meta-yadro/meta-vesnin/recipes-kernel/linux/linux-aspeed/0002-vesnin-remap-aspeed-uart.patch

From c10401d8c349610ea9cd29d28f87dd630c907aeb Mon Sep 17 00:00:00 2001
From: Alexander Filippov <a.filippov@yadro.com>
Date: Wed, 28 Mar 2018 17:46:28 +0300
Subject: [PATCH] vesnin: remap aspeed-uart

Remaps UART2 <-> UART3

Signed-off-by: Alexander Filippov <a.filippov@yadro.com>
---
 drivers/soc/aspeed/aspeed-lpc-ctrl.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/soc/aspeed/aspeed-lpc-ctrl.c b/drivers/soc/aspeed/aspeed-lpc-ctrl.c
index 01ed21e8bfee..cbdca53a8805 100644
--- a/drivers/soc/aspeed/aspeed-lpc-ctrl.c
+++ b/drivers/soc/aspeed/aspeed-lpc-ctrl.c
@@ -23,6 +23,7 @@
 
 #define HICR7 0x8
 #define HICR8 0xc
+#define HICRA 0x1c
 
 struct aspeed_lpc_ctrl {
 	struct miscdevice	miscdev;
@@ -271,6 +272,13 @@ static int aspeed_lpc_ctrl_probe(struct platform_device *pdev)
 		goto err;
 	}
 
+    /* Switch UART2 to IO3 and UART3 to IO2 */
+    rc = regmap_write(lpc_ctrl->regmap, HICRA, 0x00C80108);
+    if (rc) {
+        dev_err(dev, "Unable to switch UART 2<->3\n");
+        goto err;
+    }
+
 	return 0;
 
 err:
-- 
2.20.1