1 =======================
2 dGPU firmware flashing
3 =======================
4
5 IFWI
6 ----
7 Flashing the dGPU integrated firmware image (I
8 use the PSP to orchestrate the update (Navi3x
9 For supported GPUs, `amdgpu` will export a ser
10 used for the flash process.
11
12 The IFWI flash process is:
13
14 1. Ensure the IFWI image is intended for the d
15 2. "Write" the IFWI image to the sysfs file `p
16 3. "Read" from the `psp_vbflash` sysfs file to
17 4. Poll the `psp_vbflash_status` sysfs file to
18
19 USB-C PD F/W
20 ------------
21 On GPUs that support flashing an updated USB-C
22 is done using the `usbc_pd_fw` sysfs file.
23
24 * Reading the file will provide the current fi
25 * Writing the name of a firmware payload store
26
27 The firmware payload stored in `/lib/firmware/
28 as long as it doesn't conflict with other exis
29 `amdgpu`.
30
31 sysfs files
32 -----------
33 .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amd
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