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-rw-r--r--target/linux/generic/patches-4.1/072-14-bgmac-reset-all-4-GMAC-cores-on-init.patch28
1 files changed, 28 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.1/072-14-bgmac-reset-all-4-GMAC-cores-on-init.patch b/target/linux/generic/patches-4.1/072-14-bgmac-reset-all-4-GMAC-cores-on-init.patch
new file mode 100644
index 0000000..2a913a6
--- /dev/null
+++ b/target/linux/generic/patches-4.1/072-14-bgmac-reset-all-4-GMAC-cores-on-init.patch
@@ -0,0 +1,28 @@
+From: Felix Fietkau <nbd@openwrt.org>
+Date: Mon, 13 Apr 2015 15:56:26 +0200
+Subject: [PATCH] bgmac: reset all 4 GMAC cores on init
+
+On a BCM4709 based device, I found that GMAC cores may be enabled at
+probe time, but only become usable after a full reset.
+Disable cores before re-enabling them to ensure that they are properly
+reset.
+
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+---
+
+--- a/drivers/net/ethernet/broadcom/bgmac.c
++++ b/drivers/net/ethernet/broadcom/bgmac.c
+@@ -1623,8 +1623,11 @@ static int bgmac_probe(struct bcma_devic
+ ns_core = bcma_find_core_unit(core->bus,
+ BCMA_CORE_MAC_GBIT,
+ ns_gmac);
+- if (ns_core && !bcma_core_is_enabled(ns_core))
+- bcma_core_enable(ns_core, 0);
++ if (!ns_core)
++ continue;
++
++ bcma_core_disable(ns_core, 0);
++ bcma_core_enable(ns_core, 0);
+ }
+ }
+