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openwrt/target/linux/generic/patches-4.4/078-0003-net-phy-cherry-pick-Broadcom-drivers-updates-from-v4.patch
Rafał Miłecki 8ad1b09c6d kernel: add fix for bgmac with B50212E B1 PHY 
This PHY requires some extra programming to work reliably with all
devices. Backport upstream fix for it.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2017-10-13 14:14:45 +02:00

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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Subject: [PATCH] net: phy: cherry-pick Broadcom drivers updates from v4.10
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---
--- a/drivers/net/phy/broadcom.c
+++ b/drivers/net/phy/broadcom.c
@@ -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)
@@ -30,9 +30,32 @@ MODULE_DESCRIPTION("Broadcom PHY driver"
MODULE_AUTHOR("Maciej W. Rozycki");
MODULE_LICENSE("GPL");
-static int bcm54xx_auxctl_write(struct phy_device *phydev, u16 regnum, u16 val)
+static int bcm54810_config(struct phy_device *phydev)
{
- return phy_write(phydev, MII_BCM54XX_AUX_CTL, regnum | val);
+ 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() */
@@ -207,6 +230,12 @@ 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 +333,7 @@ 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 +364,49 @@ 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;
+
+ /* 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;
}
@@ -488,6 +561,19 @@ 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",
@@ -527,6 +613,19 @@ 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 +711,11 @@ 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 },
+ { 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
@@ -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
+#define PHY_ID_BCM54612E 0x03625e60
#define PHY_ID_BCM54616S 0x03625d10
#define PHY_ID_BCM57780 0x03625d90
@@ -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
+#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_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"
--- a/drivers/net/phy/bcm-phy-lib.c
+++ b/drivers/net/phy/bcm-phy-lib.c
@@ -50,6 +50,23 @@ int bcm_phy_read_exp(struct phy_device *
}
EXPORT_SYMBOL_GPL(bcm_phy_read_exp);
+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);
+}
+EXPORT_SYMBOL_GPL(bcm54xx_auxctl_read);
+
+int bcm54xx_auxctl_write(struct phy_device *phydev, u16 regnum, u16 val)
+{
+ return phy_write(phydev, MII_BCM54XX_AUX_CTL, regnum | val);
+}
+EXPORT_SYMBOL(bcm54xx_auxctl_write);
+
int bcm_phy_write_misc(struct phy_device *phydev,
u16 reg, u16 chl, u16 val)
{
--- a/drivers/net/phy/bcm-phy-lib.h
+++ b/drivers/net/phy/bcm-phy-lib.h
@@ -19,6 +19,9 @@
int bcm_phy_write_exp(struct phy_device *phydev, u16 reg, u16 val);
int bcm_phy_read_exp(struct phy_device *phydev, u16 reg);
+int bcm54xx_auxctl_write(struct phy_device *phydev, u16 regnum, u16 val);
+int bcm54xx_auxctl_read(struct phy_device *phydev, u16 regnum);
+
int bcm_phy_write_misc(struct phy_device *phydev,
u16 reg, u16 chl, u16 value);
int bcm_phy_read_misc(struct phy_device *phydev,
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