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authorJohn Crispin <john@openwrt.org>2012-12-21 20:04:04 +0000
committerJohn Crispin <john@openwrt.org>2012-12-21 20:04:04 +0000
commitae0b9ff1cef0fd4b724817ea84bd6cea1fdbc34b (patch)
tree4ca0367d2905ed5b84b5b570ce9f35073b9257e0 /target/linux/lantiq/patches-3.7
parent9818a1f00ba94f543700e6c40709b2338301a7e1 (diff)
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Setting the MDC clock to 2.5MHz and changing the mii mode to rgmii seems to fix the communication issues with the ar8316 switch. (ticket #11143)
Tested only on the wbmr-hp-g300h, could affect/break other devices. Signed-off-by: Sebastian Mayr <sebastian.mayr@student.uibk.ac.at> SVN-Revision: 34837
Diffstat (limited to 'target/linux/lantiq/patches-3.7')
-rw-r--r--target/linux/lantiq/patches-3.7/0126-lantiq_etop-Change-MDIO-clock.patch47
-rw-r--r--target/linux/lantiq/patches-3.7/0127-lantiq_etop-Fix-supported-modes-flag.patch51
2 files changed, 98 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-3.7/0126-lantiq_etop-Change-MDIO-clock.patch b/target/linux/lantiq/patches-3.7/0126-lantiq_etop-Change-MDIO-clock.patch
new file mode 100644
index 0000000..79fdd2b
--- /dev/null
+++ b/target/linux/lantiq/patches-3.7/0126-lantiq_etop-Change-MDIO-clock.patch
@@ -0,0 +1,47 @@
+From 2f9f0ec1ff013934a86a7303c9194f6dc05620c3 Mon Sep 17 00:00:00 2001
+From: Sebastian Mayr <sebastian.mayr@student.uibk.ac.at>
+Date: Thu, 20 Dec 2012 18:34:45 +0100
+Subject: [PATCH 1/2] lantiq_etop: Change MDIO clock
+
+This patch sets the MDC clock to 2.5MHz which fixes the MDIO communication
+with the ar8316 switch.
+---
+ drivers/net/ethernet/lantiq_etop.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/drivers/net/ethernet/lantiq_etop.c b/drivers/net/ethernet/lantiq_etop.c
+index e695f71..fc963f6 100644
+--- a/drivers/net/ethernet/lantiq_etop.c
++++ b/drivers/net/ethernet/lantiq_etop.c
+@@ -83,6 +83,7 @@
+ #define LTQ_GBIT_PMAC_HD_CTL 0x8c
+ #define LTQ_GBIT_P0_CTL 0x4
+ #define LTQ_GBIT_PMAC_RX_IPG 0xa8
++#define LTQ_GBIT_RGMII_CTL 0x78
+
+ #define PMAC_HD_CTL_AS (1 << 19)
+ #define PMAC_HD_CTL_RXSH (1 << 22)
+@@ -92,6 +93,10 @@
+ /* Disable MDIO auto polling (0=disable, 1=enable) */
+ #define PX_CTL_DMDIO 0x00400000
+
++/* MDC clock divider, clock = 25MHz/((MDC_CLOCK + 1) * 2) */
++#define MDC_CLOCK_MASK 0xff000000
++#define MDC_CLOCK_OFFSET 24
++
+ /* register information for the gbit's MDIO bus */
+ #define MDIO_XR9_REQUEST 0x00008000
+ #define MDIO_XR9_READ 0x00000800
+@@ -329,6 +334,9 @@ ltq_etop_gbit_init(struct net_device *dev)
+ /* Due to traffic halt when burst length 8,
+ replace default IPG value with 0x3B */
+ ltq_gbit_w32(0x3B, LTQ_GBIT_PMAC_RX_IPG);
++ /* set mdc clock to 2.5 MHz */
++ ltq_gbit_w32_mask(MDC_CLOCK_MASK, 4 << MDC_CLOCK_OFFSET,
++ LTQ_GBIT_RGMII_CTL);
+ }
+
+ static int
+--
+1.7.11.7
+
diff --git a/target/linux/lantiq/patches-3.7/0127-lantiq_etop-Fix-supported-modes-flag.patch b/target/linux/lantiq/patches-3.7/0127-lantiq_etop-Fix-supported-modes-flag.patch
new file mode 100644
index 0000000..73394fc
--- /dev/null
+++ b/target/linux/lantiq/patches-3.7/0127-lantiq_etop-Fix-supported-modes-flag.patch
@@ -0,0 +1,51 @@
+From 4de6a250878c9ce5605838b65acbddf338a7254a Mon Sep 17 00:00:00 2001
+From: Sebastian Mayr <sebastian.mayr@student.uibk.ac.at>
+Date: Thu, 20 Dec 2012 18:52:10 +0100
+Subject: [PATCH 2/2] lantiq_etop: Fix supported modes flag
+
+---
+ drivers/net/ethernet/lantiq_etop.c | 19 ++++++++++---------
+ 1 file changed, 10 insertions(+), 9 deletions(-)
+
+diff --git a/drivers/net/ethernet/lantiq_etop.c b/drivers/net/ethernet/lantiq_etop.c
+index fc963f6..b50b91e 100644
+--- a/drivers/net/ethernet/lantiq_etop.c
++++ b/drivers/net/ethernet/lantiq_etop.c
+@@ -551,6 +551,13 @@ ltq_etop_mdio_probe(struct net_device *dev)
+ {
+ struct ltq_etop_priv *priv = netdev_priv(dev);
+ struct phy_device *phydev = NULL;
++ u32 phy_supported = (SUPPORTED_10baseT_Half
++ | SUPPORTED_10baseT_Full
++ | SUPPORTED_100baseT_Half
++ | SUPPORTED_100baseT_Full
++ | SUPPORTED_Autoneg
++ | SUPPORTED_MII
++ | SUPPORTED_TP);
+
+ if (of_machine_is_compatible("lantiq,ase"))
+ phydev = priv->mii_bus->phy_map[8];
+@@ -570,17 +577,11 @@ ltq_etop_mdio_probe(struct net_device *dev)
+ return PTR_ERR(phydev);
+ }
+
+- phydev->supported &= (SUPPORTED_10baseT_Half
+- | SUPPORTED_10baseT_Full
+- | SUPPORTED_100baseT_Half
+- | SUPPORTED_100baseT_Full
+- | SUPPORTED_Autoneg
+- | SUPPORTED_MII
+- | SUPPORTED_TP);
+ if (of_machine_is_compatible("lantiq,ar9"))
+- phydev->supported &= SUPPORTED_1000baseT_Half
+- | SUPPORTED_1000baseT_Full;
++ phy_supported |= SUPPORTED_1000baseT_Half
++ | SUPPORTED_1000baseT_Full;
+
++ phydev->supported &= phy_supported;
+ phydev->advertising = phydev->supported;
+ priv->phydev = phydev;
+ pr_info("%s: attached PHY [%s] (phy_addr=%s, irq=%d)\n",
+--
+1.7.11.7
+