openwrt/target/linux/layerscape/patches-5.4/819-uart-0004-MLK-18137-fsl_lpuart-Fix-loopback-mode.patch
John Audia d15db2fe4d kernel: bump 5.4 to 5.4.134
All patches automatically rebased.

Build system: x86_64
Build-tested: ipq806x/R7800
Run-tested: ipq806x/R7800

Signed-off-by: John Audia <graysky@archlinux.us>
2021-07-25 13:52:38 +02:00

29 lines
1.1 KiB
Diff

From 392865cdcca83fbc9624725e505feb31dda7e67a Mon Sep 17 00:00:00 2001
From: Andy Duan <fugang.duan@nxp.com>
Date: Mon, 28 Jan 2019 14:29:14 +0800
Subject: [PATCH] MLK-18137: fsl_lpuart: Fix loopback mode
Register offset needs to be applied on mapbase also.
dma_tx/rx_request use the physical address of UARTDATA.
Register offset is currently only applied to membase (the
corresponding virtual addr) but not on mapbase.
Reviewed-by: Leonard Crestez <leonard.crestez@nxp.com>
Acked-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Adriana Reus <adriana.reus@nxp.com>
---
drivers/tty/serial/fsl_lpuart.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -2479,7 +2479,7 @@ static int lpuart_probe(struct platform_
return PTR_ERR(sport->port.membase);
sport->port.membase += sdata->reg_off;
- sport->port.mapbase = res->start;
+ sport->port.mapbase = res->start + sdata->reg_off;
sport->port.dev = &pdev->dev;
sport->port.type = PORT_LPUART;
sport->devtype = sdata->devtype;