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authorBaruch Siach <baruch@tkos.co.il>2011-02-14 02:05:33 +0000
committerDavid S. Miller <davem@davemloft.net>2011-02-14 17:38:30 -0800
commitd606ef3fe0c57504b8e534c58498f73a6abc049a (patch)
tree00aa6e80fedbe8cd866fe19db8b077afd32db068
parent68aa3fd551e9d54d98794852714dc1edbb21df77 (diff)
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phy/micrel: add ability to support 50MHz RMII clock on KZS8051RNL
Platform code can now set the MICREL_PHY_50MHZ_CLK bit of dev_flags in a fixup routine (registered with phy_register_fixup_for_uid()), to make the KZS8051RNL PHY work with 50MHz RMII reference clock. Cc: David J. Choi <david.choi@micrel.com> Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/phy/micrel.c24
-rw-r--r--include/linux/micrel_phy.h16
2 files changed, 32 insertions, 8 deletions
diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index 0fd1678bc5a9..590f902deb6b 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -19,13 +19,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/phy.h>
-
-#define PHY_ID_KSZ9021 0x00221611
-#define PHY_ID_KS8737 0x00221720
-#define PHY_ID_KS8041 0x00221510
-#define PHY_ID_KS8051 0x00221550
-/* both for ks8001 Rev. A/B, and for ks8721 Rev 3. */
-#define PHY_ID_KS8001 0x0022161A
+#include <linux/micrel_phy.h>
/* general Interrupt control/status reg in vendor specific block. */
#define MII_KSZPHY_INTCS 0x1B
@@ -46,6 +40,7 @@
#define KSZPHY_CTRL_INT_ACTIVE_HIGH (1 << 9)
#define KSZ9021_CTRL_INT_ACTIVE_HIGH (1 << 14)
#define KS8737_CTRL_INT_ACTIVE_HIGH (1 << 14)
+#define KSZ8051_RMII_50MHZ_CLK (1 << 7)
static int kszphy_ack_interrupt(struct phy_device *phydev)
{
@@ -106,6 +101,19 @@ static int kszphy_config_init(struct phy_device *phydev)
return 0;
}
+static int ks8051_config_init(struct phy_device *phydev)
+{
+ int regval;
+
+ if (phydev->dev_flags & MICREL_PHY_50MHZ_CLK) {
+ regval = phy_read(phydev, MII_KSZPHY_CTRL);
+ regval |= KSZ8051_RMII_50MHZ_CLK;
+ phy_write(phydev, MII_KSZPHY_CTRL, regval);
+ }
+
+ return 0;
+}
+
static struct phy_driver ks8737_driver = {
.phy_id = PHY_ID_KS8737,
.phy_id_mask = 0x00fffff0,
@@ -142,7 +150,7 @@ static struct phy_driver ks8051_driver = {
.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause
| SUPPORTED_Asym_Pause),
.flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
- .config_init = kszphy_config_init,
+ .config_init = ks8051_config_init,
.config_aneg = genphy_config_aneg,
.read_status = genphy_read_status,
.ack_interrupt = kszphy_ack_interrupt,
diff --git a/include/linux/micrel_phy.h b/include/linux/micrel_phy.h
new file mode 100644
index 000000000000..dd8da342a991
--- /dev/null
+++ b/include/linux/micrel_phy.h
@@ -0,0 +1,16 @@
+#ifndef _MICREL_PHY_H
+#define _MICREL_PHY_H
+
+#define MICREL_PHY_ID_MASK 0x00fffff0
+
+#define PHY_ID_KSZ9021 0x00221611
+#define PHY_ID_KS8737 0x00221720
+#define PHY_ID_KS8041 0x00221510
+#define PHY_ID_KS8051 0x00221550
+/* both for ks8001 Rev. A/B, and for ks8721 Rev 3. */
+#define PHY_ID_KS8001 0x0022161A
+
+/* struct phy_device dev_flags definitions */
+#define MICREL_PHY_50MHZ_CLK 0x00000001
+
+#endif /* _MICREL_PHY_H */