[PATCH] led: Configure LED default-state on boot

[Patrice CHOTARD]

On 4/21/22 17:18, Marek Vasut wrote:
> On 4/21/22 17:09, Patrice CHOTARD wrote:
>> Hi Marek
> 
> Hi,
> 
>> I tested the current U-Boot master branch (22bfaa1f673ab5442dfb9778eea4c9a18dee42d0)
>> This patch is breaking the boot sequence on stm32mp157c-dk2.
> 
> Breaking it ... how ? What happens, hang ?

Here is the boot log :

U-Boot SPL 2022.04-00827-g22bfaa1f67 (Apr 21 2022 - 17:22:47 +0200)
RAM: DDR3-DDR3L 16bits 533000kHz
WDT:   Started watchdog at 5a002000 with servicing (32s timeout)


U-Boot 2022.04-00827-g22bfaa1f67 (Apr 21 2022 - 17:22:47 +0200)

CPU: STM32MP157CAC Rev.B
Model: STMicroelectronics STM32MP157C-DK2 Discovery Board
Board: stm32mp1 in basic mode (st,stm32mp157c-dk2)
Board: MB1272 Var2.0 Rev.C-01
DRAM:  512 MiB
Clocks:
- MPU : 0 MHz
- MCU : 0 MHz
- AXI : 0 MHz
- PER : 0 MHz
- DDR : 0 MHz
clock rate is 0
clock rate is 0
clock rate is 0
clock rate is 0
clock rate is 0
cloc

What worried me is that all clocks are set to 0 (MPU/MCU/AXI ....)...no direct link with the led-uclass update.
For information, if i comment the device_probe(dev) in led_post_bind(), it avoid the hang.

Thanks
Patrice