1======================= 2 dGPU firmware flashing 3======================= 4 5IFWI 6---- 7Flashing the dGPU integrated firmware image (IFWI) is supported by GPUs that 8use the PSP to orchestrate the update (Navi3x or newer GPUs). 9For supported GPUs, `amdgpu` will export a series of sysfs files that can be 10used for the flash process. 11 12The IFWI flash process is: 13 141. Ensure the IFWI image is intended for the dGPU on the system. 152. "Write" the IFWI image to the sysfs file `psp_vbflash`. This will stage the IFWI in memory. 163. "Read" from the `psp_vbflash` sysfs file to initiate the flash process. 174. Poll the `psp_vbflash_status` sysfs file to determine when the flash process completes. 18 19USB-C PD F/W 20------------ 21On GPUs that support flashing an updated USB-C PD firmware image, the process 22is done using the `usbc_pd_fw` sysfs file. 23 24* Reading the file will provide the current firmware version. 25* Writing the name of a firmware payload stored in `/lib/firmware/amdgpu` to the sysfs file will initiate the flash process. 26 27The firmware payload stored in `/lib/firmware/amdgpu` can be named any name 28as long as it doesn't conflict with other existing binaries that are used by 29`amdgpu`. 30 31sysfs files 32----------- 33.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c 34