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authorjuhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2013-12-17 22:14:11 +0000
committerjuhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2013-12-17 22:14:11 +0000
commit0d38650d6cd1b597d9840f8c234d7d4a39f45a97 (patch)
tree332f38fa3f0826a19417903a7f0437ca2dfc0264 /target/linux/ar71xx/files
parent48b2781cf59dc1b00cd35ec1b83bfe4beaecf092 (diff)
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/files')
-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);