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Manually rebased patches: bcm27xx/patches-5.4/950-0135-spi-spi-bcm2835-Disable-forced-software-CS.patch generic-backport/744-v5.5-net-sfp-soft-status-and-control-support.patch layerscape/patches-5.4/819-uart-0005-tty-serial-fsl_lpuart-enable-dma-mode-for-imx8qxp.patch mvebu/patches-5.4/521-arm64-dts-marvell-espressobin-Add-ethernet-switch-al.patch Removed: layerscape/patches-5.4/819-uart-0012-tty-serial-lpuart-add-LS1028A-support.patch All modifications made by update_kernel.sh Build system: x86_64 Build-tested: ipq806x/R7800, ath79/generic, bcm27xx/bcm2711, lantiq/Easybox 904 xDSL, x86_64 Run-tested: ipq806x/R7800, lantiq/Easybox 904 xDSL, x86_64 No dmesg regressions, everything functional Signed-off-by: John Audia <graysky@archlinux.us> Co-developed-by: Adrian Schmutzler <freifunk@adrianschmutzler.de> Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
30 lines
838 B
Diff
30 lines
838 B
Diff
From 4dc6f2b9d454099445b8bc3a4a6328761335ce4d Mon Sep 17 00:00:00 2001
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From: Fugang Duan <fugang.duan@nxp.com>
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Date: Wed, 11 Sep 2019 16:23:25 +0800
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Subject: [PATCH] tty: serial: fsl_lpuart: enable loopback mode
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Enable lpuart32 loopback mode.
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Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
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---
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drivers/tty/serial/fsl_lpuart.c | 8 ++++++++
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1 file changed, 8 insertions(+)
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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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@@ -1477,6 +1477,14 @@ static void lpuart32_set_mctrl(struct ua
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temp |= UARTMODIR_TXCTSE;
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lpuart32_write(port, temp, UARTMODIR);
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+
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+ temp = lpuart32_read(port, UARTCTRL);
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+ if (mctrl & TIOCM_LOOP)
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+ temp |= UARTCTRL_LOOPS;
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+ else
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+ temp &= ~UARTCTRL_LOOPS;
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+
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+ lpuart32_write(port, temp, UARTCTRL);
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}
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static void lpuart_break_ctl(struct uart_port *port, int break_state)
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