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38 lines
1.3 KiB
Diff
38 lines
1.3 KiB
Diff
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From 1b00d871c9aaa05583b50abb5ba7dfb4ed8bc4f1 Mon Sep 17 00:00:00 2001
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From: Peng Fan <peng.fan@nxp.com>
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Date: Mon, 16 Dec 2019 15:53:00 +0800
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Subject: [PATCH] LF-484 tty: serial: lpuart: support UPIO_MEM32 for lpuart32
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"earlycon" no need to specify the value string since it uses
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stdout-path parameters. However when earlycon and normal console
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are not using the same uart port, we need specify value string
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to earlycon, this is what we need to do when support dual linux
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using jailhouse hypervisor. The 2nd linux will use the uart
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of the 1st linux as earlycon.
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earlycon=lpuart32,mmio32,0x5a060010,115200 not work for i.MX8QXP.
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It is because lpuart32_early_console_setup not support little endian.
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Since the original code is to support UPIO_MEM32BE, so if not
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UPIO_MEM32, we still take it as UPIO_MEM32BE
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Acked-by: Fugang Duan <fugang.duan@nxp.com>
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Signed-off-by: Peng Fan <peng.fan@nxp.com>
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---
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drivers/tty/serial/fsl_lpuart.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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--- a/drivers/tty/serial/fsl_lpuart.c
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+++ b/drivers/tty/serial/fsl_lpuart.c
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@@ -2600,7 +2600,9 @@ static int __init lpuart32_early_console
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if (!device->port.membase)
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return -ENODEV;
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- device->port.iotype = UPIO_MEM32BE;
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+ if (device->port.iotype != UPIO_MEM32)
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+ device->port.iotype = UPIO_MEM32BE;
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+
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device->con->write = lpuart32_early_write;
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return 0;
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}
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