RE: [v2 0/2] drm/i915/display: Implement Display Wa_16030862157

"Shankar, Uma" <[email protected]>
Newsgroups org.freedesktop.lists.intel-gfx,org.freedesktop.lists.intel-xe
Message-ID <DM4PR11MB63609EC5CDB9DD52AAC6E227F4C22@DM4PR11MB6360.namprd11.prod.outlook.com>

> -----Original Message-----
> From: Shankar, Uma <[email protected]>
> Sent: Wednesday, July 15, 2026 4:11 PM
> To: [email protected]; [email protected]
> Cc: Govindapillai, Vinod <[email protected]>; Kandpal, Suraj
> <[email protected]>; Shankar, Uma <[email protected]>
> Subject: [v2 0/2] drm/i915/display: Implement Display Wa_16030862157
> 
> Interpret 0xF populated-channel count as 16. For 16-channel configuration, BIOS
> programs 1111b. A programmed value of 1111b must be interpreted as 16
> channels for memory bandwidth calculations.
> This series implements the workaround in driver.

Pushed to drm-intel-next. Thanks for the reviews.

> Uma Shankar (2):
>   drm/i915/display: Add Wa_16030862157 to the display workaround list
>   drm/i915/dram: Interpret 0xF populated-channel count as 16
> 
>  drivers/gpu/drm/i915/display/intel_bw.c       | 20 ++++++++++++++++---
>  .../gpu/drm/i915/display/intel_display_wa.c   |  2 ++
>  .../gpu/drm/i915/display/intel_display_wa.h   |  1 +
>  drivers/gpu/drm/i915/display/intel_dram.c     | 12 +++++++++++
>  4 files changed, 32 insertions(+), 3 deletions(-)
> 
> --
> 2.50.1
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