Hi Michael, On Thu, May 15, 2025 at 5:12 PM Michael Nazzareno Trimarchi <mich...@amarulasolutions.com> wrote:
> The serial is not up at that time so we need to buffer the error and print > later. Right now > we are working on other fixes Please share more details about the boot problem on the imx8mn_bsh_smm_s2 board. Does a hang occur at SPL? Do you get anything in the console? The mx8mn_bsh_smm_s2 board uses UART4 as the console. The other i.MX8MN boards where we tested this patch used UART2. UART4 does not have U-Boot/Linux permission by default. TF-A enables the other UART port permission access at: https://github.com/ARM-software/arm-trusted-firmware/blob/v2.12/plat/imx/imx8m/imx8mn/imx8mn_bl31_setup.c#L124-L143 Is the UART clock access falling in your case? Is clk_enable_bulk() the one that fails?
