ar71xx: fix ath79_soc_rev value for QCA9531 ver. 2

ath9k expects to get revision id 2 for the QCA9531 ver. 2 rev. 0. This
fixes the very low TX power on some devices like the TP-LINK
TL-WR841ND v10.

As ath79_soc_rev is only used to get the revision number to ath9k on the
QCA9533, just set it to the expected value on the ver. 2.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Tested-by: Felix Kaechele <felix@kaechele.ca>

SVN-Revision: 47262

target/linux/ar71xx/patches-4.1/620-MIPS-ath79-add-support-for-QCA953x-SoC.patch

@@ -413,12 +413,13 @@ meaning of the bits CPUCLK_FROM_CPUPLL and DDRCLK_FROM_DDRPLL is reversed.
  
  	id = ath79_reset_rr(AR71XX_RESET_REG_REV_ID);
  	major = id & REV_ID_MAJOR_MASK;
-@@ -152,6 +153,16 @@ static void __init ath79_detect_sys_type
+@@ -152,6 +153,17 @@ static void __init ath79_detect_sys_type
  		rev = id & AR934X_REV_ID_REVISION_MASK;
  		break;
  
 +	case REV_ID_MAJOR_QCA9533_V2:
 +		ver = 2;
++		ath79_soc_rev = 2;
 +		/* drop through */
 +
 +	case REV_ID_MAJOR_QCA9533:
@@ -430,15 +431,23 @@ meaning of the bits CPUCLK_FROM_CPUPLL and DDRCLK_FROM_DDRPLL is reversed.
  	case REV_ID_MAJOR_QCA9556:
  		ath79_soc = ATH79_SOC_QCA9556;
  		chip = "9556";
-@@ -170,7 +181,7 @@ static void __init ath79_detect_sys_type
+@@ -168,11 +180,12 @@ static void __init ath79_detect_sys_type
+ 		panic("ath79: unknown SoC, id:0x%08x", id);
+ 	}
  
- 	ath79_soc_rev = rev;
+-	ath79_soc_rev = rev;
++	if (ver == 1)
++		ath79_soc_rev = rev;
  
 -	if (soc_is_qca955x())
+-		sprintf(ath79_sys_type, "Qualcomm Atheros QCA%s rev %u",
+-			chip, rev);
 +	if (soc_is_qca953x() || soc_is_qca955x())
- 		sprintf(ath79_sys_type, "Qualcomm Atheros QCA%s rev %u",
- 			chip, rev);
++		sprintf(ath79_sys_type, "Qualcomm Atheros QCA%s ver %u rev %u",
++			chip, ver, rev);
  	else
+ 		sprintf(ath79_sys_type, "Atheros AR%s rev %u", chip, rev);
+ 	pr_info("SoC: %s\n", ath79_sys_type);
 --- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
 +++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
 @@ -105,6 +105,21 @@

target/linux/ar71xx/patches-4.1/621-MIPS-ath79-add-support-for-QCA956x-SoC.patch

@@ -452,7 +452,7 @@
  		return -ENODEV;
 --- a/arch/mips/ath79/setup.c
 +++ b/arch/mips/ath79/setup.c
-@@ -175,14 +175,29 @@ static void __init ath79_detect_sys_type
+@@ -176,6 +176,18 @@ static void __init ath79_detect_sys_type
  		rev = id & QCA955X_REV_ID_REVISION_MASK;
  		break;
  
@@ -471,19 +471,20 @@
  	default:
  		panic("ath79: unknown SoC, id:0x%08x", id);
  	}
- 
- 	ath79_soc_rev = rev;
+@@ -183,9 +195,12 @@ static void __init ath79_detect_sys_type
+ 	if (ver == 1)
+ 		ath79_soc_rev = rev;
  
 -	if (soc_is_qca953x() || soc_is_qca955x())
--		sprintf(ath79_sys_type, "Qualcomm Atheros QCA%s rev %u",
 +	if (soc_is_qca953x() || soc_is_qca955x() || soc_is_qca9561())
-+		sprintf(ath79_sys_type, "Qualcomm Atheros QCA%s ver %u rev %u",
-+			chip, ver, rev);
+ 		sprintf(ath79_sys_type, "Qualcomm Atheros QCA%s ver %u rev %u",
+ 			chip, ver, rev);
 +	else if (soc_is_tp9343())
 +		sprintf(ath79_sys_type, "Qualcomm Atheros TP%s rev %u",
- 			chip, rev);
++			chip, rev);
  	else
  		sprintf(ath79_sys_type, "Atheros AR%s rev %u", chip, rev);
+ 	pr_info("SoC: %s\n", ath79_sys_type);
 --- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
 +++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
 @@ -143,6 +143,23 @@