net: fec: do not access reserved register for i.MX6ULL

The MIB RAM and FIFO receive start register does not exist on
i.MX6ULL. Accessing these register will cause enet not work well or
cause system report fault.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>

diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index 910879ba3e4c08cd8df43842958e00411c632164..ac7afb5b35e7c137c28ad01f921e824137c45825 100644 (file)
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -563,7 +563,7 @@ static int fec_init(struct eth_device *dev, bd_t *bd)
        writel(0x00000000, &fec->eth->gaddr2);
 
        /* Do not access reserved register for i.MX6UL */
-       if (!is_mx6ul()) {
+       if (!is_mx6ul() && !is_mx6ull()) {
                /* clear MIB RAM */
                for (i = mib_ptr; i <= mib_ptr + 0xfc; i += 4)
                        writel(0, i);