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authornbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2012-09-17 11:17:29 +0000
committernbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2012-09-17 11:17:29 +0000
commit6cd281447f0110ac78abe945ea159134ec3a9986 (patch)
treeee3b95cca8abebe0e530e4b6b647ed187806aa79 /target/linux
parent55c1daea2cd5985214ec27adcf1bc650ab8e5c46 (diff)
ar71xx: add missing code for ar933x WMAC reset that was left out during the ar71xx->ath79 migration, should fix wifi stability issues on ar933x
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33446 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux')
-rw-r--r--target/linux/ar71xx/patches-3.3/650-MIPS-ath79-fix-ar933x-reset.patch31
1 files changed, 31 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.3/650-MIPS-ath79-fix-ar933x-reset.patch b/target/linux/ar71xx/patches-3.3/650-MIPS-ath79-fix-ar933x-reset.patch
new file mode 100644
index 0000000000..a81d6ea6e0
--- /dev/null
+++ b/target/linux/ar71xx/patches-3.3/650-MIPS-ath79-fix-ar933x-reset.patch
@@ -0,0 +1,31 @@
+--- a/arch/mips/ath79/dev-wmac.c
++++ b/arch/mips/ath79/dev-wmac.c
+@@ -67,10 +67,27 @@ static void __init ar913x_wmac_setup(voi
+
+ static int ar933x_wmac_reset(void)
+ {
++ int retries = 20;
++
+ ath79_device_reset_set(AR933X_RESET_WMAC);
+ ath79_device_reset_clear(AR933X_RESET_WMAC);
+
+- return 0;
++ while (1) {
++ u32 bootstrap;
++
++ bootstrap = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
++ if ((bootstrap & AR933X_BOOTSTRAP_EEPBUSY) == 0)
++ return 0;
++
++ if (retries-- == 0)
++ break;
++
++ udelay(10000);
++ retries++;
++ }
++
++ pr_err("ar933x: WMAC reset timed out");
++ return -ETIMEDOUT;
+ }
+
+ static int ar933x_r1_get_wmac_revision(void)