kernel: add fix for bgmac with B50212E B1 PHY

[openwrt/staging/dedeckeh.git] / target / linux / generic / backport-4.9 / 076-v4.15-0001-net-phy-broadcom-support-new-device-flag-for-setting.patch

diff --git a/target/linux/generic/backport-4.9/076-v4.15-0001-net-phy-broadcom-support-new-device-flag-for-setting.patch b/target/linux/generic/backport-4.9/076-v4.15-0001-net-phy-broadcom-support-new-device-flag-for-setting.patch
new file mode 100644 (file)
index 0000000..334c444
--- /dev/null
+++ b/target/linux/generic/backport-4.9/076-v4.15-0001-net-phy-broadcom-support-new-device-flag-for-setting.patch
@@ -0,0 +1,54 @@
+From 2355a6546a053b1c16ebefd6ce1f0cccc00e1da5 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Thu, 12 Oct 2017 10:21:25 +0200
+Subject: [PATCH] net: phy: broadcom: support new device flag for setting
+ master mode
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Some of Broadcom's PHYs run by default in slave mode with Automatic
+Slave/Master configuration disabled. It stops them from working properly
+with some devices.
+
+So far it has been verified for BCM54210E and BCM50212E which don't
+work well with Intel's I217-LM and I218-LM:
+http://ark.intel.com/products/60019/Intel-Ethernet-Connection-I217-LM
+http://ark.intel.com/products/71307/Intel-Ethernet-Connection-I218-LM
+I was told there is massive ping loss.
+
+This commit adds support for a new flag which can be set by an ethernet
+driver to fixup PHY setup.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/phy/broadcom.c | 6 ++++++
+ include/linux/brcmphy.h    | 1 +
+ 2 files changed, 7 insertions(+)
+
+--- a/drivers/net/phy/broadcom.c
++++ b/drivers/net/phy/broadcom.c
+@@ -43,6 +43,12 @@ static int bcm54210e_config_init(struct
+       val &= ~BCM54810_SHD_CLK_CTL_GTXCLK_EN;
+       bcm_phy_write_shadow(phydev, BCM54810_SHD_CLK_CTL, val);
+ 
++      if (phydev->dev_flags & PHY_BRCM_EN_MASTER_MODE) {
++              val = phy_read(phydev, MII_CTRL1000);
++              val |= CTL1000_AS_MASTER | CTL1000_ENABLE_MASTER;
++              phy_write(phydev, MII_CTRL1000, val);
++      }
++
+       return 0;
+ }
+ 
+--- a/include/linux/brcmphy.h
++++ b/include/linux/brcmphy.h
+@@ -59,6 +59,7 @@
+ #define PHY_BRCM_EXT_IBND_TX_ENABLE   0x00002000
+ #define PHY_BRCM_CLEAR_RGMII_MODE     0x00004000
+ #define PHY_BRCM_DIS_TXCRXC_NOENRGY   0x00008000
++#define PHY_BRCM_EN_MASTER_MODE               0x00010000
+ 
+ /* Broadcom BCM7xxx specific workarounds */
+ #define PHY_BRCM_7XXX_REV(x)          (((x) >> 8) & 0xff)