diff --git a/drivers/net/wireless/ath5k/ath5k.h b/drivers/net/wireless/ath5k/ath5k.h
index 25c8e989d700f0ac4bd93a5b227f61bdea8aa6b8..c0b65961f55f169847ef73223a5b6ea9ed975807 100644
--- a/drivers/net/wireless/ath5k/ath5k.h
+++ b/drivers/net/wireless/ath5k/ath5k.h
@@ -966,6 +966,7 @@ struct ath5k_hw {
 	u16			ah_phy_revision;
 	u16			ah_radio_5ghz_revision;
 	u16			ah_radio_2ghz_revision;
+	u32			ah_phy_spending;
 
 	enum ath5k_version	ah_version;
 	enum ath5k_radio	ah_radio;
diff --git a/drivers/net/wireless/ath5k/hw.c b/drivers/net/wireless/ath5k/hw.c
index eec2b806a0de27dc99cc68a2035a3dc115c78bff..f4d383e956a00a9b274ffaa1d02ec1596566308a 100644
--- a/drivers/net/wireless/ath5k/hw.c
+++ b/drivers/net/wireless/ath5k/hw.c
@@ -208,7 +208,7 @@ struct ath5k_hw *ath5k_hw_attach(struct ath5k_softc *sc, u8 mac_version)
 
 	/* Identify single chip solutions */
 	if((srev <= AR5K_SREV_VER_AR5414) &&
-	(srev >= AR5K_SREV_VER_AR2424)) {
+	(srev >= AR5K_SREV_VER_AR2413)) {
 		ah->ah_single_chip = true;
 	} else {
 		ah->ah_single_chip = false;
@@ -223,10 +223,33 @@ struct ath5k_hw *ath5k_hw_attach(struct ath5k_softc *sc, u8 mac_version)
 		ah->ah_radio = AR5K_RF5110;
 	} else if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_5112) {
 		ah->ah_radio = AR5K_RF5111;
-	} else if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_SC1) {
+		ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5111;
+	} else if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_SC0) {
+
 		ah->ah_radio = AR5K_RF5112;
+
+		if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_5112A) {
+			ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5112;
+		} else {
+			ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5112A;
+		}
+
+	} else if (ah->ah_radio_5ghz_revision < AR5K_SREV_RAD_SC1) {
+		ah->ah_radio = AR5K_RF2413;
+		ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5112A;
 	} else {
+
 		ah->ah_radio = AR5K_RF5413;
+
+		if (ah->ah_mac_srev <= AR5K_SREV_VER_AR5424 &&
+			ah->ah_mac_srev >= AR5K_SREV_VER_AR2424)
+			ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5424;
+		else if (ah->ah_mac_srev >= AR5K_SREV_VER_AR2425)
+			ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5112;
+		else
+			ah->ah_phy_spending = AR5K_PHY_SPENDING_RF5112A;
+
+
 	}
 
 	ah->ah_phy = AR5K_PHY(0);
diff --git a/drivers/net/wireless/ath5k/reg.h b/drivers/net/wireless/ath5k/reg.h
index 2f41c83986026d4b27887d9329678e01ae3d7d4d..30629b3e37c25039fd61661c5b861c2a09e3aeba 100644
--- a/drivers/net/wireless/ath5k/reg.h
+++ b/drivers/net/wireless/ath5k/reg.h
@@ -1923,7 +1923,9 @@ after DFS is enabled */
 #define AR5K_PHY_SDELAY_32MHZ		0x000000ff
 #define AR5K_PHY_SPENDING		0x99f8
 #define AR5K_PHY_SPENDING_RF5111	0x00000018
-#define AR5K_PHY_SPENDING_RF5112	0x00000014
+#define AR5K_PHY_SPENDING_RF5112	0x00000014 /* <- i 've only seen this on 2425 dumps ! */
+#define AR5K_PHY_SPENDING_RF5112A	0x0000000e /* but since i only have 5112A-based chips */
+#define AR5K_PHY_SPENDING_RF5424	0x00000012 /* to test it might be also for old 5112.  */
 
 /*
  * Misc PHY/radio registers [5110 - 5111]