Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 52fae083 authored by Matt Carlson's avatar Matt Carlson Committed by David S. Miller
Browse files

tg3 / broadcom: Optionally disable TXC if no link 



This patch adds code to disable the TXC and RXC reference clocks if link
is not available.

Signed-off-by: default avatarMatt Carlson <mcarlson@broadcom.com>
Reviewed-by: default avatarMichael Chan <mchan@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c704dc23

drivers/net/phy/broadcom.c

+5 −0
Original line number Diff line number Diff line
@@ -108,6 +108,7 @@ 
#define BCM54XX_SHD_SCR3		0x05

#define  BCM54XX_SHD_SCR3_DEF_CLK125	0x0001

#define  BCM54XX_SHD_SCR3_DLLAPD_DIS	0x0002

#define  BCM54XX_SHD_SCR3_TRDDAPD	0x0004



/* 01010: Auto Power-Down */

#define BCM54XX_SHD_APD			0x0a
@@ -362,6 +363,9 @@ static void bcm54xx_adjust_rxrefclk(struct phy_device *phydev) 
	else

		val |= BCM54XX_SHD_SCR3_DLLAPD_DIS;



	if (phydev->dev_flags & PHY_BRCM_DIS_TXCRXC_NOENRGY)

		val |= BCM54XX_SHD_SCR3_TRDDAPD;



	if (orig != val)

		bcm54xx_shadow_write(phydev, BCM54XX_SHD_SCR3, val);
@@ -409,6 +413,7 @@ static int bcm54xx_config_init(struct phy_device *phydev) 
		bcm54xx_shadow_write(phydev, BCM54XX_SHD_RGMII_MODE, 0);



	if ((phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED) ||

	    (phydev->dev_flags & PHY_BRCM_DIS_TXCRXC_NOENRGY) ||

	    (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))

		bcm54xx_adjust_rxrefclk(phydev);

drivers/net/tg3.c

+1 −0
Original line number Diff line number Diff line
@@ -1103,6 +1103,7 @@ static int tg3_mdio_init(struct tg3 *tp) 
	case TG3_PHY_ID_BCM50610M:

		phydev->dev_flags |= PHY_BRCM_CLEAR_RGMII_MODE |

				     PHY_BRCM_RX_REFCLK_UNUSED |

				     PHY_BRCM_DIS_TXCRXC_NOENRGY |

				     PHY_BRCM_AUTO_PWRDWN_ENABLE;

		if (tp->tg3_flags3 & TG3_FLG3_RGMII_STD_IBND_DISABLE)

			phydev->dev_flags |= PHY_BRCM_STD_IBND_DISABLE;

include/linux/brcmphy.h

+1 −0
Original line number Diff line number Diff line
@@ -9,4 +9,5 @@ 
#define PHY_BRCM_EXT_IBND_RX_ENABLE	0x00001000

#define PHY_BRCM_EXT_IBND_TX_ENABLE	0x00002000

#define PHY_BRCM_CLEAR_RGMII_MODE	0x00004000

#define PHY_BRCM_DIS_TXCRXC_NOENRGY	0x00008000

#define PHY_BCM_FLAGS_VALID		0x80000000