Hi,
I have found that the Longhaul v2 is never
selected for VIA C3 chips. The Longhaul v1
is selected for the Longhaul v2 capable chips.
I do not know if it is done on purpose or just
a typo (see the patch below).
I have run the kernel with the patch on
VIA C3 C5B stepping 3 CPU and the Longhaul v2
works (no voltage scaling supported however).
The only difference to the v1 is the message:
Failed to set requested frequency!
Enabling Ignore Revision ID option.
but the frequency scaling works and
there is no message:
Regards,
Krzysztof
From: Krzysztof Helt <krzysztof.h1@xxxxx>
Subject: [PATCH] enable Longhaul v2 for VIA C3 chips which support it
Use the Longhaul v2 for VIA C3 chips which
support it instead of the Longhaul v1).
Signed-off-by: Krzysztof Helt <krzysztof.h1@xxxxx>
---
arch/x86/kernel/cpu/cpufreq/longhaul.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kernel/cpu/cpufreq/longhaul.c b/arch/x86/kernel/cpu/cpufreq/longhaul.c
index a4cff5d..4c1aa3c 100644
--- a/arch/x86/kernel/cpu/cpufreq/longhaul.c
+++ b/arch/x86/kernel/cpu/cpufreq/longhaul.c
@@ -809,7 +809,7 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy)
sizeof(samuel2_eblcr));
break;
case 1 ... 15:
- longhaul_version = TYPE_LONGHAUL_V1;
+ longhaul_version = TYPE_LONGHAUL_V2;
if (c->x86_mask < 8) {
cpu_model = CPU_SAMUEL2;
cpuname = "C3 'Samuel 2' [C5B]";
--
1.5.2.2
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