ath9k: fix PLL initialization for AR9550

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index c042daa..e9124b4 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -868,7 +868,7 @@ static void ath9k_hw_init_pll(struct ath_hw *ah,
                /* program BB PLL phase_shift */
                REG_RMW_FIELD(ah, AR_CH0_BB_DPLL3,
                              AR_CH0_BB_DPLL3_PHASE_SHIFT, 0x1);
-       } else if (AR_SREV_9340(ah)) {
+       } else if (AR_SREV_9340(ah) || AR_SREV_9550(ah)) {
                u32 regval, pll2_divint, pll2_divfrac, refdiv;
 
                REG_WRITE(ah, AR_RTC_PLL_CONTROL, 0x1142c);
@@ -882,9 +882,15 @@ static void ath9k_hw_init_pll(struct ath_hw *ah,
                        pll2_divfrac = 0x1eb85;
                        refdiv = 3;
                } else {
-                       pll2_divint = 88;
-                       pll2_divfrac = 0;
-                       refdiv = 5;
+                       if (AR_SREV_9340(ah)) {
+                               pll2_divint = 88;
+                               pll2_divfrac = 0;
+                               refdiv = 5;
+                       } else {
+                               pll2_divint = 0x11;
+                               pll2_divfrac = 0x26666;
+                               refdiv = 1;
+                       }
                }
 
                regval = REG_READ(ah, AR_PHY_PLL_MODE);
@@ -897,8 +903,12 @@ static void ath9k_hw_init_pll(struct ath_hw *ah,
                udelay(100);
 
                regval = REG_READ(ah, AR_PHY_PLL_MODE);
-               regval = (regval & 0x80071fff) | (0x1 << 30) | (0x1 << 13) |
-                        (0x4 << 26) | (0x18 << 19);
+               if (AR_SREV_9340(ah))
+                       regval = (regval & 0x80071fff) | (0x1 << 30) |
+                                (0x1 << 13) | (0x4 << 26) | (0x18 << 19);
+               else
+                       regval = (regval & 0x80071fff) | (0x3 << 30) |
+                                (0x1 << 13) | (0x4 << 26) | (0x60 << 19);
                REG_WRITE(ah, AR_PHY_PLL_MODE, regval);
                REG_WRITE(ah, AR_PHY_PLL_MODE,
                          REG_READ(ah, AR_PHY_PLL_MODE) & 0xfffeffff);
@@ -909,7 +919,8 @@ static void ath9k_hw_init_pll(struct ath_hw *ah,
 
        REG_WRITE(ah, AR_RTC_PLL_CONTROL, pll);
 
-       if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah))
+       if (AR_SREV_9485(ah) || AR_SREV_9340(ah) || AR_SREV_9330(ah) ||
+           AR_SREV_9550(ah))
                udelay(1000);
 
        /* Switch the core clock for ar9271 to 117Mhz */
@@ -922,7 +933,7 @@ static void ath9k_hw_init_pll(struct ath_hw *ah,
 
        REG_WRITE(ah, AR_RTC_SLEEP_CLK, AR_RTC_FORCE_DERIVED_CLK);
 
-       if (AR_SREV_9340(ah)) {
+       if (AR_SREV_9340(ah) || AR_SREV_9550(ah)) {
                if (ah->is_clk_25mhz) {
                        REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x17c << 1);
                        REG_WRITE(ah, AR_SLP32_MODE, 0x0010f3d7);