kernel: backport support for BCM54810 PHY

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

1 files changed, 164 insertions, 12 deletions

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
index 6f6536bb1f..0aed5588fd 100644
--- 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
@@ -7,10 +7,101 @@ Signed-off-by: Rafał Miłecki <rafal@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;
+@@ -18,7 +18,7 @@
+ #include <linux/module.h>
+ #include <linux/phy.h>
+ #include <linux/brcmphy.h>
+-
++#include <linux/of.h>
+ 
+ #define BRCM_PHY_MODEL(phydev) \
+ 	((phydev)->drv->phy_id & (phydev)->drv->phy_id_mask)
+@@ -30,11 +30,49 @@ MODULE_DESCRIPTION("Broadcom PHY driver"
+ MODULE_AUTHOR("Maciej W. Rozycki");
+ MODULE_LICENSE("GPL");
+ 
++static int bcm54xx_auxctl_read(struct phy_device *phydev, u16 regnum)
++{
++	/* The register must be written to both the Shadow Register Select and
++	 * the Shadow Read Register Selector
++	 */
++	phy_write(phydev, MII_BCM54XX_AUX_CTL, regnum |
++		  regnum << MII_BCM54XX_AUXCTL_SHDWSEL_READ_SHIFT);
++	return phy_read(phydev, MII_BCM54XX_AUX_CTL);
++}
++
+ static int bcm54xx_auxctl_write(struct phy_device *phydev, u16 regnum, u16 val)
+ {
+ 	return phy_write(phydev, MII_BCM54XX_AUX_CTL, regnum | val);
  }
  
++static int bcm54810_config(struct phy_device *phydev)
++{
++	int rc, val;
++
++	val = bcm_phy_read_exp(phydev, BCM54810_EXP_BROADREACH_LRE_MISC_CTL);
++	val &= ~BCM54810_EXP_BROADREACH_LRE_MISC_CTL_EN;
++	rc = bcm_phy_write_exp(phydev, BCM54810_EXP_BROADREACH_LRE_MISC_CTL,
++			       val);
++	if (rc < 0)
++		return rc;
++
++	val = bcm54xx_auxctl_read(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC);
++	val &= ~MII_BCM54XX_AUXCTL_SHDWSEL_MISC_RGMII_SKEW_EN;
++	val |= MII_BCM54XX_AUXCTL_MISC_WREN;
++	rc = bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC,
++				  val);
++	if (rc < 0)
++		return rc;
++
++	val = bcm_phy_read_shadow(phydev, BCM54810_SHD_CLK_CTL);
++	val &= ~BCM54810_SHD_CLK_CTL_GTXCLK_EN;
++	rc = bcm_phy_write_shadow(phydev, BCM54810_SHD_CLK_CTL, val);
++	if (rc < 0)
++		return rc;
++
++	return 0;
++}
++
+ /* Needs SMDSP clock enabled via bcm54xx_phydsp_config() */
+ static int bcm50610_a0_workaround(struct phy_device *phydev)
+ {
+@@ -207,6 +245,12 @@ static int bcm54xx_config_init(struct ph
+ 	    (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
+ 		bcm54xx_adjust_rxrefclk(phydev);
+ 
++	if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM54810) {
++		err = bcm54810_config(phydev);
++		if (err)
++			return err;
++	}
++
+ 	bcm54xx_phydsp_config(phydev);
+ 
+ 	return 0;
+@@ -304,6 +348,7 @@ static int bcm5482_read_status(struct ph
+ 
+ static int bcm5481_config_aneg(struct phy_device *phydev)
+ {
++	struct device_node *np = phydev->dev.of_node;
+ 	int ret;
+ 
+ 	/* Aneg firsly. */
+@@ -334,6 +379,49 @@ static int bcm5481_config_aneg(struct ph
+ 		phy_write(phydev, 0x18, reg);
+ 	}
+ 
++	if (of_property_read_bool(np, "enet-phy-lane-swap")) {
++		/* Lane Swap - Undocumented register...magic! */
++		ret = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_SEL_ER + 0x9,
++					0x11B);
++		if (ret < 0)
++			return ret;
++	}
++
++	return ret;
++}
++
 +static int bcm54612e_config_aneg(struct phy_device *phydev)
 +{
 +	int ret;
@@ -43,13 +134,10 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
 +				     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
+ 	return ret;
+ }
+ 
+@@ -488,6 +576,19 @@ static struct phy_driver broadcom_driver
  	.config_intr	= bcm_phy_config_intr,
  	.driver		= { .owner = THIS_MODULE },
  }, {
@@ -69,7 +157,27 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  	.phy_id		= PHY_ID_BCM54616S,
  	.phy_id_mask	= 0xfffffff0,
  	.name		= "Broadcom BCM54616S",
-@@ -612,6 +660,7 @@ static struct mdio_device_id __maybe_unu
+@@ -527,6 +628,19 @@ static struct phy_driver broadcom_driver
+ 	.config_intr	= bcm_phy_config_intr,
+ 	.driver		= { .owner = THIS_MODULE },
+ }, {
++	.phy_id         = PHY_ID_BCM54810,
++	.phy_id_mask    = 0xfffffff0,
++	.name           = "Broadcom BCM54810",
++	.features       = PHY_GBIT_FEATURES |
++			  SUPPORTED_Pause | SUPPORTED_Asym_Pause,
++	.flags          = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
++	.config_init    = bcm54xx_config_init,
++	.config_aneg    = bcm5481_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_BCM5482,
+ 	.phy_id_mask	= 0xfffffff0,
+ 	.name		= "Broadcom BCM5482",
+@@ -612,9 +726,11 @@ static struct mdio_device_id __maybe_unu
  	{ PHY_ID_BCM5411, 0xfffffff0 },
  	{ PHY_ID_BCM5421, 0xfffffff0 },
  	{ PHY_ID_BCM5461, 0xfffffff0 },
@@ -77,9 +185,19 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  	{ PHY_ID_BCM54616S, 0xfffffff0 },
  	{ PHY_ID_BCM5464, 0xfffffff0 },
  	{ PHY_ID_BCM5481, 0xfffffff0 },
++	{ PHY_ID_BCM54810, 0xfffffff0 },
+ 	{ PHY_ID_BCM5482, 0xfffffff0 },
+ 	{ PHY_ID_BCM50610, 0xfffffff0 },
+ 	{ PHY_ID_BCM50610M, 0xfffffff0 },
 --- a/include/linux/brcmphy.h
 +++ b/include/linux/brcmphy.h
-@@ -18,6 +18,7 @@
+@@ -13,11 +13,13 @@
+ #define PHY_ID_BCM5241			0x0143bc30
+ #define PHY_ID_BCMAC131			0x0143bc70
+ #define PHY_ID_BCM5481			0x0143bca0
++#define PHY_ID_BCM54810			0x03625d00
+ #define PHY_ID_BCM5482			0x0143bcb0
+ #define PHY_ID_BCM5411			0x00206070
  #define PHY_ID_BCM5421			0x002060e0
  #define PHY_ID_BCM5464			0x002060b0
  #define PHY_ID_BCM5461			0x002060c0
@@ -87,7 +205,15 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  #define PHY_ID_BCM54616S		0x03625d10
  #define PHY_ID_BCM57780			0x03625d90
  
