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- From 1b00d871c9aaa05583b50abb5ba7dfb4ed8bc4f1 Mon Sep 17 00:00:00 2001
- From: Peng Fan <[email protected]>
- Date: Mon, 16 Dec 2019 15:53:00 +0800
- Subject: [PATCH] LF-484 tty: serial: lpuart: support UPIO_MEM32 for lpuart32
- "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 <[email protected]>
- Signed-off-by: Peng Fan <[email protected]>
- ---
- drivers/tty/serial/fsl_lpuart.c | 4 +++-
- 1 file changed, 3 insertions(+), 1 deletion(-)
- --- a/drivers/tty/serial/fsl_lpuart.c
- +++ b/drivers/tty/serial/fsl_lpuart.c
- @@ -2598,7 +2598,9 @@ static int __init lpuart32_early_console
- 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;
- }
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