On Thu, 20 Jul 2023, "Lisovskiy, Stanislav"
wrote:
> On Wed, Jul 19, 2023 at 01:48:33PM +0300, Stanislav Lisovskiy wrote:
>> BSpec clearly instructs us to use plane scale factor when calculating
>> relative data rate to be used when allocating DDB blocks for each plane.
>> For some reason we use
On Wed, Jul 19, 2023 at 01:48:33PM +0300, Stanislav Lisovskiy wrote:
> BSpec clearly instructs us to use plane scale factor when calculating
> relative data rate to be used when allocating DDB blocks for each plane.
> For some reason we use scale factor for data_rate calculation, which is
> used fo
> -Original Message-
> From: Lisovskiy, Stanislav
> Sent: Wednesday, July 19, 2023 4:19 PM
> To: intel-gfx@lists.freedesktop.org
> Cc: Lisovskiy, Stanislav ; Saarinen, Jani
> ; Garg, Nemesa
> Subject: [PATCH] drm/i915: Start using plane scale factor for relative data
> rate
>
> BSpec
BSpec clearly instructs us to use plane scale factor when calculating
relative data rate to be used when allocating DDB blocks for each plane.
For some reason we use scale factor for data_rate calculation, which is
used for BW calculations, however we are not using it for DDB calculations.
So lets
BSpec 68907 clearly instructs us to use plane scale factor when calculating
relative data rate to be used when allocating DDB blocks for each plane.
For some reason we use scale factor for data_rate calculation, which is
used for BW calculations, however we are not using it for DDB calculations.
S
