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| author | Mario Limonciello <mario.limonciello@amd.com> | 2023-06-26 10:04:07 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-07-07 13:51:47 -0400 |
| commit | 649663af73f59ca6f7dc9021b93c087877e4d8e3 (patch) | |
| tree | 3a75874ff0bb3151e26de3ea461ad8d3a9bc4c37 /drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | |
| parent | 98d19a6c49b5d61d75cf53c7001541f157683bb8 (diff) | |
| download | linux-649663af73f59ca6f7dc9021b93c087877e4d8e3.tar.gz linux-649663af73f59ca6f7dc9021b93c087877e4d8e3.tar.bz2 linux-649663af73f59ca6f7dc9021b93c087877e4d8e3.zip | |
drm/amd: Add documentation for how to flash a dGPU
The flashing process for dGPUs uses sysfs files in a
non-obvious way, so document it for users.
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c index a22485eedd81..7c20994be0c0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c @@ -3570,6 +3570,11 @@ void psp_copy_fw(struct psp_context *psp, uint8_t *start_addr, uint32_t bin_size drm_dev_exit(idx); } +/** + * DOC: usbc_pd_fw + * Reading from this file will retrieve the USB-C PD firmware version. Writing to + * this file will trigger the update process. + */ static DEVICE_ATTR(usbc_pd_fw, 0644, psp_usbc_pd_fw_sysfs_read, psp_usbc_pd_fw_sysfs_write); @@ -3663,6 +3668,11 @@ rel_buf: return 0; } +/** + * DOC: psp_vbflash + * Writing to this file will stage an IFWI for update. Reading from this file + * will trigger the update process. + */ static struct bin_attribute psp_vbflash_bin_attr = { .attr = {.name = "psp_vbflash", .mode = 0660}, .size = 0, @@ -3670,6 +3680,12 @@ static struct bin_attribute psp_vbflash_bin_attr = { .read = amdgpu_psp_vbflash_read, }; +/** + * DOC: psp_vbflash_status + * The status of the flash process. + * 0: IFWI flash not complete. + * 1: IFWI flash complete. + */ static ssize_t amdgpu_psp_vbflash_status(struct device *dev, struct device_attribute *attr, char *buf) |