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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>
hifive-unleashed-5.1
Baruch Siach 2011-02-14 02:05:33 +00:00 committed by David S. Miller
parent 68aa3fd551
commit d606ef3fe0
2 changed files with 32 additions and 8 deletions
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24
drivers/net/phy/micrel.c
View File

@ -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,

16
include/linux/micrel_phy.h 100644
View File

@ -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 */