOOT_SEL pin). The
>
> Hello Chen-Yu,
>
> the volume button function is something that I wanted to confirm
> again but forgot to ask previously: Siarhei had pointed out that
> only the volume+ button triggers UBOOT_SEL, but for me actually
> both volume buttons work as described above.  Could you
> cross-check that on your Primo81?

IIRC both work. I can test next week.

>
>> external connectors are represented by MicroSD slot, MiniHDMI, MicroUSB
>> OTG and 3.5mm headphone jack.
>>
>> USB OTG is enabled in host only mode. AXP221 USB power supply and
>> GPIO support are required for full USB OTG support.
>>
>> Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
>> Signed-off-by: Karsten Merker <merker@debian.org>
>> Signed-off-by: Chen-Yu Tsai <wens@csie.org>
>> ---
>>
>> Changes since last submission (was part of Sinlinx SinA31s series)
>>
>>   - Update axp22x.dtsi file name
>>   - Sort regulators
>>   - Drop URL in commit message
>>   - Drop comment for capacitive touch panel
>>   - Add simplefb regulators
>>   - Drop regulator-always-on for regulators that aren't critical
>>   - Fix CPU and GPU regulator supply mix-up
>>
>> ---
>>  arch/arm/boot/dts/Makefile               |   1 +
>>  arch/arm/boot/dts/sun6i-a31s-primo81.dts | 255 +++++++++++++++++++++++++++++++
>>  2 files changed, 256 insertions(+)
>>  create mode 100644 arch/arm/boot/dts/sun6i-a31s-primo81.dts
>>
>> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
>> index c00b72e750ab..78ade1a5e886 100644
>> --- a/arch/arm/boot/dts/Makefile
>> +++ b/arch/arm/boot/dts/Makefile
>> @@ -612,6 +612,7 @@ dtb-$(CONFIG_MACH_SUN6I) += \
>>       sun6i-a31-m9.dtb \
>>       sun6i-a31-mele-a1000g-quad.dtb \
>>       sun6i-a31s-cs908.dtb \
>> +     sun6i-a31s-primo81.dtb \
>>       sun6i-a31s-sina31s.dtb \
>>       sun6i-a31s-sinovoip-bpi-m2.dtb \
>>       sun6i-a31s-yones-toptech-bs1078-v2.dtb
>> diff --git a/arch/arm/boot/dts/sun6i-a31s-primo81.dts b/arch/arm/boot/dts/sun6i-a31s-primo81.dts
>> new file mode 100644
>> index 000000000000..2d4250b1faf8
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/sun6i-a31s-primo81.dts
>> @@ -0,0 +1,255 @@
>> +/*
>> + * Copyright 2014 Siarhei Siamashka <siarhei.siamashka@gmail.com>
>> + * Copyright 2015 Karsten Merker <merker@debian.org>
>> + * Copyright 2015 Chen-Yu Tsai <wens@csie.org>
>> + *
>> + * This file is dual-licensed: you can use it either under the terms
>> + * of the GPL or the X11 license, at your option. Note that this dual
>> + * licensing only applies to this file, and not this project as a
>> + * whole.
>> + *
>> + *  a) This file is free software; you can redistribute it and/or
>> + *     modify it under the terms of the GNU General Public License as
>> + *     published by the Free Software Foundation; either version 2 of the
>> + *     License, or (at your option) any later version.
>> + *
>> + *     This file is distributed in the hope that it will be useful,
>> + *     but WITHOUT ANY WARRANTY; without even the implied warranty of
>> + *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>> + *     GNU General Public License for more details.
>> + *
>> + * Or, alternatively,
>> + *
>> + *  b) Permission is hereby granted, free of charge, to any person
>> + *     obtaining a copy of this software and associated documentation
>> + *     files (the "Software"), to deal in the Software without
>> + *     restriction, including without limitation the rights to use,
>> + *     copy, modify, merge, publish, distribute, sublicense, and/or
>> + *     sell copies of the Software, and to permit persons to whom the
>> + *     Software is furnished to do so, subject to the following
>> + *     conditions:
>> + *
>> + *     The above copyright notice and this permission notice shall be
>> + *     included in all copies or substantial portions of the Software.
>> + *
>> + *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
>> + *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
>> + *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
>> + *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
>> + *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
>> + *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
>> + *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
>> + *     OTHER DEALINGS IN THE SOFTWARE.
>> + */
>> +
>> +/dts-v1/;
>> +#include "sun6i-a31s.dtsi"
>> +#include "sunxi-common-regulators.dtsi"
>> +
>> +#include <dt-bindings/gpio/gpio.h>
>> +#include <dt-bindings/input/input.h>
>> +#include <dt-bindings/pinctrl/sun4i-a10.h>
>> +
>> +/ {
>> +     model = "MSI Primo81 tablet";
>> +     compatible = "msi,primo81", "allwinner,sun6i-a31s";
>> +};
>> +
>> +&cpu0 {
>> +     cpu-supply = <&reg_dcdc3>;
>> +};
>> +
>> +&ehci0 {
>> +     /* rtl8188etv wifi is connected here */
>> +     status = "okay";
>> +};
>> +
>> +&i2c0 {
>> +     /* pull-ups and device VDDIO use AXP221 DLDO3 */
>> +     pinctrl-names = "default";
>> +     pinctrl-0 = <&i2c0_pins_a>;
>> +     status = "failed";
>> +};
>> +
>> +&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.

Regards
ChenYu