[AMD Official Use Only - General]
> -----Original Message-----
> From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of
> Xiaojian Du
> Sent: Thursday, July 28, 2022 3:04 PM
> To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: Deucher, Alexander <Alexander.Deucher@xxxxxxx>; Huang, Tim
> <Tim.Huang@xxxxxxx>; Du, Xiaojian <Xiaojian.Du@xxxxxxx>; Zhang, Yifan
> <Yifan1.Zhang@xxxxxxx>
> Subject: [PATCH 1/5] drm/amdgpu: send msg to IMU for the front-door
> loading
>
> This patch will make SMU send msg to IMU for the front-door loading, it is
> required by some ASICs.
>
> Signed-off-by: Yifan Zhang <yifan1.zhang@xxxxxxx>
> Signed-off-by: Xiaojian Du <Xiaojian.Du@xxxxxxx>
> ---
> drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
> b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
> index 6d9b3c6af164..79c01fa4b875 100644
> --- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
> +++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
> @@ -1360,6 +1360,14 @@ static int smu_hw_init(void *handle)
> return ret;
> }
>
> + if (smu->ppt_funcs->set_gfx_power_up_by_imu) {
> + ret = smu->ppt_funcs->set_gfx_power_up_by_imu(smu);
> + if (ret) {
> + dev_err(adev->dev, "Failed to Enable gfx imu!\n");
> + return ret;
> + }
> + }
[Quan, Evan] Per my understandings, this should be needed by APU only. Can you move this under "smu->is_apu" control as other features below?
Evan
> +
> if (smu->is_apu) {
> smu_dpm_set_vcn_enable(smu, true);
> smu_dpm_set_jpeg_enable(smu, true);
> --
> 2.25.1
