0eda713b9b
So far we have seen two different clock setups for the Raspberry Pi 4 board, with the VPU clock divider being different. This was handled by reading the divider register and adjusting the base clock rate accordingly. Recently a new GPU firmware version appeared that changed the clock rate *again*, though this time at a higher level, so the VPU rate (and the apparent PLLC parent clock) did not seem to change, judging by reading the clock registers. So rather than playing cat and mouse with the GPU firmware or going further down the rabbit hole of exploring the whole clock tree, let's just skip the baud rate programming altogether. This works because the GPU firmware actually sets up and programs the debug UART already, so we can just use it. Pass 0 as the base clock rate to let the console driver skip the setup, also remove the no longer needed clock code. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Change-Id: Ica88a3f3c9c11059357c1e6dd8f7a4d9b1f98fd7 |
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