Few initial omap4 es2 samples IDCODE is same as es1. This patch
uses ARM cpuid register to detect the ES version for such samples
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@xxxxxx>
---
arch/arm/mach-omap2/id.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index ae70ae9..0412233 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -308,6 +308,15 @@ static void __init omap4_check_revision(void)
hawkeye = (idcode >> 12) & 0xffff;
rev = (idcode >> 28) & 0xff;
+ /*
+ * Few initial ES2.0 samples IDCODE is same as ES1.0
+ * Use ARM register to detect the correct ES version
+ */
+ if (!rev) {
+ idcode = read_cpuid(CPUID_ID);
+ rev = (idcode & 0xf) - 1;
+ }
+
switch (hawkeye) {
case 0xb852:
switch (rev) {
--
1.6.0.4
--
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