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At present the pinctrl nodes are not enabled in pre-relocation U-Boot so the UARTs do not correctly select the pinconfig to enable the UART pins. Fix this so that the U-Boot banner is printed. This fixes serial output on rpi_3b_32b with the following config.txt options: enable_uart=1 gpu_freq=250 Signed-off-by: Simon Glass <sjg@chromium.org> Fixes: 9821636b64 (bcm2835_pinctrl: Probe pre-reloc) Signed-off-by: Matthias Brugger <mbrugger@suse.com>