Commit d606ef3f authored by Baruch Siach's avatar Baruch Siach Committed by David S. Miller
Browse files

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: default avatarBaruch Siach <baruch@tkos.co.il>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 68aa3fd5

drivers/net/phy/micrel.c

+16 −8
Original line number Diff line number Diff line
@@ -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,

include/linux/micrel_phy.h

0 → 100644
+16 −0
Original line number Diff line number Diff line 
#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 */

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