* [PATCH 0/2] soc/tegra: fuse: Support Tegra210B01 Speedos
@ 2026-07-17 23:19 Aaron Kling via B4 Relay
2026-07-17 23:19 ` [PATCH 1/2] soc/tegra: fuse: Support revision B01 Aaron Kling via B4 Relay
2026-07-17 23:19 ` [PATCH 2/2] soc/tegra: fuse: speedo-tegra210: " Aaron Kling via B4 Relay
0 siblings, 2 replies; 8+ messages in thread
From: Aaron Kling via B4 Relay @ 2026-07-17 23:19 UTC (permalink / raw)
To: Thierry Reding, Jonathan Hunter; +Cc: linux-tegra, linux-kernel, Aaron Kling
This series adds support for the b01 fuse revision, then adds speedo
support for known Tegra210B01 sku's.
Signed-off-by: Aaron Kling <webgeek1234@gmail.com>
---
Aaron Kling (2):
soc/tegra: fuse: Support revision B01
soc/tegra: fuse: speedo-tegra210: Support revision B01
drivers/soc/tegra/fuse/fuse-tegra.c | 1 +
drivers/soc/tegra/fuse/speedo-tegra210.c | 22 ++++++++++++++--
drivers/soc/tegra/fuse/tegra-apbmisc.c | 45 ++++++++++++++++++--------------
include/soc/tegra/fuse.h | 1 +
4 files changed, 47 insertions(+), 22 deletions(-)
---
base-commit: 1a1757b76427f6201bfe0bf1bea9f7574f332a93
change-id: 20260714-t210b01-speedo-07f8cd3b3aa3
Best regards,
--
Aaron Kling <webgeek1234@gmail.com>
^ permalink raw reply [flat|nested] 8+ messages in thread* [PATCH 1/2] soc/tegra: fuse: Support revision B01 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 2026-07-21 7:37 ` Mikko Perttunen 2026-07-17 23:19 ` [PATCH 2/2] soc/tegra: fuse: speedo-tegra210: " Aaron Kling via B4 Relay 1 sibling, 1 reply; 8+ messages in thread From: Aaron Kling via B4 Relay @ 2026-07-17 23:19 UTC (permalink / raw) To: Thierry Reding, Jonathan Hunter; +Cc: linux-tegra, linux-kernel, Aaron Kling 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 ^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: [PATCH 1/2] soc/tegra: fuse: Support revision B01 2026-07-17 23:19 ` [PATCH 1/2] soc/tegra: fuse: Support revision B01 Aaron Kling via B4 Relay @ 2026-07-21 7:37 ` Mikko Perttunen 0 siblings, 0 replies; 8+ messages in thread From: Mikko Perttunen @ 2026-07-21 7:37 UTC (permalink / raw) To: Thierry Reding, Jonathan Hunter, webgeek1234 Cc: linux-tegra, linux-kernel, Aaron Kling On Saturday, July 18, 2026 8:19 AM Aaron Kling via B4 Relay wrote: > From: Aaron Kling <webgeek1234@gmail.com> > > This is used by Tegra210B01 Please describe the change in full in the commit message, don't continue the paragraph from the subject. > > 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; To match the A revisions, I think better to check minor_rev as well and set to UNKNOWN if it's not as expected. Thank you! Mikko > + } 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 > > > ^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH 2/2] soc/tegra: fuse: speedo-tegra210: Support revision B01 2026-07-17 23:19 [PATCH 0/2] soc/tegra: fuse: Support Tegra210B01 Speedos Aaron Kling via B4 Relay 2026-07-17 23:19 ` [PATCH 1/2] soc/tegra: fuse: Support revision B01 Aaron Kling via B4 Relay @ 2026-07-17 23:19 ` Aaron Kling via B4 Relay 2026-07-21 7:43 ` Mikko Perttunen 2026-07-21 9:46 ` Jon Hunter 1 sibling, 2 replies; 8+ messages in thread From: Aaron Kling via B4 Relay @ 2026-07-17 23:19 UTC (permalink / raw) To: Thierry Reding, Jonathan Hunter; +Cc: linux-tegra, linux-kernel, Aaron