From: Ye Li <ye.li@nxp.com>
Date: Thu, 27 Apr 2017 18:51:45 +0000 (-0500)
Subject: MLK-14938-16 net: fec: do not access reserved register for i.MX8
X-Git-Tag: rel_imx_4.19.35_1.1.0~884
X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=8f06c9e83a8719992207ba6a3288871cf4850197;p=u-boot.git

MLK-14938-16 net: fec: do not access reserved register for i.MX8

The MIB RAM and FIFO receive start register does not exist on
i.MX8. Accessing these register will cause SERROR in kernel.

Signed-off-by: Ye Li <ye.li@nxp.com>
(cherry picked from commit 2a47ebbccb95e8482360813d6dff5288429f1248)
(cherry picked from commit fd99a9f057097a64034cd7b419fd983f487791e4)
---

diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index 84f010d805..1d064f79f7 100644
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -603,8 +603,8 @@ static int fec_init(struct eth_device *dev, bd_t *bd)
 	writel(0x00000000, &fec->eth->gaddr1);
 	writel(0x00000000, &fec->eth->gaddr2);
 
-	/* Do not access reserved register */
-	if (!is_mx6ul() && !is_mx6ull() && !is_imx8m()) {
+	/* Do not access reserved register for i.MX6UL/6ULL/i.MX8/i.MX8M */
+	if (!is_mx6ul() && !is_mx6ull() && !is_imx8() && !is_imx8m()) {
 		/* clear MIB RAM */
 		for (i = mib_ptr; i <= mib_ptr + 0xfc; i += 4)
 			writel(0, i);