On Wed, Mar 18, 2020 at 7:38 PM Alex Sierra wrote:
>
> [Why]
> nbio v7.4 size of ih doorbell range is 64 bit. This requires 2 DWords per
> register.
>
> [How]
> Change ih doorbell size from 2 to 4. This means two Dwords per ring.
> Current configuration uses two ih rings.
>
> Change-Id: Iae28c22dd6e650f56286bfa0d9e002a8562fa855
> Signed-off-by: Alex Sierra
Series is:
Acked-by: Alex Deucher
> ---
> drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
> b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
> index 149d386590df..263dbb1f92ee 100644
> --- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
> +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
> @@ -185,7 +185,7 @@ static void nbio_v7_4_ih_doorbell_range(struct
> amdgpu_device *adev,
>
> if (use_doorbell) {
> ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
> BIF_IH_DOORBELL_RANGE, OFFSET, doorbell_index);
> - ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
> BIF_IH_DOORBELL_RANGE, SIZE, 2);
> + ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
> BIF_IH_DOORBELL_RANGE, SIZE, 4);
> } else
> ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
> BIF_IH_DOORBELL_RANGE, SIZE, 0);
>
> --
> 2.17.1
>
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