Re: [U-Boot] [linux-sunxi] Re: [PATCH] sunxi: Add Gemei G9 (Allwinner A10/sun4i) tablet

[Priit Laes]

On Thu, 2015-01-22 at 09:47 +0200, Siarhei Siamashka wrote:
> On Tue, 20 Jan 2015 15:43:31 +0100
> Hans de Goede  wrote:
> 
> > Hi,
[...]
> 
> We have already talked with plaes on IRC yesterday, just now 
> bringing it here. I have finally updated the 
> http://linux-sunxi.org/LCD page to add LVDS panels data and now for 
> Gemei_G9 we have the following settings there:
> 
> CONFIG_VIDEO_LCD_MODE="x:1024,y:768,depth:24,pclk_khz:10,le:799,ri:260,up:15,lo:16,hs:1,vs:1,sync:3,vmode:0"
> 
> CONFIG_VIDEO_LCD_PANEL_LVDS=y
> # warning: unsupported 'lcd_lvds_mode' : 1
> CONFIG_VIDEO_LCD_POWER="PH8"
> CONFIG_VIDEO_LCD_BL_EN="PH7"
> CONFIG_VIDEO_LCD_BL_PWM="PB2"
> 
> It's good that lcd_lvds_mode=1 apparently works without problems, 
> while this was not fully expected according to
> http://lists.denx.de/pipermail/u-boot/2015-January/200168.html
> 
> Also confirming whether 18-bit or 24-bit is the correct color
> depth would be a good idea. This tablet has 'lcd_frm = 1' and 
> 'lcd_lvds_bitwidth = 0' in fex.
> 

So I tried the 24bit depth setting and it messed up some of the colors 
(though black remained black and white remained white) in the penguin 
image in top left corner. Therefore this tablet seems to have 18bit 
LCD.


Päikest,
Priit :)
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Re: [U-Boot] [linux-sunxi] Re: [PATCH] sunxi: Add Gemei G9 (Allwinner A10/sun4i) tablet

[Siarhei Siamashka]

On Tue, 20 Jan 2015 15:43:31 +0100
Hans de Goede  wrote:

> Hi,
> 
> On 19-01-15 21:16, Priit Laes wrote:
> > Gemei G9 is an A10 based tablet, with 1G RAM, 16G NAND, 1024x768
> > IPS LCD display, stereo speakers, 1.3MP front camera and 5 MP
> > rear camera, 8000mAh battery, GT901 2+1 touchscreen, Bosch BMA250
> > accelerometer and RTL8188CUS USB wifi. It also has MicroSD slot,
> > miniHDMI, 1 x MicroUSB OTG port and 1 x MicroUSB host port and
> > 3.5mm headphone jack.
> > More details are available at: http://linux-sunxi.org/Gemei_G9
> >
> > Signed-off-by: Priit Laes 
> 
> Thanks, queued up in u-boot-sunxi/next for merging into v2015.04
> 
> Regards,
> 
> Hans
> 
> > ---
> >   board/sunxi/MAINTAINERS  |  5 +
> >   configs/sunxi_Gemei_G9_defconfig | 20 
> >   2 files changed, 25 insertions(+)
> >   create mode 100644 configs/sunxi_Gemei_G9_defconfig

[...]

> > +CONFIG_VIDEO_LCD_MODE="x:1024,y:768,depth:18,pclk_khz:10,le:799,ri:260,up:15,lo:16,hs:1,vs:1,sync:3,vmode:0"
> > +CONFIG_VIDEO_LCD_PANEL_LVDS=y
> > +CONFIG_VIDEO_LCD_POWER="PH8"
> > +CONFIG_VIDEO_LCD_BL_EN="PH7"
> > +CONFIG_VIDEO_LCD_BL_PWM="PB2"

We have already talked with plaes on IRC yesterday, just now bringing it
here. I have finally updated the http://linux-sunxi.org/LCD page to add
LVDS panels data and now for Gemei_G9 we have the following settings
there:

CONFIG_VIDEO_LCD_MODE="x:1024,y:768,depth:24,pclk_khz:10,le:799,ri:260,up:15,lo:16,hs:1,vs:1,sync:3,vmode:0"
CONFIG_VIDEO_LCD_PANEL_LVDS=y
# warning: unsupported 'lcd_lvds_mode' : 1
CONFIG_VIDEO_LCD_POWER="PH8"
CONFIG_VIDEO_LCD_BL_EN="PH7"
CONFIG_VIDEO_LCD_BL_PWM="PB2"

It's good that lcd_lvds_mode=1 apparently works without problems, while
this was not fully expected according to
http://lists.denx.de/pipermail/u-boot/2015-January/200168.html

Also confirming whether 18-bit or 24-bit is the correct color
depth would be a good idea. This tablet has 'lcd_frm = 1' and
'lcd_lvds_bitwidth = 0' in fex.

-- 
Best regards,
Siarhei Siamashka
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