On i.MX28, the MDIO bus is shared between the
two RMII interfaces. However, in newer designs,
such as Vybrid, this is not the case. This patch
adds a quirk for the single MDIO case. This allows
to use both FEC interfaces working independently
on Vybird.
Signed-off-by: Bhuvanchandra DV <bhuvanchandra...@toradex.com>
---
drivers/net/ethernet/freescale/fec.h | 3 +++
drivers/net/ethernet/freescale/fec_main.c | 7 ++++---
2 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/freescale/fec.h
b/drivers/net/ethernet/freescale/fec.h
index 469691a..c9515bc 100644
--- a/drivers/net/ethernet/freescale/fec.h
+++ b/drivers/net/ethernet/freescale/fec.h
@@ -425,6 +425,9 @@ struct bufdesc_ex {
*/
#define FEC_QUIRK_BUG_CAPTURE (1 << 10)
+/* Controller has only one MDIO bus for interfacing external PHY's */
+#define FEC_QUIRK_SINGLE_MDIO (1 << 11)
+
struct fec_enet_priv_tx_q {
int index;
unsigned char *tx_bounce[TX_RING_SIZE];
diff --git a/drivers/net/ethernet/freescale/fec_main.c
b/drivers/net/ethernet/freescale/fec_main.c
index 5ebdf8d..22b7748 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -91,7 +91,8 @@ static struct platform_device_id fec_devtype[] = {
.driver_data = 0,
}, {
.name = "imx28-fec",
- .driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_SWAP_FRAME,
+ .driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_SWAP_FRAME |
+ FEC_QUIRK_SINGLE_MDIO,
}, {
.name = "imx6q-fec",
.driver_data = FEC_QUIRK_ENET_MAC | FEC_QUIRK_HAS_GBIT |
@@ -1952,7 +1953,7 @@ static int fec_enet_mii_init(struct platform_device *pdev)
* mdio interface in board design, and need to be configured by
* fec0 mii_bus.
*/
- if ((fep->quirks & FEC_QUIRK_ENET_MAC) && fep->dev_id > 0) {
+ if ((fep->quirks & FEC_QUIRK_SINGLE_MDIO) && fep->dev_id > 0) {
/* fec1 uses fec0 mii_bus */
if (mii_cnt && fec0_mii_bus) {
fep->mii_bus = fec0_mii_bus;
@@ -2015,7 +2016,7 @@ static int fec_enet_mii_init(struct platform_device *pdev)
mii_cnt++;
/* save fec0 mii_bus */
- if (fep->quirks & FEC_QUIRK_ENET_MAC)
+ if (fep->quirks & FEC_QUIRK_SINGLE_MDIO)
fec0_mii_bus = fep->mii_bus;
return 0;
--
1.7.9.5
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