Kling From: Aaron Kling <webgeek1234@gmail.com> Tegra210B01 has a separate set of skus and speedo tables Signed-off-by: Aaron Kling <webgeek1234@gmail.com> --- drivers/soc/tegra/fuse/speedo-tegra210.c | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) diff --git a/drivers/soc/tegra/fuse/speedo-tegra210.c b/drivers/soc/tegra/fuse/speedo-tegra210.c index 06c2bcbee5734..699751f4bd0c0 100644 --- a/drivers/soc/tegra/fuse/speedo-tegra210.c +++ b/drivers/soc/tegra/fuse/speedo-tegra210.c @@ -65,7 +65,25 @@ static void __init rev_sku_to_speedo_ids(struct tegra_sku_info *sku_info, sku_info->gpu_speedo_id = 0; *threshold = THRESHOLD_INDEX_0; - if (sku_info->revision >= TEGRA_REVISION_A02) { + if (sku_info->revision >= TEGRA_REVISION_B01) { + sku_info->gpu_speedo_id = 1; + + switch (sku) { + case 0x00: /* Engineering SKU */ + case 0x01: /* Engineering SKU */ + case 0x83: + break; + + case 0x87: + sku_info->cpu_speedo_id = 3; + break; + + default: + pr_err("Tegra210B01: unknown SKU %#04x\n", sku); + /* Using the default for the error case */ + break; + } + } else if (sku_info->revision >= TEGRA_REVISION_A02) { switch (sku) { case 0x00: /* Engineering SKU */ case 0x01: /* Engineering SKU */ @@ -154,7 +172,7 @@ void __init tegra210_init_speedo_data(struct tegra_sku_info *sku_info) speedo_revision = get_speedo_revision(); pr_info("Speedo Revision %u\n", speedo_revision); - if (speedo_revision >= 3) { + if (sku_info->revision == TEGRA_REVISION_B01 || speedo_revision >= 3) { sku_info->cpu_speedo_value = cpu_speedo[0]; sku_info->gpu_speedo_value = cpu_speedo[2]; sku_info->soc_speedo_value = soc_speedo[0]; -- 2.54.0 ^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: [PATCH 2/2] soc/tegra: fuse: speedo-tegra210: Support revision B01 2026-07-17 23:19 ` [PATCH 2/2] soc/tegra: fuse: speedo-tegra210: " Aaron Kling via B4 Relay @ 2026-07-21 7:43 ` Mikko Perttunen 2026-07-21 9:46 ` Jon Hunter 1 sibling, 0 replies; 8+ messages in thread From: Mikko Perttunen @ 2026-07-21 7:43 UTC (permalink / raw) To: Thierry Reding, Jonathan Hunter, webgeek1234 Cc: linux-tegra, linux-kernel, Aaron Kling On Saturday, July 18, 2026 8:19 AM Aaron Kling via B4 Relay wrote: > From: Aaron Kling <webgeek1234@gmail.com> > > Tegra210B01 has a separate set of skus and speedo tables > > Signed-off-by: Aaron Kling <webgeek1234@gmail.com> > --- > drivers/soc/tegra/fuse/speedo-tegra210.c | 22 ++++++++++++++++++++-- > 1 file changed, 20 insertions(+), 2 deletions(-) > > diff --git a/drivers/soc/tegra/fuse/speedo-tegra210.c b/drivers/soc/tegra/fuse/speedo-tegra210.c > index 06c2bcbee5734..699751f4bd0c0 100644 > --- a/drivers/soc/tegra/fuse/speedo-tegra210.c > +++ b/drivers/soc/tegra/fuse/speedo-tegra210.c > @@ -65,7 +65,25 @@ static void __init rev_sku_to_speedo_ids(struct tegra_sku_info *sku_info, > sku_info->gpu_speedo_id = 0; > *threshold = THRESHOLD_INDEX_0; > > - if (sku_info->revision >= TEGRA_REVISION_A02) { > + if (sku_info->revision >= TEGRA_REVISION_B01) { > + sku_info->gpu_speedo_id = 1; > + > + switch (sku) { > + case 0x00: /* Engineering SKU */ > + case 0x01: /* Engineering SKU */ > + case 0x83: > + break; > + > + case 0x87: > + sku_info->cpu_speedo_id = 3; > + break; > + > + default: > + pr_err("Tegra210B01: unknown