Using mainline u-boot (2023.01) I try to configure UART0 I/O pins for the SPL.
In the kernel and u-boot proper, this is done via a pinctrl-node in the devicetree. However u-boot 'strips' the devicetree for the SPL and removes the pinctrl node.
I removed pinctrl from CONFIG_OF_SPL_REMOVE_PROPS in the u-boot configuration.
What is the preferred way for configuration of IO MUX in u-boot SPL for ZynqMP ? Hardcoded in a board setup file ?
