msm: acpuclock-7201: Ignore vdd switch request for v1.0 7x27a/7x25a
v1.0 of 7x27a/7x25a does not have working vdd switch support.
Change-Id: Idd1e2599f1029448203b425630475ece7e4c4a97
Signed-off-by: Pankaj Kumar <pakuma@codeaurora.org>
diff --git a/arch/arm/mach-msm/acpuclock-7201.c b/arch/arm/mach-msm/acpuclock-7201.c
index 9fbe364..75b436d 100644
--- a/arch/arm/mach-msm/acpuclock-7201.c
+++ b/arch/arm/mach-msm/acpuclock-7201.c
@@ -487,6 +487,14 @@
{
uint32_t current_vdd;
+ /*
+ * NOTE: v1.0 of 7x27a/7x25a chip doesn't have working
+ * VDD switching support.
+ */
+ if ((cpu_is_msm7x27a() || cpu_is_msm7x25a()) &&
+ (SOCINFO_VERSION_MINOR(socinfo_get_version()) < 1))
+ return 0;
+
current_vdd = readl_relaxed(A11S_VDD_SVS_PLEVEL_ADDR) & 0x07;
pr_debug("Switching VDD from %u mV -> %d mV\n",