[Arm-netbook] microSD breakout board, suitable for debugging using tablets.

[Tom Cubie]

On 02/13/2012 12:38 PM, lkcl luke wrote:
> On Mon, Feb 13, 2012 at 2:06 AM, Tom Cubie<tangliang at allwinnertech.com>  wrote:
>> On 02/13/2012 09:43 AM, lkcl luke wrote:
>>> On Mon, Feb 13, 2012 at 1:18 AM, Tom Cubie<tangliang at allwinnertech.com>    wrote:
>>>
>>>> I can get the lcd console either. I have reported to the girl who
>>>> workson the display driver the problem. She is not interested and
>>>> will not look at it. She said it's no use in products :(
>>>    what, screens are of no use??
>> She means fb console,
>   ahh ok.  hm, that should be pretty straightforward.
>
>> showing the little penguin at boot time is
>> no use in products. The lcd driver is ok when playing some test
>> videos under linux cli, no display for the console.
>   it's usually pretty straightforward to get that up-and-running, boot
> params console=/dev/fb0 which obviously you can either set in the
> kernel config or directly into the linux kernel source code as the
> default _or_ set them in u-boot.  but you *have* to have the lcd etc.
> etc. "built-in" you cannot possibly hope to have that work if you've
> got it as a module, because, duh, it won't be loaded when it's needed,
> will it?? :)
>
>   btw if you've got a "working" system that you can actually boot up
> and get any kind of login / command-prompt (ssh over ethernet, serial
> console) then my favourite trick to see if things are working is just
> "echo shfjsafhajsfhsajfsadlf>  /dev/fb0" - if you see garbage in the
> top left corner of the lcd, it's working.
>
>   get that working first _then_ try sorting out the boot parameters.
>
> l.
>
> _______________________________________________
> arm-netbook mailing list arm-netbook at lists.phcomp.co.uk
> http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook
> Send large attachments to arm-netbook at files.phcomp.co.uk

Thank you for your clear explanation. I can get something on the lcd
when i "cat /dev/urandom > /dev/fb0". But as long as i open the kernel
config "Framebuffer Console support" the kernel can not boot up, and
hang at "[LCD] lcd_module_init". There is some problem of the display
driver. And after complaining many times to her(her seat is next to me),
she agreed to look at it when she has time.


-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.phcomp.co.uk/pipermail/arm-netbook/attachments/20120213/d197a158/attachment.html