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From 20c64dabb67b210c1148820e626fbe0b1dc994f6 Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Tue, 31 Jul 2018 04:50:38 +0200
Subject: [PATCH] kernel: re-add patch for AT8032 Ethernet PHY
The patch was wrongly removed by a kernel version bump to 4.9.106 in
the believe that it was merged upstream thow it wasn't. This lead to
unrecoverable link losses on devices which use those PHYs such as
many ubnt single-port CPEs.
Fixes: 6f8eb1b50f ("kernel: bump 4.9 to 4.9.106 for 18.06")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit a497e47762)
---
.../902-at803x-add-reset-gpio-pdata.patch | 8 +--
...et-phy-at803x-add-support-for-AT8032.patch | 70 +++++++++++++++++++
...-at803x-allow-to-configure-via-pdata.patch | 12 ++--
...net-phy-at803x-fix-at8033-sgmii-mode.patch | 2 +-
4 files changed, 81 insertions(+), 11 deletions(-)
create mode 100644 target/linux/generic/pending-4.9/180-net-phy-at803x-add-support-for-AT8032.patch
Index: openwrt/target/linux/ar71xx/patches-4.9/902-at803x-add-reset-gpio-pdata.patch
===================================================================
--- openwrt.orig/target/linux/ar71xx/patches-4.9/902-at803x-add-reset-gpio-pdata.patch
+++ openwrt/target/linux/ar71xx/patches-4.9/902-at803x-add-reset-gpio-pdata.patch
@@ -16,7 +16,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.na
#endif /* _PHY_AT803X_PDATA_H */
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
-@@ -263,6 +263,7 @@ static int at803x_resume(struct phy_devi
+@@ -264,6 +264,7 @@ static int at803x_resume(struct phy_devi
static int at803x_probe(struct phy_device *phydev)
{
@@ -24,8 +24,8 @@ Signed-off-by: Felix Fietkau <nbd@nbd.na
struct device *dev = &phydev->mdio.dev;
struct at803x_priv *priv;
struct gpio_desc *gpiod_reset;
-@@ -274,6 +275,12 @@ static int at803x_probe(struct phy_devic
- if (phydev->drv->phy_id != ATH8030_PHY_ID)
+@@ -276,6 +277,12 @@ static int at803x_probe(struct phy_devic
+ phydev->drv->phy_id != ATH8032_PHY_ID)
goto does_not_require_reset_workaround;
+ pdata = dev_get_platdata(dev);
@@ -37,7 +37,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.na
gpiod_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(gpiod_reset))
return PTR_ERR(gpiod_reset);
-@@ -405,15 +412,23 @@ static void at803x_link_change_notify(st
+@@ -407,15 +414,23 @@ static void at803x_link_change_notify(st
* cannot recover from by software.
*/
if (phydev->state == PHY_NOLINK) {
Index: openwrt/target/linux/generic/pending-4.9/180-net-phy-at803x-add-support-for-AT8032.patch
===================================================================
--- /dev/null
+++ openwrt/target/linux/generic/pending-4.9/180-net-phy-at803x-add-support-for-AT8032.patch
@@ -0,0 +1,70 @@
+From: Felix Fietkau <nbd@nbd.name>
+Subject: net: phy: at803x: add support for AT8032
+
+Like AT8030, this PHY needs the GPIO reset workaround
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/phy/at803x.c
++++ b/drivers/net/phy/at803x.c
+@@ -62,6 +62,7 @@
+
+ #define ATH8030_PHY_ID 0x004dd076
+ #define ATH8031_PHY_ID 0x004dd074
++#define ATH8032_PHY_ID 0x004dd023
+ #define ATH8035_PHY_ID 0x004dd072
+
+ MODULE_DESCRIPTION("Atheros 803x PHY driver");
+@@ -259,7 +260,8 @@ static int at803x_probe(struct phy_devic
+ if (!priv)
+ return -ENOMEM;
+
+- if (phydev->drv->phy_id != ATH8030_PHY_ID)
++ if (phydev->drv->phy_id != ATH8030_PHY_ID &&
++ phydev->drv->phy_id != ATH8032_PHY_ID)
+ goto does_not_require_reset_workaround;
+
+ gpiod_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
+@@ -335,7 +337,7 @@ static void at803x_link_change_notify(st
+ struct at803x_priv *priv = phydev->priv;
+
+ /*
+- * Conduct a hardware reset for AT8030 every time a link loss is
++ * Conduct a hardware reset for AT8030/2 every time a link loss is
