ar71xx: add missing code for ar933x WMAC reset that was left out duri…

…ng 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
dtaht · Sep 17, 2012 · 6cd2814 · 6cd2814
1 parent 55c1dae
commit 6cd2814
Showing 1 changed file with 31 additions and 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
@@ -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)