On Thu, Jun 7, 2018 at 4:35 PM, Hannes Schmelzer hannes@schmelzer.or.at wrote:
i'm actually trying to convert my i.mx6 boards to DM, many things are already doing well. But I've trouble getting the console (UART) runnin SPL.
The "preloader_console_init" is called very early in board_init_f, i guess that DM isn't ready at this point.
has anyone experience in this?
Yes I've faced the same, look like DEBUG Uart doesn't support low level init. Peng or someone can explain more.
When converting the OPOS6UL to DM, I had to move the preloader_console_init call into the spl_board_init function.
thanks for this hint, i also tried this. But unfortunately without success. But it is good to know that this way on your side works.
what i've done to try make it work:
add to my dts: chosen { stdout-path = &uart1; };
&uart1 { u-boot,dm-spl; u-boot,dm-preloc; status = "okay"; };
Don't you need pins muxing properties in uart1 ( pinctrl-names / pinctrl-0 ) ?
so the device should be present during spl stage and console should be set to it.
# Serial drivers # CONFIG_BAUDRATE=115200 CONFIG_SERIAL_PRESENT=y CONFIG_SPL_SERIAL_PRESENT=y CONFIG_DM_SERIAL=y CONFIG_SPL_DM_SERIAL=y CONFIG_MXC_UART=y
maybe i'm still missing something.
Finally converting the tips from Sebastian in addition with converting "CONFIG_SPL_BOARD_INIT" to Kconfig did the trick. Don't know why there is a difference, but doesn't matter since defining such stuff in board-config-header is deprecated.
imx6ul seems working for me with DM_SERIAL, i.MX6QDL has still not getting console.