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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)
This commit is contained in:
Ye Li 2017-04-27 13:51:45 -05:00
parent 8cae207d03
commit fd99a9f057
1 changed files with 2 additions and 2 deletions
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4
drivers/net/fec_mxc.c
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@ -564,8 +564,8 @@ 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);