From: Lothar Waßmann <LW@KARO-electronics.de>
Date: Fri, 9 Oct 2015 09:42:36 +0000 (+0200)
Subject: net: fec_mxc: don't write to reserved register on i.MX6UL
X-Git-Tag: KARO-TX6UL-2015-10-23~31
X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=commitdiff_plain;h=f69782f986a17d36b5039bff1fe540894e1731c9

net: fec_mxc: don't write to reserved register on i.MX6UL
---

diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index 61f2db834c..ee6822af32 100644
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -559,9 +559,11 @@ 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 for i.MX6UL */
+#ifndef CONFIG_SOC_MX6UL
 	/* FIFO receive start register */
 	writel(0x520, &fec->eth->r_fstart);
-
+#endif
 	/* size and address of each buffer */
 	writel(FEC_MAX_PKT_SIZE, &fec->eth->emrbr);
 	writel((uint32_t)fec->tbd_base, &fec->eth->etdsr);