ARM: OMAP2+: AM43x: Add ID for ES1.2

ES1.2 is a minor variant of ES1.1. Major changes since ES1.1 are
updating ROM for fixing the following boot modes:
- NAND boot
- UART boot
- Ethernet boot
- USB HOST/Client boot
This patch adds ID support for AM437x ES1.2 silicon.
There are no additional kernel fixes required for ES1.2 silicon.

Latest Technical Documentation can be found here:
http://www.ti.com/lsds/ti/arm/sitara_arm_cortex_a_processor/arm_cortex_a9_core/am437x_arm_cortex_a9/tech_docs.page

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

2 files changed, 7 insertions, 2 deletions

diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index 53841dea80ea..c25feba05818 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -471,11 +471,15 @@ void __init omap3xxx_check_revision(void)
                         cpu_rev = "1.0";
                         break;
                 case 1:
-                /* FALLTHROUGH */
-                default:
                         omap_revision = AM437X_REV_ES1_1;
                         cpu_rev = "1.1";
                         break;
+                case 2:
+                /* FALLTHROUGH */
+                default:
+                        omap_revision = AM437X_REV_ES1_2;
+                        cpu_rev = "1.2";
+                        break;
                 }
                 break;
         case 0xb8f2:
diff --git a/arch/arm/mach-omap2/soc.h b/arch/arm/mach-omap2/soc.h
index 4376f59626d1..c1a3b4416311 100644
--- a/arch/arm/mach-omap2/soc.h
+++ b/arch/arm/mach-omap2/soc.h
@@ -446,6 +446,7 @@ IS_OMAP_TYPE(3430, 0x3430)
 #define AM437X_CLASS            0x43700000
 #define AM437X_REV_ES1_0        (AM437X_CLASS | (0x10 << 8))
 #define AM437X_REV_ES1_1        (AM437X_CLASS | (0x11 << 8))
+#define AM437X_REV_ES1_2        (AM437X_CLASS | (0x12 << 8))
 
 #define OMAP443X_CLASS          0x44300044
 #define OMAP4430_REV_ES1_0      (OMAP443X_CLASS | (0x10 << 8))