ath9k: clean up pll code for ar9002 to fix 5/10 mhz pll settings for 5ghz

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27362 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/mac80211/patches/541-ath9k_pllclock_fix.patch b/package/mac80211/patches/541-ath9k_pllclock_fix.patch
new file mode 100644 (file)
index 0000000..4738159
--- /dev/null
+++ b/package/mac80211/patches/541-ath9k_pllclock_fix.patch
@@ -0,0 +1,42 @@
+--- a/drivers/net/wireless/ath/ath9k/ar9002_phy.c
++++ b/drivers/net/wireless/ath/ath9k/ar9002_phy.c
+@@ -447,26 +447,27 @@ static void ar9002_olc_init(struct ath_h
+ static u32 ar9002_hw_compute_pll_control(struct ath_hw *ah,
+                                        struct ath9k_channel *chan)
+ {
++      int ref_div = 5;
++      int pll_div = 0x2c;
+       u32 pll;
+ 
+-      pll = SM(0x5, AR_RTC_9160_PLL_REFDIV);
++      if (chan && IS_CHAN_5GHZ(chan) && !IS_CHAN_A_FAST_CLOCK(ah, chan)) {
++              if (AR_SREV_9280_20(ah)) {
++                      ref_div = 10;
++                      pll_div = 0x50;
++              } else {
++                      pll_div = 0x28;
++              }
++      }
++
++      pll = SM(ref_div, AR_RTC_9160_PLL_REFDIV);
++      pll |= SM(pll_div, AR_RTC_9160_PLL_DIV);
+ 
+       if (chan && IS_CHAN_HALF_RATE(chan))
+               pll |= SM(0x1, AR_RTC_9160_PLL_CLKSEL);
+       else if (chan && IS_CHAN_QUARTER_RATE(chan))
+               pll |= SM(0x2, AR_RTC_9160_PLL_CLKSEL);
+ 
+-      if (chan && IS_CHAN_5GHZ(chan)) {
+-              if (IS_CHAN_A_FAST_CLOCK(ah, chan))
+-                      pll = 0x142c;
+-              else if (AR_SREV_9280_20(ah))
+-                      pll = 0x2850;
+-              else
+-                      pll |= SM(0x28, AR_RTC_9160_PLL_DIV);
+-      } else {
+-              pll |= SM(0x2c, AR_RTC_9160_PLL_DIV);
+-      }
+-
+       return pll;
+ }
+