From: Peng Fan <peng.fan@xxxxxxx> "earlycon" no need to specify the value string since it uses stdout-path parameters. However when earlycon and normal console are not using the same uart port, we need specify value string to earlycon, this is what we need to do when support dual linux using jailhouse hypervisor. The 2nd linux will use the uart of the 1st linux as earlycon. earlycon=lpuart32,mmio32,0x5a060010,115200 not work for i.MX8QXP. It is because lpuart32_early_console_setup not support little endian. Since the original code is to support UPIO_MEM32BE, so if not UPIO_MEM32, we still take it as UPIO_MEM32BE Acked-by: Fugang Duan <fugang.duan@xxxxxxx> Signed-off-by: Peng Fan <peng.fan@xxxxxxx> --- drivers/tty/serial/fsl_lpuart.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index 54c7735406f8..6ad0af073e62 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -2376,7 +2376,9 @@ static int __init lpuart32_early_console_setup(struct earlycon_device *device, if (!device->port.membase) return -ENODEV; - device->port.iotype = UPIO_MEM32BE; + if (device->port.iotype != UPIO_MEM32) + device->port.iotype = UPIO_MEM32BE; + device->con->write = lpuart32_early_write; return 0; } -- 2.16.4
