ARM: OMAP: ID: Chip detection for OMAP4470

Add support for detection of the next chip in the OMAP4 family: OMAP4470 ES1.0

For more details on OMAP4470, visit:
http://focus.ti.com/general/docs/wtbu/wtbuproductcontent.tsp?templateId=6123&navigationId=12869&contentId=123362

Signed-off-by: Leonid Iziumtsev <x0153368@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 9 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index 5bb4ee18564a..439afe7acdca 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -371,7 +371,7 @@ static void __init omap4_check_revision(void)
          * Few initial 4430 ES2.0 samples IDCODE is same as ES1.0
          * Use ARM register to detect the correct ES version
          */
-        if (!rev && (hawkeye != 0xb94e)) {
+        if (!rev && (hawkeye != 0xb94e) && (hawkeye != 0xb975)) {
                 idcode = read_cpuid(CPUID_ID);
                 rev = (idcode & 0xf) - 1;
         }
@@ -408,6 +408,14 @@ static void __init omap4_check_revision(void)
                         break;
                 }
                 break;
+        case 0xb975:
+                switch (rev) {
+                case 0:
+                default:
+                        omap_revision = OMAP4470_REV_ES1_0;
+                        break;
+                }
+                break;
         default:
                 /* Unknown default to latest silicon rev as default */
                 omap_revision = OMAP4430_REV_ES2_3;