SKU %#04x\n", sku); > + /* Using the default for the error case */ > + break; > + } > + } else if (sku_info->revision >= TEGRA_REVISION_A02) { > switch (sku) { > case 0x00: /* Engineering SKU */ > case 0x01: /* Engineering SKU */ > @@ -154,7 +172,7 @@ void __init tegra210_init_speedo_data(struct tegra_sku_info *sku_info) > speedo_revision = get_speedo_revision(); > pr_info("Speedo Revision %u\n", speedo_revision); > > - if (speedo_revision >= 3) { > + if (sku_info->revision == TEGRA_REVISION_B01 || speedo_revision >= 3) { > sku_info->cpu_speedo_value = cpu_speedo[0]; > sku_info->gpu_speedo_value = cpu_speedo[2]; > sku_info->soc_speedo_value = soc_speedo[0]; > > -- > 2.54.0 > > > Thanks! Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com> ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH 2/2] soc/tegra: fuse: speedo-tegra210: Support revision B01 2026-07-17 23:19 ` [PATCH 2/2] soc/tegra: fuse: speedo-tegra210: " Aaron Kling via B4 Relay 2026-07-21 7:43 ` Mikko Perttunen @ 2026-07-21 9:46 ` Jon Hunter 2026-07-21 17:31 ` Aaron Kling 1 sibling, 1 reply; 8+ messages in thread From: Jon Hunter @ 2026-07-21 9:46 UTC (permalink / raw) To: webgeek1234, Thierry Reding; +Cc: linux-tegra, linux-kernel On 18/07/2026 00:19, Aaron Kling via B4 Relay wrote: > From: Aaron Kling <webgeek1234@gmail.com> > > Tegra210B01 has a separate set of skus and speedo tables > > Signed-off-by: Aaron Kling <webgeek1234@gmail.com> > --- > drivers/soc/tegra/fuse/speedo-tegra210.c | 22 ++++++++++++++++++++-- > 1 file changed, 20 insertions(+), 2 deletions(-) > > diff --git a/drivers/soc/tegra/fuse/speedo-tegra210.c b/drivers/soc/tegra/fuse/speedo-tegra210.c > index 06c2bcbee5734..699751f4bd0c0 100644 > --- a/drivers/soc/tegra/fuse/speedo-tegra210.c > +++ b/drivers/soc/tegra/fuse/speedo-tegra210.c > @@ -65,7 +65,25 @@ static void __init rev_sku_to_speedo_ids(struct tegra_sku_info *sku_info, > sku_info->gpu_speedo_id = 0; > *threshold = THRESHOLD_INDEX_0; > > - if (sku_info->revision >= TEGRA_REVISION_A02) { > + if (sku_info->revision >= TEGRA_REVISION_B01) { > + sku_info->gpu_speedo_id = 1; > + > + switch (sku) { > + case 0x00: /* Engineering SKU */ > + case 0x01: /* Engineering SKU */ > + case 0x83: > + break; > + > + case 0x87: > + sku_info->cpu_speedo_id = 3; > + break; > + > + default: > + pr_err("Tegra210B01: unknown SKU %#04x\n", sku); > + /* Using the default for the error case */ > + break; > + } > + } else if (sku_info->revision >= TEGRA_REVISION_A02) { > switch (sku) { > case 0x00: /* Engineering SKU */ > case 0x01: /* Engineering SKU */ > @@ -154,7 +172,7 @@ void __init tegra210_init_speedo_data(struct tegra_sku_info *sku_info) > speedo_revision = get_speedo_revision(); > pr_info("Speedo Revision %u\n", speedo_revision); > > - if (speedo_revision >= 3) { > + if (sku_info->revision == TEGRA_REVISION_B01 || speedo_revision >= 3) { > sku_info->cpu_speedo_value = cpu_speedo[0]; > sku_info->gpu_speedo_value = cpu_speedo[2]; > sku_info->soc_speedo_value = soc_speedo[0]; > I am guessing that this is derived/ported from some kernel that NVIDIA has released in the past. It would be nice to include a reference to whatever change was used to create this. Jon -- nvpublic ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH 