[PATCH] drm/amdgpu/smu7: fix CAC setting on TOPAZ

[Quan, Evan]

[AMD Public Use]

Reviewed-by: Evan Quan <evan.quan at amd.com>

> -----Original Message-----
> From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Alex
> Deucher
> Sent: Wednesday, April 7, 2021 9:39 PM
> To: amd-gfx at lists.freedesktop.org
> Cc: Deucher, Alexander <Alexander.Deucher at amd.com>
> Subject: [PATCH] drm/amdgpu/smu7: fix CAC setting on TOPAZ
> 
> We need to enable MC CAC for mclk switching to work.
> 
> Fixes: d765129a719f ("drm/amd/pm: correct sclk/mclk dpm enablement")
> Bug:
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitla
> b.freedesktop.org%2Fdrm%2Famd%2F-
> %2Fissues%2F1561&data=04%7C01%7Cevan.quan%40amd.com%7C00a
> 251035e6f4c16d63608d8f9ca9928%7C3dd8961fe4884e608e11a82d994e183d%
> 7C0%7C0%7C637533995857826102%7CUnknown%7CTWFpbGZsb3d8eyJWIjoi
> MC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C100
> 0&sdata=gMvcwYRiSFSyYhzXm5OGBxdRGIiPC4%2BkVBmN17dJR8w%3D
> &reserved=0
> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
> ---
>  drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
> b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
> index 301b6769f007..0541bfc81c1b 100644
> --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
> +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
> @@ -1224,7 +1224,8 @@ static int smu7_enable_sclk_mclk_dpm(struct
> pp_hwmgr *hwmgr)
>  		    (hwmgr->chip_id == CHIP_POLARIS10) ||
>  		    (hwmgr->chip_id == CHIP_POLARIS11) ||
>  		    (hwmgr->chip_id == CHIP_POLARIS12) ||
> -		    (hwmgr->chip_id == CHIP_TONGA))
> +		    (hwmgr->chip_id == CHIP_TONGA) ||
> +		    (hwmgr->chip_id == CHIP_TOPAZ))
>  			PHM_WRITE_FIELD(hwmgr->device,
> MC_SEQ_CNTL_3, CAC_EN, 0x1);
> 
> 
> --
> 2.30.2
> 
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