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authorJohn Rigby <jcrigby@gmail.com>2010-01-25 23:12:57 -0700
committerTom Rix <Tom.Rix@windriver.com>2010-03-07 12:36:36 -0600
commit740d6ae5b982496fcea0666b2207cb34cc0e6015 (patch)
treebf4236cdc045593b1fb32679e45df497fa053410 /drivers/net/fec_mxc.c
parentcb17b92de03416cf4d5db5bd27ef4ae17f95e707 (diff)
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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>
Diffstat (limited to 'drivers/net/fec_mxc.c')
-rw-r--r--drivers/net/fec_mxc.c31
1 files changed, 30 insertions, 1 deletions
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 @@ static int fec_open(struct eth_device *edev)
*/
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 @@ static void fec_halt(struct eth_device *dev)
* 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");