1 files changed, 68 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/819-uart-0012-tty-serial-lpuart-add-LS1028A-support.patch b/target/linux/layerscape/patches-5.4/819-uart-0012-tty-serial-lpuart-add-LS1028A-support.patch
new file mode 100644
index 0000000000..a4cb65cfec
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/819-uart-0012-tty-serial-lpuart-add-LS1028A-support.patch
@@ -0,0 +1,68 @@
+From 932dac0380bbf7276d4111c35674679bc9ad6384 Mon Sep 17 00:00:00 2001
+From: Vabhav Sharma <vabhav.sharma@nxp.com>
+Date: Thu, 31 Oct 2019 19:20:47 +0530
+Subject: [PATCH] tty: serial: lpuart: add LS1028A support
+
+NXP LS1028A lpuart is the same IP as LS1021A, but it is
+little endian for register accessing instead of big endian
+on LS1021A.
+
+So add LS1028A matching data to distiguish the chips.
+
+Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
+Signed-off-by: Vabhav Sharma <vabhav.sharma@nxp.com>
+Acked-by: Fugang Duan <fugang.duan@nxp.com>
+---
+ drivers/tty/serial/fsl_lpuart.c | 14 ++++++++++++--
+ 1 file changed, 12 insertions(+), 2 deletions(-)
+
+--- a/drivers/tty/serial/fsl_lpuart.c
++++ b/drivers/tty/serial/fsl_lpuart.c
+@@ -3,6 +3,7 @@
+  *  Freescale lpuart serial port driver
+  *
+  *  Copyright 2012-2014 Freescale Semiconductor, Inc.
++ *  Copyright 2019 NXP
+  */
+ 
+ #if defined(CONFIG_SERIAL_FSL_LPUART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+@@ -260,6 +261,7 @@ static DEFINE_IDA(fsl_lpuart_ida);
+ enum lpuart_type {
+ 	VF610_LPUART,
+ 	LS1021A_LPUART,
++	LS1028A_LPUART,
+ 	IMX7ULP_LPUART,
+ 	IMX8QXP_LPUART,
+ };
+@@ -311,13 +313,20 @@ static const struct lpuart_soc_data vf_d
+ 	.rx_dma_cyclic = true,
+ };
+ 
+-static const struct lpuart_soc_data ls_data = {
++static const struct lpuart_soc_data ls1021a_data = {
+ 	.devtype = LS1021A_LPUART,
+ 	.iotype = UPIO_MEM32BE,
+ 	.rx_watermark = 0,
+ 	.rx_dma_cyclic = true,
+ };
+ 
++static const struct lpuart_soc_data ls1028a_data = {
++	.devtype = LS1028A_LPUART,
++	.iotype = UPIO_MEM32,
++	.rx_watermark = 0,
++	.rx_dma_cyclic = true,
++};
++
+ static struct lpuart_soc_data imx7ulp_data = {
+ 	.devtype = IMX7ULP_LPUART,
+ 	.iotype = UPIO_MEM32,
+@@ -336,7 +345,8 @@ static struct lpuart_soc_data imx8qxp_da
+ 
+ static const struct of_device_id lpuart_dt_ids[] = {
+ 	{ .compatible = "fsl,vf610-lpuart",	.data = &vf_data, },
+-	{ .compatible = "fsl,ls1021a-lpuart",	.data = &ls_data, },
++	{ .compatible = "fsl,ls1021a-lpuart",	.data = &ls1021a_data, },
++	{ .compatible = "fsl,ls1028a-lpuart",	.data = &ls1028a_data, },
+ 	{ .compatible = "fsl,imx7ulp-lpuart",	.data = &imx7ulp_data, },
+ 	{ .compatible = "fsl,imx8qxp-lpuart",	.data = &imx8qxp_data, },
+ 	{ /* sentinel */ }