From: Felix Fietkau <nbd@openwrt.org>
Date: Mon, 17 Sep 2012 11:17:29 +0000 (+0000)
Subject: ar71xx: add missing code for ar933x WMAC reset that was left out during the ar71xx... 
X-Git-Tag: v19.07.0-rc1~23533
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=e8893fdf7a151854f0edcee6863bd7e81e887705;p=openwrt%2Fstaging%2Fhauke.git

ar71xx: add missing code for ar933x WMAC reset that was left out during the ar71xx->ath79 migration, should fix wifi stability issues on ar933x

SVN-Revision: 33446
---

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)