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Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0193-net-lan78xx-Support-auto-downshift-to-100Mb-s.patch')
-rw-r--r--target/linux/bcm27xx/patches-4.19/950-0193-net-lan78xx-Support-auto-downshift-to-100Mb-s.patch83
1 files changed, 0 insertions, 83 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0193-net-lan78xx-Support-auto-downshift-to-100Mb-s.patch b/target/linux/bcm27xx/patches-4.19/950-0193-net-lan78xx-Support-auto-downshift-to-100Mb-s.patch
deleted file mode 100644
index c67acaa50d..0000000000
--- a/target/linux/bcm27xx/patches-4.19/950-0193-net-lan78xx-Support-auto-downshift-to-100Mb-s.patch
+++ /dev/null
@@ -1,83 +0,0 @@
-From a3c59bad71de2b3c09a25fd6ce5e3632c33c4bba Mon Sep 17 00:00:00 2001
-From: Phil Elwell <phil@raspberrypi.org>
-Date: Mon, 26 Nov 2018 19:46:58 +0000
-Subject: [PATCH] net: lan78xx: Support auto-downshift to 100Mb/s
-
-Ethernet cables with faulty or missing pairs (specifically pairs C and
-D) allow auto-negotiation to 1000Mbs, but do not support the successful
-establishment of a link. Add a DT property, "microchip,downshift-after",
-to configure the number of auto-negotiation failures after which it
-falls back to 100Mbs. Valid values are 2, 3, 4, 5 and 0, where 0 means
-never downshift.
-
-Signed-off-by: Phil Elwell <phil@raspberrypi.org>
----
- drivers/net/phy/microchip.c | 32 ++++++++++++++++++++++++++++++++
- include/linux/microchipphy.h | 8 ++++++++
- 2 files changed, 40 insertions(+)
-
---- a/drivers/net/phy/microchip.c
-+++ b/drivers/net/phy/microchip.c
-@@ -228,6 +228,7 @@ static int lan88xx_probe(struct phy_devi
- struct device *dev = &phydev->mdio.dev;
- struct lan88xx_priv *priv;
- u32 led_modes[4];
-+ u32 downshift_after = 0;
- int len;
-
- priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
-@@ -257,6 +258,37 @@ static int lan88xx_probe(struct phy_devi
- return -EINVAL;
- }
-
-+ if (!of_property_read_u32(dev->of_node,
-+ "microchip,downshift-after",
-+ &downshift_after)) {
-+ u32 mask = LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_MASK;
-+ u32 val = LAN78XX_PHY_CTRL3_AUTO_DOWNSHIFT;
-+
-+ switch (downshift_after) {
-+ case 2:
-+ val |= LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_2;
-+ break;
-+ case 3:
-+ val |= LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_3;
-+ break;
-+ case 4:
-+ val |= LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_4;
-+ break;
-+ case 5:
-+ val |= LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_5;
-+ break;
-+ case 0:
-+ /* Disable completely */
-+ mask = LAN78XX_PHY_CTRL3_AUTO_DOWNSHIFT;
-+ val = 0;
-+ break;
-+ default:
-+ return -EINVAL;
-+ }
-+ (void)phy_modify_paged(phydev, 1, LAN78XX_PHY_CTRL3,
-+ mask, val);
-+ }
-+
- /* these values can be used to identify internal PHY */
- priv->chip_id = phy_read_mmd(phydev, 3, LAN88XX_MMD3_CHIP_ID);
- priv->chip_rev = phy_read_mmd(phydev, 3, LAN88XX_MMD3_CHIP_REV);
---- a/include/linux/microchipphy.h
-+++ b/include/linux/microchipphy.h
-@@ -73,6 +73,14 @@
- /* Registers specific to the LAN7800/LAN7850 embedded phy */
- #define LAN78XX_PHY_LED_MODE_SELECT (0x1D)
-
-+#define LAN78XX_PHY_CTRL3 (0x14)
-+#define LAN78XX_PHY_CTRL3_AUTO_DOWNSHIFT (0x0010)
-+#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_MASK (0x000c)
-+#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_2 (0x0000)
-+#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_3 (0x0004)
-+#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_4 (0x0008)
-+#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_5 (0x000c)
-+
- /* DSP registers */
- #define PHY_ARDENNES_MMD_DEV_3_PHY_CFG (0x806A)
- #define PHY_ARDENNES_MMD_DEV_3_PHY_CFG_ZD_DLY_EN_ (0x2000)