+ * signalled. This is necessary to circumvent a hardware bug that
+ * occurs when the cable is unplugged while TX packets are pending
+ * in the FIFO. In such cases, the FIFO enters an error mode it
+@@ -447,6 +449,24 @@ static struct phy_driver at803x_driver[]
+ .aneg_done = at803x_aneg_done,
+ .ack_interrupt = &at803x_ack_interrupt,
+ .config_intr = &at803x_config_intr,
++}, {
++ /* ATHEROS 8032 */
++ .phy_id = ATH8032_PHY_ID,
++ .name = "Atheros 8032 ethernet",
++ .phy_id_mask = 0xffffffef,
++ .probe = at803x_probe,
++ .config_init = at803x_config_init,
++ .link_change_notify = at803x_link_change_notify,
++ .set_wol = at803x_set_wol,
++ .get_wol = at803x_get_wol,
++ .suspend = at803x_suspend,
++ .resume = at803x_resume,
++ .features = PHY_BASIC_FEATURES,
++ .flags = PHY_HAS_INTERRUPT,
++ .config_aneg = genphy_config_aneg,
++ .read_status = genphy_read_status,
++ .ack_interrupt = at803x_ack_interrupt,
++ .config_intr = at803x_config_intr,
+ } };
+
+ module_phy_driver(at803x_driver);
+@@ -454,6 +474,7 @@ module_phy_driver(at803x_driver);
+ static struct mdio_device_id __maybe_unused atheros_tbl[] = {
+ { ATH8030_PHY_ID, 0xffffffef },
+ { ATH8031_PHY_ID, 0xffffffef },
++ { ATH8032_PHY_ID, 0xffffffef },
+ { ATH8035_PHY_ID, 0xffffffef },
+ { }
+ };
Index: openwrt/target/linux/generic/pending-4.9/734-net-phy-at803x-allow-to-configure-via-pdata.patch
===================================================================
--- openwrt.orig/target/linux/generic/pending-4.9/734-net-phy-at803x-allow-to-configure-via-pdata.patch
+++ openwrt/target/linux/generic/pending-4.9/734-net-phy-at803x-allow-to-configure-via-pdata.patch
@@ -40,7 +40,7 @@ Signed-off-by: Gabor Juhos <juhosg@openw
#define AT803X_DEBUG_ADDR 0x1D
#define AT803X_DEBUG_DATA 0x1E
-@@ -71,6 +78,7 @@ MODULE_LICENSE("GPL");
+@@ -72,6 +79,7 @@ MODULE_LICENSE("GPL");
struct at803x_priv {
bool phy_reset:1;
struct gpio_desc *gpiod_reset;
@@ -48,7 +48,7 @@ Signed-off-by: Gabor Juhos <juhosg@openw
};
struct at803x_context {
-@@ -274,8 +282,16 @@ does_not_require_reset_workaround:
+@@ -276,8 +284,16 @@ does_not_require_reset_workaround:
return 0;
}
@@ -65,7 +65,7 @@ Signed-off-by: Gabor Juhos <juhosg@openw
int ret;
ret = genphy_config_init(phydev);
-@@ -296,6 +312,26 @@ static int at803x_config_init(struct phy
+@@ -298,6 +314,26 @@ static int at803x_config_init(struct phy
return ret;
}
@@ -92,7 +92,7 @@ Signed-off-by: Gabor Juhos <juhosg@openw
return 0;
}
-@@ -333,6 +369,8 @@ static int at803x_config_intr(struct phy
+@@ -335,6 +371,8 @@ static int at803x_config_intr(struct phy
static void at803x_link_change_notify(struct phy_device *phydev)
{
struct at803x_priv *priv = phydev->priv;
@@ -100,8 +100,8 @@ Signed-off-by: Gabor Juhos <juhosg@openw
+ pdata = dev_get_platdata(&phydev->mdio.dev);
/*
- * Conduct a hardware reset for AT8030 every time a link loss is
-@@ -361,6 +399,24 @@ static void at803x_link_change_notify(st
+ * Conduct a hardware reset for AT8030/2 every time a link loss is
+@@ -363,6 +401,24 @@ static void at803x_link_change_notify(st
} else {
priv->phy_reset = false;
}
Index: openwrt/target/linux/generic/pending-4.9/735-net-phy-at803x-fix-at8033-sgmii-mode.patch
===================================================================
--- openwrt.orig/target/linux/generic/pending-4.9/735-net-phy-at803x-fix-at8033-sgmii-mode.patch
+++ openwrt/target/linux/generic/pending-4.9/735-net-phy-at803x-fix-at8033-sgmii-mode.patch
@@ -24,7 +24,7 @@ Signed-off-by: Roman Yeryomin <roman@adv
#define AT803X_MODE_CFG_MASK 0x0F
#define AT803X_MODE_CFG_SGMII 0x01
-@@ -293,6 +297,27 @@ static int at803x_config_init(struct phy
+@@ -295,6 +299,27 @@ static int at803x_config_init(struct phy
{
struct at803x_platform_data *pdata;
int ret;
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