[U-Boot] Sdcard boot for a generic allwinner q8 clone A33 tablet not work.

Hi, i'm trying to boot a classic A33 q8 clone with uboot copied in sdcard but nothing happen (not backlight on)
dd if=u-boot-sunxi-with-spl.bin of=/dev/sdb bs=1024 seek=8 on the partitioned sdcard for reference
if i compile with configuration for A13 based tablet on A13 based tablet it work like charm, so i suppose i'm not in wrong in my setup, how can i debug ?
I dont have sd/usart adapter so i cannot boot from fel, there is a way to make blink backlight to understand if it is working and is an lcd problem ?
On original android it work perfectly.
I attach original fex and .configure for your references.
Thank

Hi,
On 09-09-16 14:10, far5893 wrote:
Hi, i'm trying to boot a classic A33 q8 clone with uboot copied in sdcard but nothing happen (not backlight on)
dd if=u-boot-sunxi-with-spl.bin of=/dev/sdb bs=1024 seek=8 on the partitioned sdcard for reference
In my experience the A33 can be a bit picky wrt which sdcards it will boot from. Sometimes simply doing the dd again will help, sometimes using a different sdcard will help.
Regards,
Hans
if i compile with configuration for A13 based tablet on A13 based tablet it work like charm, so i suppose i'm not in wrong in my setup, how can i debug ?
I dont have sd/usart adapter so i cannot boot from fel, there is a way to make blink backlight to understand if it is working and is an lcd problem ?
On original android it work perfectly.
I attach original fex and .configure for your references.
Thank
U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot

Hans de Goede wrote:
Hi,
On 09-09-16 14:10, far5893 wrote:
Hi, i'm trying to boot a classic A33 q8 clone with uboot copied in sdcard but nothing happen (not backlight on)
dd if=u-boot-sunxi-with-spl.bin of=/dev/sdb bs=1024 seek=8 on the partitioned sdcard for reference
In my experience the A33 can be a bit picky wrt which sdcards it will boot from. Sometimes simply doing the dd again will help, sometimes using a different sdcard will help.
I try Sandisk ultra 32Gb,Samsung EVO 32Gb, adata 16GB no difference but ok with A13 (and on a33 original android they are correctly detected), i suppose that i can only wait developers make more test with more hardware, if i can help i'm here.
Now i'm on 2016.09-rc2.
Thanks
participants (2)
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far5893
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Hans de Goede