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
2012-09-17 11:17:29 +00:00 · 2012-09-17 11:17:29 +00:00 · 0611e73d53
parent 1281f1c74c
commit 0611e73d53
1 changed files with 31 additions and 0 deletions
--- 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)