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

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33446 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2012-09-17 11:17:29 +00:00
parent 55c1daea2c
commit 6cd281447f
1 changed files with 31 additions and 0 deletions
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31
target/linux/ar71xx/patches-3.3/650-MIPS-ath79-fix-ar933x-reset.patch Normal file
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@ -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)