From: Aaron Kling via B4 Relay <devnull+webgeek1234.gmail.com@kernel.org>
To: Thierry Reding <thierry.reding@kernel.org>,
Jonathan Hunter <jonathanh@nvidia.com>
Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org,
Aaron Kling <webgeek1234@gmail.com>
Subject: [PATCH 1/2] soc/tegra: fuse: Support revision B01
Date: Fri, 17 Jul 2026 18:19:40 -0500 [thread overview]
Message-ID: <20260717-t210b01-speedo-v1-1-f04a8bd4d997@gmail.com> (raw)
In-Reply-To: <20260717-t210b01-speedo-v1-0-f04a8bd4d997@gmail.com>
From: Aaron Kling <webgeek1234@gmail.com>
This is used by Tegra210B01
Signed-off-by: Aaron Kling <webgeek1234@gmail.com>
---
drivers/soc/tegra/fuse/fuse-tegra.c | 1 +
drivers/soc/tegra/fuse/tegra-apbmisc.c | 45 +++++++++++++++++++---------------
include/soc/tegra/fuse.h | 1 +
3 files changed, 27 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..8df3bcd148ba7 100644
--- a/drivers/soc/tegra/fuse/tegra-apbmisc.c
+++ b/drivers/soc/tegra/fuse/tegra-apbmisc.c
@@ -167,30 +167,35 @@ 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) {
+ tegra_sku_info.revision = TEGRA_REVISION_B01;
+ } 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
next prev parent reply other threads:[~2026-07-17 23:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-17 23:19 [PATCH 0/2] soc/tegra: fuse: Support Tegra210B01 Speedos Aaron Kling via B4 Relay
2026-07-17 23:19 ` Aaron Kling via B4 Relay [this message]
2026-07-17 23:19 ` [PATCH 2/2] soc/tegra: fuse: speedo-tegra210: Support revision B01 Aaron Kling via B4 Relay
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