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-rw-r--r--arch/arm/mach-omap2/id.c31
1 files changed, 28 insertions, 3 deletions
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index f48a4b2654dd..a091b53657b9 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -246,6 +246,31 @@ void __init omap3_check_revision(void)
}
}
+void __init omap4_check_revision(void)
+{
+ u32 idcode;
+ u16 hawkeye;
+ u8 rev;
+ char *rev_name = "ES1.0";
+
+ /*
+ * The IC rev detection is done with hawkeye and rev.
+ * Note that rev does not map directly to defined processor
+ * revision numbers as ES1.0 uses value 0.
+ */
+ idcode = read_tap_reg(OMAP_TAP_IDCODE);
+ hawkeye = (idcode >> 12) & 0xffff;
+ rev = (idcode >> 28) & 0xff;
+
+ if ((hawkeye == 0xb852) && (rev == 0x0)) {
+ omap_revision = OMAP4430_REV_ES1_0;
+ pr_info("OMAP%04x %s\n", omap_rev() >> 16, rev_name);
+ return;
+ }
+
+ pr_err("Unknown OMAP4 CPU id\n");
+}
+
#define OMAP3_SHOW_FEATURE(feat) \
if (omap3_has_ ##feat()) \
printk(#feat" ");
@@ -277,10 +302,10 @@ void __init omap3_cpuinfo(void)
} else if (omap3_has_iva() && omap3_has_sgx()) {
/* OMAP3430, OMAP3525, OMAP3515, OMAP3503 devices */
strcpy(cpu_name, "OMAP3430/3530");
- } else if (omap3_has_sgx()) {
+ } else if (omap3_has_iva()) {
omap_revision = OMAP3525_REV(rev);
strcpy(cpu_name, "OMAP3525");
- } else if (omap3_has_iva()) {
+ } else if (omap3_has_sgx()) {
omap_revision = OMAP3515_REV(rev);
strcpy(cpu_name, "OMAP3515");
} else {
@@ -336,7 +361,7 @@ void __init omap2_check_revision(void)
omap3_check_features();
omap3_cpuinfo();
} else if (cpu_is_omap44xx()) {
- printk(KERN_INFO "FIXME: CPU revision = OMAP4430\n");
+ omap4_check_revision();
return;
} else {
pr_err("OMAP revision unknown, please fix!\n");