[U-Boot] [PATCH] sunxi: Add generic defconfigs for A33 Q8 tablets with 1024x600 / 800x480 LCD

Hans de Goede
2015-09-25T08:06:46Z

Hi,

On 25-09-15 04:35, Chen-Yu Tsai wrote:
> On Thu, Sep 24, 2015 at 11:24 PM, Hans de Goede <hdegoede@redhat.com> wrote:

<snip>

>> diff --git a/configs/q8_a33_tablet_800x480_defconfig b/configs/q8_a33_tablet_800x480_defconfig
>> new file mode 100644
>> index 0000000..a9c2b62
>> --- /dev/null
>> +++ b/configs/q8_a33_tablet_800x480_defconfig
>> @@ -0,0 +1,24 @@
>> +CONFIG_ARM=y
>> +CONFIG_ARCH_SUNXI=y
>> +CONFIG_MACH_SUN8I_A33=y
>> +CONFIG_DRAM_CLK=456
>> +CONFIG_DRAM_ZQ=15291
>> +CONFIG_USB0_VBUS_PIN="AXP0-VBUS-ENABLE"
>> +CONFIG_USB0_VBUS_DET="AXP0-VBUS-DETECT"
>> +CONFIG_USB0_ID_DET="PH8"
>> +CONFIG_AXP_GPIO=y
>> +CONFIG_VIDEO_LCD_MODE="x:800,y:480,depth:18,pclk_khz:33000,le:87,ri:167,up:31,lo:13,hs:1,vs:1,sync:3,vmode:0"
>
> FYI my q8h-v1.5 uses a slightly different mode line:
>
> x:800,y:480,depth:18,pclk_khz:36000,le:45,ri:209,up:22,lo:22,hs:1,vs:1,sync:3,vmode:0

Yes, there are multiple modelines floating around for 800x480 panels, I've
2 A13 tablets and the modeline of the fex file from tablet a causes the images
to not be properly centered on the screen of tablet b. Luckily the other way
around does work, so for the q8_a13_tablet_defconfig I'm using the modeline
from the fex file from tablet b. I hope we can do something similar with q8
a23 and a33 800x480 tablets.

I've been buying q8 tablets with cracked screens (people seem to drop them quite
a lot) for cheap from a local 2nd hand website, so now I've 5 ever so slightly
different models, I still need to make a generic q8 config for those, and see if
I can find a modeline which works on all of them.

That modeline should probably be a good one to use for the a33 defconfig too.

> I'll find some time to give yours a test.

Thanks!

Regards,

Hans