On Sat, Aug 13, 2022 at 06:31:56PM +0300, Matwey V. Kornilov wrote: > чт, 11 авг. 2022 г. в 19:11, Matwey V. Kornilov : > > > > чт, 11 авг. 2022 г. в 15:53, Alex Kiernan : > > > > > > On Thu, Aug 11, 2022 at 1:46 PM Tom Rini wrote: > > > > > > > > On Thu, Aug 11, 2022 at 10:47:18AM +0300, Matwey V. Kornilov wrote: > > > > > > > > > Can somebody please advise me working CONFIG_DEBUG_UART _* values for > > > > > the board? I think I need to obtain some output from the board to > > > > > debug it further. > > > > > > > > Reading arch/arm/dts/am33xx-l4.dtsi isn't as easy to read as I would > > > > personally like but 0x44e09000 is UART0 and so forth. Updating > > > > doc/board/ti/am335x_evm.rst once you're done with a note about using > > > > DEBUG_UART would be appreciated, thanks. > > > > > > > > > > Some notes I have from a previous life which may be useful, but I'm > > > afraid I've no way of checking these days: > > > > > > * CONFIG_DEBUG_UART=y > > > * CONFIG_DEBUG_UART_BASE=0x44e09000 > > > * CONFIG_DEBUG_UART_CLOCK=48000000 > > > * CONFIG_DEBUG_UART_OMAP=y > > > * CONFIG_DEBUG_UART_SHIFT=2 > > > * CONFIG_DEBUG_UART_BOARD_INIT=y > > > * CONFIG_DEBUG_UART_ANNOUNCE=y > > > > > > > Thanks. Unfortunately, these don't work. > > Ok. The settings were working before 0dba4586 ("arm: Init the debug UART") Simon, any ideas? This is on am335x_evm_defconfig, for example. -- Tom