2/2] soc/tegra: fuse: speedo-tegra210: Support revision B01 2026-07-21 9:46 ` Jon Hunter @ 2026-07-21 17:31 ` Aaron Kling 2026-07-22 12:44 ` Jon Hunter 0 siblings, 1 reply; 8+ messages in thread From: Aaron Kling @ 2026-07-21 17:31 UTC (permalink / raw) To: Jon Hunter; +Cc: Thierry Reding, linux-tegra, linux-kernel On Tue, Jul 21, 2026 at 4:46 AM Jon Hunter <jonathanh@nvidia.com> wrote: > > > On 18/07/2026 00:19, Aaron Kling via B4 Relay wrote: > > From: Aaron Kling <webgeek1234@gmail.com> > > > > Tegra210B01 has a separate set of skus and speedo tables > > > > Signed-off-by: Aaron Kling <webgeek1234@gmail.com> > > --- > > drivers/soc/tegra/fuse/speedo-tegra210.c | 22 ++++++++++++++++++++-- > > 1 file changed, 20 insertions(+), 2 deletions(-) > > > > diff --git a/drivers/soc/tegra/fuse/speedo-tegra210.c b/drivers/soc/tegra/fuse/speedo-tegra210.c > > index 06c2bcbee5734..699751f4bd0c0 100644 > > --- a/drivers/soc/tegra/fuse/speedo-tegra210.c > > +++ b/drivers/soc/tegra/fuse/speedo-tegra210.c > > @@ -65,7 +65,25 @@ static void __init rev_sku_to_speedo_ids(struct tegra_sku_info *sku_info, > > sku_info->gpu_speedo_id = 0; > > *threshold = THRESHOLD_INDEX_0; > > > > - if (sku_info->revision >= TEGRA_REVISION_A02) { > > + if (sku_info->revision >= TEGRA_REVISION_B01) { > > + sku_info->gpu_speedo_id = 1; > > + > > + switch (sku) { > > + case 0x00: /* Engineering SKU */ > > + case 0x01: /* Engineering SKU */ > > + case 0x83: > > + break; > > + > > + case 0x87: > > + sku_info->cpu_speedo_id = 3; > > + break; > > + > > + default: > > + pr_err("Tegra210B01: unknown SKU %#04x\n", sku); > > + /* Using the default for the error case */ > > + break; > > + } > > + } else if (sku_info->revision >= TEGRA_REVISION_A02) { > > switch (sku) { > > case 0x00: /* Engineering SKU */ > > case 0x01: /* Engineering SKU */ > > @@ -154,7 +172,7 @@ void __init tegra210_init_speedo_data(struct tegra_sku_info *sku_info) > > speedo_revision = get_speedo_revision(); > > pr_info("Speedo Revision %u\n", speedo_revision); > > > > - if (speedo_revision >= 3) { > > + if (sku_info->revision == TEGRA_REVISION_B01 || speedo_revision >= 3) { > > sku_info->cpu_speedo_value = cpu_speedo[0]; > > sku_info->gpu_speedo_value = cpu_speedo[2]; > > sku_info->soc_speedo_value = soc_speedo[0]; > > > > I am guessing that this is derived/ported from some kernel that NVIDIA > has released in the past. It would be nice to include a reference to > whatever change was used to create this. It is loosely based on [0], but restructured to not change nearly as many lines. How would you want this referenced? Something like a 'based on downstream 5.10' blurb in the commit message or a direct reference to the commit somehow? Aaron [0] https://gitlab.com/nvidia/nv-tegra/linux-5.10/-/commit/8555ef4988d3b39d91791794825c354b3c9377ba ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH 2/2] soc/tegra: fuse: speedo-tegra210: Support revision B01 2026-07-21 17:31 ` Aaron Kling @ 2026-07-22 12:44 ` Jon Hunter 0 siblings, 0 replies; 8+ messages in thread From: Jon Hunter @ 2026-07-22 12:44 UTC (permalink / raw) To: Aaron Kling; +Cc: Thierry Reding, linux-tegra, linux-kernel On 21/07/2026 18:31, Aaron Kling wrote: > On Tue, Jul 21, 2026 at 4:46 AM Jon Hunter <jonathanh@nvidia.com> wrote: >> >> >> On 18/07/2026 00:19, Aaron Kling via B4 Relay wrote: >>> From: Aaron Kling <webgeek1234@gmail.com> >>> >>> Tegra210B01 has a separate set of skus and speedo tables >>> >>> Signed-off-by: Aaron Kling <webgeek1234@gmail.com> >>> --- >>> drivers/soc/tegra/fuse/speedo-tegra210.c | 22 ++++++++++++++++++++-- >>> 1 file changed, 20 insertions(+), 2 deletions(-) >>> >>> diff --git a/drivers/soc/tegra/fuse/speedo-tegra210.c b/drivers/soc/tegra/fuse/speedo-tegra210.c >>> index 06c2bcbee5734..699751f4bd0c0 100644 >>> --- a/drivers/soc/tegra/fuse/speedo-tegra210.c >>> +++ b/drivers/soc/tegra/fuse/speedo-tegra210.c >>> @@ -65,7 +65,25 @@ static void __init rev_sku_to_speedo_ids(struct tegra_sku_info *sku_info, >>> sku_info->gpu_speedo_id = 0; >>> *threshold = THRESHOLD_INDEX_0; >>> >>> - if (sku_info->revision >= TEGRA_REVISION_A02) { >>> + if (sku_info->revision >= TEGRA_REVISION_B01) { >>> + sku_info->gpu_speedo_id = 1; >>> + >>> + switch (sku) { >>> + case 0x00: /* Engineering SKU */ >>> + case 0x01: /* Engineering SKU */ >>> + case 0x83: >>> + break; >>> + >>> + case 0x87: >>> + sku_info->cpu_speedo_id = 3; >>> + break; >>> + >>> + default: >>> + pr_err("Tegra210B01: unknown SKU %#04x\n", sku); >>> + /* Using the default for the error case */ >>> + break; >>> + } >>> + } else if (sku_info->revision >= TEGRA_REVISION_A02) { >>> switch (sku) { >>> case 0x00: /* Engineering SKU */ >>> case 0x01: /* Engineering SKU */ >>> @@ -154,7 +172,7 @@ void __init tegra210_init_speedo_data(struct tegra_sku_info *sku_info) >>> speedo_revision = get_speedo_revision(); >>> pr_info("Speedo Revision %u\n", speedo_revision); >>> >>> - if (speedo_revision >= 3) { >>> + if (sku_info->revision == TEGRA_REVISION_B01 || speedo_revision >= 3) { >>> sku_info->cpu_speedo_value = cpu_speedo[0]; >>> sku_info->gpu_speedo_value = cpu_speedo[2]; >>> sku_info->soc_speedo_value = soc_speedo[0]; >>> >> >> I am guessing that this is derived/ported from some kernel that NVIDIA >> has released in the past. It would be nice to include a reference to >> whatever change was used to create this. > > It is loosely based on [0], but restructured to not change nearly as > many lines. How would you want this referenced? Something like a > 'based on downstream 5.10' blurb in the commit message or a direct > reference to the commit somehow? Commit d93f8399053dcf117ff56a3029ff08c0e36f4b75 uses ... Based-on: https://lore.kernel.org/r/7703024f-8882-9eec-a122-599871728a89@gmail.com Based-on-patch-by: Heiner Kallweit <hkallweit1@gmail.com> So this would be fine. Jon -- nvpublic ^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2026-07-22 12:44 UTC | newest] Thread overview: 8+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2026-07-17 23:19 [PATCH 0/2] soc/tegra: fuse: Support Tegra210B01 Speedos Aaron Kling via B4 Relay 2026-07-17 23:19 ` [PATCH 1/2] soc/tegra: fuse: Support revision B01 Aaron Kling via B4 Relay 2026-07-21 7:37 ` Mikko Perttunen 2026-07-17 23:19 ` [PATCH 2/2] soc/tegra: fuse: speedo-tegra210: " Aaron Kling via B4 Relay 2026-07-21 7:43 ` Mikko Perttunen 2026-07-21 9:46 ` Jon Hunter 2026-07-21 17:31 ` Aaron Kling 2026-07-22 12:44 ` Jon Hunter
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox