diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/819-uart-0006-tty-serial-fsl_lpuart-enable-loopback-mode.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/819-uart-0006-tty-serial-fsl_lpuart-enable-loopback-mode.patch | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/819-uart-0006-tty-serial-fsl_lpuart-enable-loopback-mode.patch b/target/linux/layerscape/patches-5.4/819-uart-0006-tty-serial-fsl_lpuart-enable-loopback-mode.patch new file mode 100644 index 0000000000..f643b27dda --- /dev/null +++ b/target/linux/layerscape/patches-5.4/819-uart-0006-tty-serial-fsl_lpuart-enable-loopback-mode.patch @@ -0,0 +1,29 @@ +From 4dc6f2b9d454099445b8bc3a4a6328761335ce4d Mon Sep 17 00:00:00 2001 +From: Fugang Duan <fugang.duan@nxp.com> +Date: Wed, 11 Sep 2019 16:23:25 +0800 +Subject: [PATCH] tty: serial: fsl_lpuart: enable loopback mode + +Enable lpuart32 loopback mode. + +Signed-off-by: Fugang Duan <fugang.duan@nxp.com> +--- + drivers/tty/serial/fsl_lpuart.c | 8 ++++++++ + 1 file changed, 8 insertions(+) + +--- a/drivers/tty/serial/fsl_lpuart.c ++++ b/drivers/tty/serial/fsl_lpuart.c +@@ -1464,6 +1464,14 @@ static void lpuart32_set_mctrl(struct ua + temp |= UARTMODIR_TXCTSE; + + lpuart32_write(port, temp, UARTMODIR); ++ ++ temp = lpuart32_read(port, UARTCTRL); ++ if (mctrl & TIOCM_LOOP) ++ temp |= UARTCTRL_LOOPS; ++ else ++ temp &= ~UARTCTRL_LOOPS; ++ ++ lpuart32_write(port, temp, UARTCTRL); + } + + static void lpuart_break_ctl(struct uart_port *port, int break_state) |