-@@ -102,11 +103,12 @@
+@@ -52,6 +54,7 @@
+ #define PHY_BRCM_EXT_IBND_TX_ENABLE	0x00002000
+ #define PHY_BRCM_CLEAR_RGMII_MODE	0x00004000
+ #define PHY_BRCM_DIS_TXCRXC_NOENRGY	0x00008000
++
+ /* Broadcom BCM7xxx specific workarounds */
+ #define PHY_BRCM_7XXX_REV(x)		(((x) >> 8) & 0xff)
+ #define PHY_BRCM_7XXX_PATCH(x)		((x) & 0xff)
+@@ -102,11 +105,14 @@
  #define MII_BCM54XX_AUXCTL_ACTL_SMDSP_ENA	0x0800
  
  #define MII_BCM54XX_AUXCTL_MISC_WREN	0x8000
@@ -95,9 +221,35 @@ Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  #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_READ_SHIFT	12
++#define MII_BCM54XX_AUXCTL_SHDWSEL_MISC_RGMII_SKEW_EN	(1 << 8)
  
 -#define MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL	0x0000
 +#define MII_BCM54XX_AUXCTL_SHDWSEL_MASK	0x0007
  
  /*
   * Broadcom LED source encodings.  These are used in BCM5461, BCM5481,
+@@ -186,6 +192,12 @@
+ #define BCM5482_SSD_SGMII_SLAVE_EN	0x0002	/* Slave mode enable */
+ #define BCM5482_SSD_SGMII_SLAVE_AD	0x0001	/* Slave auto-detection */
+ 
++/* BCM54810 Registers */
++#define BCM54810_EXP_BROADREACH_LRE_MISC_CTL	(MII_BCM54XX_EXP_SEL_ER + 0x90)
++#define BCM54810_EXP_BROADREACH_LRE_MISC_CTL_EN	(1 << 0)
++#define BCM54810_SHD_CLK_CTL			0x3
++#define BCM54810_SHD_CLK_CTL_GTXCLK_EN		(1 << 9)
++
+ 
+ /*****************************************************************************/
+ /* Fast Ethernet Transceiver definitions. */
+--- a/drivers/net/phy/Kconfig
++++ b/drivers/net/phy/Kconfig
+@@ -77,7 +77,7 @@ config BROADCOM_PHY
+ 	select BCM_NET_PHYLIB
+ 	---help---
+ 	  Currently supports the BCM5411, BCM5421, BCM5461, BCM54616S, BCM5464,
+-	  BCM5481 and BCM5482 PHYs.
++	  BCM5481, BCM54810 and BCM5482 PHYs.
+ 
+ config BCM_CYGNUS_PHY
+ 	tristate "Drivers for Broadcom Cygnus SoC internal PHY"