Re: [PATCH v11 33/56] Input: atmel_mxt_ts - delay enabling IRQ when not using regulators

[Wang, Jiada]

Hello Dmitry

On 2020/05/17 22:26, Dmitry Osipenko wrote:
> 17.05.2020 16:08, Dmitry Osipenko ÐÐÑÐÑ:
> > 17.05.2020 06:32, Wang, Jiada ÐÐÑÐÑ:
> > > Hello Dmitry
> > >
> > > On 2020/05/14 13:53, Dmitry Osipenko wrote:
> > > > 13.05.2020 08:07, Wang, Jiada ÐÐÑÐÑ:
> > > > > Hello Dmitry
> > > > >
> > > > > On 2020/05/12 8:13, Dmitry Osipenko wrote:
> > > > > > 11.05.2020 05:05, Wang, Jiada ÐÐÑÐÑ:
> > > > > > > Hello Dmitry
> > > > > > >
> > > > > > > Thanks for your comment and test,
> > > > > > >
> > > > > > > can you let me know which platform (board) you are using for test,
> > > > > > > and DTS changes if you have added any.
> > > > > >
> > > > > > That's this device-tree [1] without any extra changes.
> > > > > I am using Samsung Chromebook Pro for testing,
> > > > > but obviously some of the use cases it can't cover.
> > > > >
> > > > > I also would like to test on same device you are using,
> > > > > would you please let me know how to boot Acer Iconia Tab A500
> > > > > with custom images. Are you booting Linux or Android on it?
> > > >
> > > > I'm using Ubuntu 20.04 on it at the moment. In order to boot custom
> > > > images you'll need at least to install a custom recovery, which will
> > > > allow to flash boot.img on eMMC storage.
> > > >
> > > > Ideally, you'll need to install an unlocked bootloader that will enable
> > > > Android's fastboot, and thus, allow to easily boot kernel zImage without
> > > > messing with flashing boot images.
> > > >
> > > > Could you please tell what is the current state of yours device: does it
> > > > have a stock Android installed? is it rooted? is custom recovery
> > > > installed?
> > > Thanks for your information
> > >
> > > By following instructions found in XDA forums,
> > > now I am able to install an unlocked bootloader,
> > > boot among primary kernel, recovery kernel or fastboot,
> > > an Android custom stock rom also has been installed
> >
> > Awesome!
> >
> > > Could you please let me know how to install local built ubuntu images
> >
> > Sure, please follow these steps:
> >
> > 1. Download rootfs from
> > http://cdimage.ubuntu.com/ubuntu-base/releases/20.04/release/ubuntu-base-20.04-base-armhf.tar.gz
> >
> > 2. Extract it wherever you want yours root to be, like ExternalSD card
> > or eMMC /data partition or even NFS directory if you'll use usbnet.
> >
> > 3. Clone this kernel https://github.com/grate-driver/linux which is a
> > recent upstream linux-next + work-in-progress patches that haven't been
> > merged into upstream yet. For example DRM bridges and Tegra Partition
> > Table patches are under review now.
> >
> > 4. Select tegra_defconfig:
> >
> > 	ARCH=arm make tegra_defconfig
> >
> > 5. Compile kernel:
> >
> > 	ARCH=arm make
> >
> > 6. Append DTB to zImage:
> >
> > 	cat arch/arm/boot/zImage
> > arch/arm/boot/dts/tegra20-acer-a500-picasso.dtb > arch/arm/boot/zImage-dtb
> >
> > 7. Turn on A500 and select 'fastboot' option in the bootloader's menu.
> >
> > 8. Boot compiled kernel:
> >
> > 	fastboot -c "root=/dev/mmcblk2p8 gpt tegraboot=sdmmc" boot
> > arch/arm/boot/zImage-dtb
> >
> > 9. Grab touchscreen/WiFi/Bluetooth firmware files from
> > https://github.com/digetx/linux-firmware
> >
> > 10. Grab ALSA UCM rule from https://github.com/digetx/alsa-ucm-conf
> >
> > 11. Enjoy!
> >
> > Please let me know you'll experience any problems, I'll be glad to help.
>
> Also, there is an Ubuntu PPA for Tegra20/30 devices with drivers from
> GRATE-driver project:
> https://launchpad.net/~grate-driver/+archive/ubuntu/ppa
>
> Please keep in mind that there is no GL driver that work with upstream
> kernel.
>
> I'd recommend to use KDE Plasma 5 for the desktop environment. For the
> good experience you'll need to tell Qt to use software render, the
> easiest way is to set required env variables globally:
>
> echo -e
> "QT_QUICK_BACKEND=software\nLIBGL_ALWAYS_SOFTWARE=1\nQT_IM_MODULE=qtvirtualkeyboard"
> > > /etc/security/pam_env.conf

Thanks for detailed information to help me boot ubuntu on acer tab a500,
now I am able to boot it with ubuntu and reproduced the issue with v11 
patch-set.

I will start to investigate the root cause,
from now on, my update patch-set will be tested on both samsung 
chromebook pro and acer tab a500

Thanks for your help

Thanks,
Jiada