openwrt/target/linux/layerscape/patches-5.4/819-uart-0011-serial-fsl_lpuart-enable-two-stop-bits.patch
John Audia b4c02c9998 kernel: bump 5.4 to 5.4.73
Removed upstreamed patches:
 generic/pending-5.4
   445-mtd-spinand-gigadevice-Only-one-dummy-byte-in-QUA.patch
   446-mtd-spinand-gigadevice-Add-QE-Bit.patch
 pistachio/patches-5.4
   150-pwm-img-Fix-null-pointer-access-in-probe.patch

Manually rebased:
 layerscape/patches-5.4
   801-audio-0011-Revert-ASoC-fsl_sai-add-of_match-data.patch
   801-audio-0039-MLK-16224-6-ASoC-fsl_sai-fix-DSD-suspend-resume.patch
   801-audio-0073-MLK-21957-3-ASoC-fsl_sai-add-bitcount-and-timestamp-.patch
   820-usb-0009-usb-dwc3-Add-workaround-for-host-mode-VBUS-glitch-wh.patch

All modifications made by update_kernel.sh

Build system: x86_64
Build-tested: ipq806x/R7800, ath79/generic, bcm27xx/bcm2711,
              mvebu (mamba, rango), x86_64, ramips/mt7621
Run-tested: ipq806x/R7800, mvebu (mamba, rango), x86_64, ramips (RT-AC57U)

No dmesg regressions, everything functional

Signed-off-by: John Audia <graysky@archlinux.us>
[alter 820-usb-0009-usb-dwc3-Add-workaround-for-host-mode-VBUS-glitch-wh]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
2020-11-01 14:44:06 +01:00

50 lines
1.7 KiB
Diff

From 5f1a35c3f5c17cc6229873248a56784fcd03db1c Mon Sep 17 00:00:00 2001
From: Fugang Duan <fugang.duan@nxp.com>
Date: Fri, 27 Sep 2019 15:18:41 +0800
Subject: [PATCH] serial: fsl_lpuart: enable two stop bits
Add two stop bits support.
User can run the command to enable two stop bits
for test: stty cstopb -F /dev/ttyLPx
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
---
drivers/tty/serial/fsl_lpuart.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -2109,11 +2109,12 @@ lpuart32_set_termios(struct uart_port *p
{
struct lpuart_port *sport = container_of(port, struct lpuart_port, port);
unsigned long flags;
- unsigned long ctrl, old_ctrl, modem;
+ unsigned long ctrl, old_ctrl, bd, modem;
unsigned int baud;
unsigned int old_csize = old ? old->c_cflag & CSIZE : CS8;
ctrl = old_ctrl = lpuart32_read(&sport->port, UARTCTRL);
+ bd = lpuart32_read(&sport->port, UARTBAUD);
modem = lpuart32_read(&sport->port, UARTMODIR);
/*
* only support CS8 and CS7, and for CS7 must enable PE.
@@ -2150,7 +2151,9 @@ lpuart32_set_termios(struct uart_port *p
}
if (termios->c_cflag & CSTOPB)
- termios->c_cflag &= ~CSTOPB;
+ bd |= UARTBAUD_SBNS;
+ else
+ bd &= ~UARTBAUD_SBNS;
/* parity must be enabled when CS7 to match 8-bits format */
if ((termios->c_cflag & CSIZE) == CS7)
@@ -2220,6 +2223,7 @@ lpuart32_set_termios(struct uart_port *p
lpuart32_write(&sport->port, old_ctrl & ~(UARTCTRL_TE | UARTCTRL_RE),
UARTCTRL);
+ lpuart32_write(&sport->port, bd, UARTBAUD);
lpuart32_serial_setbrg(sport, baud);
lpuart32_write(&sport->port, modem, UARTMODIR);
lpuart32_write(&sport->port, ctrl, UARTCTRL);