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authorGabor Juhos <juhosg@openwrt.org>2013-12-17 22:14:11 +0000
committerGabor Juhos <juhosg@openwrt.org>2013-12-17 22:14:11 +0000
commitcc0f9379096ecd0f963b7ea02c8131f5040d0124 (patch)
tree332f38fa3f0826a19417903a7f0437ca2dfc0264 /target/linux/ar71xx
parenta6622ee6bfec7eb173d5b3bf7cb009b98551238c (diff)
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ar71xx: implement switch fix for WD My Net N750
The bootloader on the WD My Net N750 disables the ports on it's internal AR8327N switch by powering them down. The stock firmware then brings the ports back up again by starting the auto negotiation process on each port. This fix implements just that. Signed-off-by: Felix Kaechele <heffer@fedoraproject.org> Patchwork: http://patchwork.openwrt.org/patch/4615/ Signed-off-by: Gabor Juhos <juhosg@openwrt.org> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39128 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ar71xx')
-rw-r--r--target/linux/ar71xx/files/arch/mips/ath79/mach-mynet-n750.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-mynet-n750.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-mynet-n750.c
index 60f68cd6a1..29201feb0b 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-mynet-n750.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-mynet-n750.c
@@ -12,6 +12,7 @@
#include <linux/pci.h>
#include <linux/phy.h>
#include <linux/gpio.h>
+#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/ath9k_platform.h>
#include <linux/ar8216_platform.h>
@@ -144,6 +145,23 @@ static void mynet_n750_get_mac(const char *name, char *mac)
pr_err("no MAC address found for %s\n", name);
}
+/*
+ * The bootloader on this board powers down all PHYs on the switch
+ * before booting the kernel. We bring all PHYs back up so that they are
+ * discoverable by the mdio bus scan and the switch is detected
+ * correctly.
+ */
+static void mynet_n750_mdio_fixup(struct mii_bus *bus)
+{
+ int i;
+
+ for (i = 0; i < 5; i++)
+ bus->write(bus, i, MII_BMCR,
+ (BMCR_RESET | BMCR_ANENABLE | BMCR_SPEED1000));
+
+ mdelay(1000);
+}
+
static void __init mynet_n750_setup(void)
{
u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
@@ -178,6 +196,7 @@ static void __init mynet_n750_setup(void)
mdiobus_register_board_info(mynet_n750_mdio0_info,
ARRAY_SIZE(mynet_n750_mdio0_info));
+ ath79_mdio0_data.reset = mynet_n750_mdio_fixup;
ath79_register_mdio(0, 0x0);
mynet_n750_get_mac("lanmac=", ath79_eth0_data.mac_addr);