From 24dcb9b90f385349289b00a4c4d6423342281b06 Mon Sep 17 00:00:00 2001
From: Nicholas Piggin <npiggin@gmail.com>
Date: Wed, 21 Feb 2018 05:08:27 +1000
Subject: [PATCH 04/13] powerpc/64s: Fix POWER9 DD2.2 and above in DT CPU
 features

References: bsc#1055117
Patch-mainline: v4.17-rc1
Git-commit: 9e9626ed3a4affe7fe0e17e98c357849ad299e50

The CPU_FTR_POWER9_DD2_1 flag is intended to be set for DD2.1 and
above (which is what the cputable setup does). Fix DT CPU features
quirk setup to match.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Merge with upstream changes]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Michal Suchanek <msuchanek@suse.de>
---
 arch/powerpc/kernel/dt_cpu_ftrs.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/kernel/dt_cpu_ftrs.c b/arch/powerpc/kernel/dt_cpu_ftrs.c
index 4313ff07edca..11a3a4fed3fb 100644
--- a/arch/powerpc/kernel/dt_cpu_ftrs.c
+++ b/arch/powerpc/kernel/dt_cpu_ftrs.c
@@ -708,11 +708,16 @@ static __init void cpufeatures_cpu_quirks(void)
 	 */
 	if ((version & 0xffffff00) == 0x004e0100)
 		cur_cpu_spec->cpu_features |= CPU_FTR_POWER9_DD1;
+	else if ((version & 0xffffefff) == 0x004e0200)
+		; /* DD2.0 has no feature flag */
 	else if ((version & 0xffffefff) == 0x004e0201)
 		cur_cpu_spec->cpu_features |= CPU_FTR_POWER9_DD2_1;
-	else if ((version & 0xffffefff) == 0x004e0202)
-		cur_cpu_spec->cpu_features |= CPU_FTR_P9_TM_HV_ASSIST |
-			CPU_FTR_P9_TM_XER_SO_BUG;
+	else if ((version & 0xffffefff) == 0x004e0202) {
+		cur_cpu_spec->cpu_features |= CPU_FTR_P9_TM_HV_ASSIST;
+		cur_cpu_spec->cpu_features |= CPU_FTR_P9_TM_XER_SO_BUG;
+		cur_cpu_spec->cpu_features |= CPU_FTR_POWER9_DD2_1;
+	} else /* DD2.1 and up have DD2_1 */
+		cur_cpu_spec->cpu_features |= CPU_FTR_POWER9_DD2_1;
 
 	if ((version & 0xffff0000) == 0x004e0000) {
 		cur_cpu_spec->cpu_features &= ~(CPU_FTR_DAWR);
-- 
2.13.6