1 files changed, 37 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index f61f1bf68df4..43969da5d50b 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -628,6 +628,41 @@ void __init omap5xxx_check_revision(void)
         pr_info("%s %s\n", soc_name, soc_rev);
 }
 
+void __init dra7xxx_check_revision(void)
+{
+        u32 idcode;
+        u16 hawkeye;
+        u8 rev;
+
+        idcode = read_tap_reg(OMAP_TAP_IDCODE);
+        hawkeye = (idcode >> 12) & 0xffff;
+        rev = (idcode >> 28) & 0xff;
+        switch (hawkeye) {
+        case 0xb990:
+                switch (rev) {
+                case 0:
+                        omap_revision = DRA752_REV_ES1_0;
+                        break;
+                case 1:
+                default:
+                        omap_revision = DRA752_REV_ES1_1;
+                }
+                break;
+
+        default:
+                /* Unknown default to latest silicon rev as default*/
+                pr_warn("%s: unknown idcode=0x%08x (hawkeye=0x%08x,rev=0x%d)\n",
+                        __func__, idcode, hawkeye, rev);
+                omap_revision = DRA752_REV_ES1_1;
+        }
+
+        sprintf(soc_name, "DRA%03x", omap_rev() >> 16);
+        sprintf(soc_rev, "ES%d.%d", (omap_rev() >> 12) & 0xf,
+                (omap_rev() >> 8) & 0xf);
+
+        pr_info("%s %s\n", soc_name, soc_rev);
+}
+
 /*
  * Set up things for map_io and processor detection later on. Gets called
  * pretty much first thing from board init. For multi-omap, this gets
@@ -669,6 +704,8 @@ static const char * __init omap_get_family(void)
                 return kasprintf(GFP_KERNEL, "OMAP5");
         else if (soc_is_am43xx())
                 return kasprintf(GFP_KERNEL, "AM43xx");
+        else if (soc_is_dra7xx())
+                return kasprintf(GFP_KERNEL, "DRA7");
         else
                 return kasprintf(GFP_KERNEL, "Unknown");
 }