From: Tony Lindgren <tony@atomide.com>
Date: Tue, 11 Mar 2008 10:51:34 +0000 (+0200)
Subject: ARM: OMAP3: Fix cpu detection for 34xx es2.0 and above
X-Git-Tag: v2.6.25-omap1~144
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=235a97a82e16f550090440e412e9457a9312585e;p=linux-2.6-omap-h63xx.git

ARM: OMAP3: Fix cpu detection for 34xx es2.0 and above

Revisions above ES2.0 should use just hawkeye and rev for
version detection.

Signed-off-by: Tony Lindgren <tony@atomide.com>
---

diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index a2109c1b8b1..54668a9b836 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -60,9 +60,6 @@ static struct omap_id omap_ids[] __initdata = {
 	{ .hawkeye = 0xb5d9, .dev = 0x4, .type = 0x24220000 },
 	{ .hawkeye = 0xb5d9, .dev = 0x8, .type = 0x24230000 },
 	{ .hawkeye = 0xb68a, .dev = 0x0, .type = 0x24300000 },
-	{ .hawkeye = 0xb7ae, .dev = 0xf, .type = 0x34300000 },
-	{ .hawkeye = 0xb7ae, .dev = 0x0, .type = 0x34301000 },
-	{ .hawkeye = 0xb7ae, .dev = 0xe, .type = 0x34302000 },
 };
 
 static u32 __init read_tap_reg(int reg)
@@ -89,16 +86,6 @@ static u32 __init read_tap_reg(int reg)
 		case OMAP_TAP_DIE_ID_2:	regval = 0x00000000; break;
 		case OMAP_TAP_DIE_ID_3:	regval = 0x2d2c0000; break;
 		}
-	} else if ((((cpuid >> 4) & 0xFFF) == 0xC08) && ((cpuid & 0xF) == 0x1)) {
-		switch (reg) {
-		case OMAP_TAP_IDCODE  : regval = 0x1b7ae02f; break;
-		/* Making DevType as 0xE in ES2 to differ from other ESx */
-		case OMAP_TAP_PROD_ID : regval = 0x000E00F0; break;
-		case OMAP_TAP_DIE_ID_0: regval = 0x0400800f; break;
-		case OMAP_TAP_DIE_ID_1: regval = 0x04013d1d; break;
-		case OMAP_TAP_DIE_ID_2: regval = 0x00000000; break;
-		case OMAP_TAP_DIE_ID_3: regval = 0x1fe80001; break;
-		}
 	} else
 		regval = __raw_readl(TAP_BASE + reg);
 
@@ -138,6 +125,17 @@ void __init omap2_check_revision(void)
 		prod_id, dev_type);
 #endif
 
+	/*
+	 * Detection for 34xx ES2.0 and above can be done with just
+	 * hawkeye and rev. See TRM 1.5.2 Device Identification.
+	 * Note that rev cannot be used directly as ES1.0 uses value 0.
+	 */
+	if (hawkeye == 0xb7ae) {
+		system_rev = 0x34300000 | ((1 + rev) << 12);
+		pr_info("OMAP%04x ES2.%i\n", system_rev >> 16, rev);
+		return;
+	}
+
 	/* Check hawkeye ids */
 	for (i = 0; i < ARRAY_SIZE(omap_ids); i++) {
 		if (hawkeye == omap_ids[i].hawkeye)
diff --git a/include/asm-arm/arch-omap/cpu.h b/include/asm-arm/arch-omap/cpu.h
index e8a4cf52778..ed86d5e2d4f 100644
--- a/include/asm-arm/arch-omap/cpu.h
+++ b/include/asm-arm/arch-omap/cpu.h
@@ -345,6 +345,8 @@ IS_OMAP_TYPE(3430, 0x3430)
 #define OMAP2430_REV_ES1_0	0x24300000
 #define OMAP3430_REV_ES1_0	0x34300000
 #define OMAP3430_REV_ES2_0	0x34301000
+#define OMAP3430_REV_ES2_1	0x34302000
+#define OMAP3430_REV_ES2_2	0x34303000
 
 /*
  * Macro to detect device type i.e. EMU/HS/TST/GP/BAD