[source] kernel: backport support for BCM54612E PHY

[LEDE Commits]

rmilecki pushed a commit to source.git, branch lede-17.01:
https://git.lede-project.org/2ee7bc0a5e14981a7f753bce1d5ea61e2c223799

commit 2ee7bc0a5e14981a7f753bce1d5ea61e2c223799
Author: Rafał Miłecki <rafal at milecki.pl>
AuthorDate: Sat Jan 28 17:33:56 2017 +0100

    kernel: backport support for BCM54612E PHY
    
    Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
---
 ...rry-pick-Broadcom-drivers-updates-from-v4.patch | 103 +++++++++++++++++++++
 1 file changed, 103 insertions(+)

diff --git a/target/linux/generic/patches-4.4/078-0003-net-phy-cherry-pick-Broadcom-drivers-updates-from-v4.patch b/target/linux/generic/patches-4.4/078-0003-net-phy-cherry-pick-Broadcom-drivers-updates-from-v4.patch
new file mode 100644
index 0000000..6f6536b
--- /dev/null
+++ b/target/linux/generic/patches-4.4/078-0003-net-phy-cherry-pick-Broadcom-drivers-updates-from-v4.patch
@@ -0,0 +1,103 @@
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal at milecki.pl>
+Subject: [PATCH 1/2] net: phy: cherry-pick Broadcom drivers updates from
+ v4.10-rc1
+
+Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
+---
+
+--- a/drivers/net/phy/broadcom.c
++++ b/drivers/net/phy/broadcom.c
+@@ -337,6 +337,41 @@ static int bcm5481_config_aneg(struct ph
+ 	return ret;
+ }
+ 
++static int bcm54612e_config_aneg(struct phy_device *phydev)
++{
++	int ret;
++
++	/* First, auto-negotiate. */
++	ret = genphy_config_aneg(phydev);
++
++	/* Clear TX internal delay unless requested. */
++	if ((phydev->interface != PHY_INTERFACE_MODE_RGMII_ID) &&
++	    (phydev->interface != PHY_INTERFACE_MODE_RGMII_TXID)) {
++		/* Disable TXD to GTXCLK clock delay (default set) */
++		/* Bit 9 is the only field in shadow register 00011 */
++		bcm_phy_write_shadow(phydev, 0x03, 0);
++	}
++
++	/* Clear RX internal delay unless requested. */
++	if ((phydev->interface != PHY_INTERFACE_MODE_RGMII_ID) &&
++	    (phydev->interface != PHY_INTERFACE_MODE_RGMII_RXID)) {
++		u16 reg;
++
++		/* Errata: reads require filling in the write selector field */
++		bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC,
++				     MII_BCM54XX_AUXCTL_MISC_RDSEL_MISC);
++		reg = phy_read(phydev, MII_BCM54XX_AUX_CTL);
++		/* Disable RXD to RXC delay (default set) */
++		reg &= ~MII_BCM54XX_AUXCTL_MISC_RXD_RXC_SKEW;
++		/* Clear shadow selector field */
++		reg &= ~MII_BCM54XX_AUXCTL_SHDWSEL_MASK;
++		bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC,
++				     MII_BCM54XX_AUXCTL_MISC_WREN | reg);
++	}
++
++	return ret;
++}
++
+ static int brcm_phy_setbits(struct phy_device *phydev, int reg, int set)
+ {
+ 	int val;
+@@ -488,6 +523,19 @@ static struct phy_driver broadcom_driver
+ 	.config_intr	= bcm_phy_config_intr,
+ 	.driver		= { .owner = THIS_MODULE },
+ }, {
++	.phy_id		= PHY_ID_BCM54612E,
++	.phy_id_mask	= 0xfffffff0,
++	.name		= "Broadcom BCM54612E",
++	.features	= PHY_GBIT_FEATURES |
++			  SUPPORTED_Pause | SUPPORTED_Asym_Pause,
++	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
++	.config_init	= bcm54xx_config_init,
++	.config_aneg	= bcm54612e_config_aneg,
++	.read_status	= genphy_read_status,
++	.ack_interrupt	= bcm_phy_ack_intr,
++	.config_intr	= bcm_phy_config_intr,
++	.driver		= { .owner = THIS_MODULE },
++}, {
+ 	.phy_id		= PHY_ID_BCM54616S,
+ 	.phy_id_mask	= 0xfffffff0,
+ 	.name		= "Broadcom BCM54616S",
+@@ -612,6 +660,7 @@ static struct mdio_device_id __maybe_unu
+ 	{ PHY_ID_BCM5411, 0xfffffff0 },
+ 	{ PHY_ID_BCM5421, 0xfffffff0 },
+ 	{ PHY_ID_BCM5461, 0xfffffff0 },
++	{ PHY_ID_BCM54612E, 0xfffffff0 },
+ 	{ PHY_ID_BCM54616S, 0xfffffff0 },
+ 	{ PHY_ID_BCM5464, 0xfffffff0 },
+ 	{ PHY_ID_BCM5481, 0xfffffff0 },
+--- a/include/linux/brcmphy.h
++++ b/include/linux/brcmphy.h
+@@ -18,6 +18,7 @@
+ #define PHY_ID_BCM5421			0x002060e0
+ #define PHY_ID_BCM5464			0x002060b0
+ #define PHY_ID_BCM5461			0x002060c0
++#define PHY_ID_BCM54612E		0x03625e60
+ #define PHY_ID_BCM54616S		0x03625d10
+ #define PHY_ID_BCM57780			0x03625d90
+ 
+@@ -102,11 +103,12 @@
+ #define MII_BCM54XX_AUXCTL_ACTL_SMDSP_ENA	0x0800
+ 
+ #define MII_BCM54XX_AUXCTL_MISC_WREN	0x8000
++#define MII_BCM54XX_AUXCTL_MISC_RXD_RXC_SKEW	0x0100
+ #define MII_BCM54XX_AUXCTL_MISC_FORCE_AMDIX	0x0200
+ #define MII_BCM54XX_AUXCTL_MISC_RDSEL_MISC	0x7000
+ #define MII_BCM54XX_AUXCTL_SHDWSEL_MISC	0x0007
+ 
+-#define MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL	0x0000
++#define MII_BCM54XX_AUXCTL_SHDWSEL_MASK	0x0007
+ 
+ /*
+  * Broadcom LED source encodings.  These are used in BCM5461, BCM5481,