diff options
| author | Jon Hunter <jonathanh@nvidia.com> | 2020-04-17 13:39:48 +0100 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2020-04-22 00:07:23 +0200 |
| commit | 379ac9eb1fe94cc40173b83fda1ee8d611a756e9 (patch) | |
| tree | 4148f1b14fb3e55af822fbef7e8ef225a26c1832 /drivers/soc/tegra/fuse/fuse.h | |
| parent | c78cf9956f19a7db7199310802ec514266653931 (diff) | |
soc/tegra: fuse: Add custom SoC attributes
Add a custom SoC attribute for Tegra to expose the HIDREV register
fields to userspace via the sysfs. This register provides additional
details about the type of device (eg, silicon, FPGA, etc) as well as
revision. Exposing this information is useful for identifying the
exact device revision and device type.
For Tegra devices up until Tegra186, the majorrev and minorrev fields of
the HIDREV register are used to determine the device revision and device
type. For Tegra194, the majorrev and minorrev fields only determine the
revision. Starting with Tegra194, there is an additional field,
pre_si_platform (which occupies bits 20-23), that now determines device
type. Therefore, for all Tegra devices, add a custom SoC attribute for
the majorrev and minorrev fields and for Tegra194 add an additional
attribute for the pre_si_platform field.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/soc/tegra/fuse/fuse.h')
| -rw-r--r-- | drivers/soc/tegra/fuse/fuse.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/soc/tegra/fuse/fuse.h b/drivers/soc/tegra/fuse/fuse.h index 94a059e577a1..9d4fc315a007 100644 --- a/drivers/soc/tegra/fuse/fuse.h +++ b/drivers/soc/tegra/fuse/fuse.h @@ -32,6 +32,8 @@ struct tegra_fuse_soc { const struct nvmem_cell_lookup *lookups; unsigned int num_lookups; + + const struct attribute_group *soc_attr_group; }; struct tegra_fuse { @@ -64,6 +66,11 @@ void tegra_init_apbmisc(void); bool __init tegra_fuse_read_spare(unsigned int spare); u32 __init tegra_fuse_read_early(unsigned int offset); +u8 tegra_get_major_rev(void); +u8 tegra_get_minor_rev(void); + +extern const struct attribute_group tegra_soc_attr_group; + #ifdef CONFIG_ARCH_TEGRA_2x_SOC void tegra20_init_speedo_data(struct tegra_sku_info *sku_info); #endif @@ -110,6 +117,7 @@ extern const struct tegra_fuse_soc tegra186_fuse_soc; #ifdef CONFIG_ARCH_TEGRA_194_SOC extern const struct tegra_fuse_soc tegra194_fuse_soc; +extern const struct attribute_group tegra194_soc_attr_group; #endif #endif |