[PATCH v2 1/2] soc/tegra: fuse: Support revision B01

Previously, all supported SoCs only used the A major revision. The
Tegra210B01 SoC incremented the major revision. Add support for this.

Signed-off-by: Aaron Kling <[email protected]>
---
 drivers/soc/tegra/fuse/fuse-tegra.c    |  1 +
 drivers/soc/tegra/fuse/tegra-apbmisc.c | 51 +++++++++++++++++++++-------------
 include/soc/tegra/fuse.h               |  1 +
 3 files changed, 33 insertions(+), 20 deletions(-)

diff --git a/drivers/soc/tegra/fuse/fuse-tegra.c b/drivers/soc/tegra/fuse/fuse-tegra.c
index 78b054d43a422..a37642dc92c61 100644
--- a/drivers/soc/tegra/fuse/fuse-tegra.c
+++ b/drivers/soc/tegra/fuse/fuse-tegra.c
@@ -34,6 +34,7 @@ static const char *tegra_revision_name[TEGRA_REVISION_MAX] = {
 	[TEGRA_REVISION_A03]     = "A03",
 	[TEGRA_REVISION_A03p]    = "A03 prime",
 	[TEGRA_REVISION_A04]     = "A04",
+	[TEGRA_REVISION_B01]     = "B01",
 };
 
 static const char *tegra_platform_name[TEGRA_PLATFORM_MAX] = {
diff --git a/drivers/soc/tegra/fuse/tegra-apbmisc.c b/drivers/soc/tegra/fuse/tegra-apbmisc.c
index 6af69ccaa295c..a4fb0ecd15cf3 100644
--- a/drivers/soc/tegra/fuse/tegra-apbmisc.c
+++ b/drivers/soc/tegra/fuse/tegra-apbmisc.c
@@ -167,30 +167,41 @@ static const struct of_device_id apbmisc_match[] __initconst = {
 
 void __init tegra_init_revision(void)
 {
-	u8 chip_id, minor_rev;
+	u8 chip_id, major_rev, minor_rev;
 
 	chip_id = tegra_get_chip_id();
+	major_rev = tegra_get_major_rev();
 	minor_rev = tegra_get_minor_rev();
 
-	switch (minor_rev) {
-	case 1:
-		tegra_sku_info.revision = TEGRA_REVISION_A01;
-		break;
-	case 2:
-		tegra_sku_info.revision = TEGRA_REVISION_A02;
-		break;
-	case 3:
-		if (chip_id == TEGRA20 && (tegra_fuse_read_spare(18) ||
-					   tegra_fuse_read_spare(19)))
-			tegra_sku_info.revision = TEGRA_REVISION_A03p;
-		else
-			tegra_sku_info.revision = TEGRA_REVISION_A03;
-		break;
-	case 4:
-		tegra_sku_info.revision = TEGRA_REVISION_A04;
-		break;
-	default:
-		tegra_sku_info.revision = TEGRA_REVISION_UNKNOWN;
+	if (major_rev > 1) {
+		switch (minor_rev) {
+		case 1:
+			tegra_sku_info.revision = TEGRA_REVISION_B01;
+			break;
+		default:
+			tegra_sku_info.revision = TEGRA_REVISION_UNKNOWN;
+		}
+	} else {
+		switch (minor_rev) {
+		case 1:
+			tegra_sku_info.revision = TEGRA_REVISION_A01;
+			break;
+		case 2:
+			tegra_sku_info.revision = TEGRA_REVISION_A02;
+			break;
+		case 3:
+			if (chip_id == TEGRA20 && (tegra_fuse_read_spare(18) ||
+						   tegra_fuse_read_spare(19)))
+				tegra_sku_info.revision = TEGRA_REVISION_A03p;
+			else
+				tegra_sku_info.revision = TEGRA_REVISION_A03;
+			break;
+		case 4:
+			tegra_sku_info.revision = TEGRA_REVISION_A04;
+			break;
+		default:
+			tegra_sku_info.revision = TEGRA_REVISION_UNKNOWN;
+		}
 	}
 
 	tegra_sku_info.sku_id = tegra_fuse_read_early(FUSE_SKU_INFO);
diff --git a/include/soc/tegra/fuse.h b/include/soc/tegra/fuse.h
index 8f421b9f7585c..30db79f7f17fd 100644
--- a/include/soc/tegra/fuse.h
+++ b/include/soc/tegra/fuse.h
@@ -33,6 +33,7 @@ enum tegra_revision {
 	TEGRA_REVISION_A03,
 	TEGRA_REVISION_A03p,
 	TEGRA_REVISION_A04,
+	TEGRA_REVISION_B01,
 	TEGRA_REVISION_MAX,
 };
 

-- 
2.54.0