fec_mxc: add MX25 support
Use RMII for MX25
Add code to init gasket that enables RMII
Signed-off-by: John Rigby <jcrigby@gmail.com>
CC: Ben Warren <biggerbadderben@gmail.com>
diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index e027894..5af9cdb 100644
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -367,6 +367,34 @@
*/
writel(readl(&fec->eth->ecntrl) | FEC_ECNTRL_ETHER_EN,
&fec->eth->ecntrl);
+#ifdef CONFIG_MX25
+ udelay(100);
+ /*
+ * setup the MII gasket for RMII mode
+ */
+
+ /* disable the gasket */
+ writew(0, &fec->eth->miigsk_enr);
+
+ /* wait for the gasket to be disabled */
+ while (readw(&fec->eth->miigsk_enr) & MIIGSK_ENR_READY)
+ udelay(2);
+
+ /* configure gasket for RMII, 50 MHz, no loopback, and no echo */
+ writew(MIIGSK_CFGR_IF_MODE_RMII, &fec->eth->miigsk_cfgr);
+
+ /* re-enable the gasket */
+ writew(MIIGSK_ENR_EN, &fec->eth->miigsk_enr);
+
+ /* wait until MII gasket is ready */
+ int max_loops = 10;
+ while ((readw(&fec->eth->miigsk_enr) & MIIGSK_ENR_READY) == 0) {
+ if (--max_loops <= 0) {
+ printf("WAIT for MII Gasket ready timed out\n");
+ break;
+ }
+ }
+#endif
miiphy_wait_aneg(edev);
miiphy_speed(edev->name, CONFIG_FEC_MXC_PHYADDR);
@@ -513,7 +541,8 @@
* Disable the Ethernet Controller
* Note: this will also reset the BD index counter!
*/
- writel(readl(&fec->eth->ecntrl) & ~FEC_ECNTRL_ETHER_EN, &fec->eth->ecntrl);
+ writel(readl(&fec->eth->ecntrl) & ~FEC_ECNTRL_ETHER_EN,
+ &fec->eth->ecntrl);
fec->rbd_index = 0;
fec->tbd_index = 0;
debug("eth_halt: done\n");