Hi Andrey,
On Mon, Feb 22, 2021 at 9:19 AM Fabio Estevam festevam@gmail.com wrote:
The issue now is that saving the environment to the SD card is no longer working.
I will investigate the SD card issue now.
This was caused by the following commit:
commit 247bbeb74c186963d9365db3136d0285618bd9a7 Author: Andrey Zhizhikin andrey.zhizhikin@leica-geosystems.com Date: Sat Dec 5 17:29:17 2020 +0000
ARM: dts: imx8m: increase off-on delay on the SD Vcc regulator
Some SD Card controller and power circuitry has increased capacitance, which keeps the internal logic remains powered after regulator is switch off. This is generally the case when card is switched to SD104 mode, where a power cycle should be performed. In case if the card internal logic remains powered, it causes a subsequent failure of mode transition, effectively leading to failed enumeration.
Introduce a delay of 20 msec in order to provide a possibility for internal card circuitry to drain voltages and perform a power cycle correctly.
Similar fix is done in commit c49d0ac38a76 ("ARM: dts: rmobile: Increase off-on delay on the SD Vcc regulator") targeted Renesas SOCs.
Signed-off-by: Andrey Zhizhikin andrey.zhizhikin@leica-geosystems.com Cc: Stefano Babic sbabic@denx.de
I will send a fix.
Thanks,
Fabio Estevam