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1=======================2 dGPU firmware flashing3=======================4 5IFWI6----7Flashing the dGPU integrated firmware image (IFWI) is supported by GPUs that8use the PSP to orchestrate the update (Navi3x or newer GPUs).9For supported GPUs, `amdgpu` will export a series of sysfs files that can be10used 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/W20------------21On GPUs that support flashing an updated USB-C PD firmware image, the process22is 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 name28as long as it doesn't conflict with other existing binaries that are used by29`amdgpu`.30 31sysfs files32-----------33.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c34