From 1648ac50956c734dfc236b1031ed322ecdc25475 Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Mon, 12 Sep 2016 05:19:56 +0000
Subject: [PATCH] Report the Silicon Revisions for the AM335x SoCs correctly.

---
 sys/arm/ti/ti_cpuid.c | 26 +++++++++++++++++++++++---
 1 file changed, 23 insertions(+), 3 deletions(-)

diff --git a/sys/arm/ti/ti_cpuid.c b/sys/arm/ti/ti_cpuid.c
index b2f0f65ab9b6..63494abdf2d2 100644
--- a/sys/arm/ti/ti_cpuid.c
+++ b/sys/arm/ti/ti_cpuid.c
@@ -201,8 +201,10 @@ static void
 am335x_get_revision(void)
 {
 	uint32_t dev_feature;
-	uint8_t cpu_last_char;
+	char cpu_last_char;
 	bus_space_handle_t bsh;
+	int major;
+	int minor;
 
 	bus_space_map(fdtbus_bs_tag, AM335X_CONTROL_BASE, AM335X_CONTROL_SIZE, 0, &bsh);
 	chip_revision = bus_space_read_4(fdtbus_bs_tag, bsh, AM335X_CONTROL_DEVICE_ID);
@@ -232,8 +234,26 @@ am335x_get_revision(void)
 			cpu_last_char='x';
 	}
 
-	printf("Texas Instruments AM335%c Processor, Revision ES1.%u\n",
-		cpu_last_char, AM335X_DEVREV(chip_revision));
+	switch(AM335X_DEVREV(chip_revision)) {
+		case 0:
+			major = 1;
+			minor = 0;
+			break;
+		case 1:
+			major = 2;
+			minor = 0;
+			break;
+		case 2:
+			major = 2;
+			minor = 1;
+			break;
+		default:
+			major = 0;
+			minor = AM335X_DEVREV(chip_revision);
+			break;
+	}
+	printf("Texas Instruments AM335%c Processor, Revision ES%u.%u\n",
+		cpu_last_char, major, minor);
 }
 
 /**