[Intel-gfx] [PATCH] drm/i915/cdclk: Remove divider field from tables
Matt Roper
matthew.d.roper at intel.com
Wed Dec 20 21:13:31 UTC 2023
On Wed, Dec 13, 2023 at 04:07:26PM -0800, Matt Roper wrote:
> On Mon, Dec 04, 2023 at 11:13:52AM -0300, Gustavo Sousa wrote:
> > Quoting Gustavo Sousa (2023-12-04 11:04:20-03:00)
> > >Quoting Matt Roper (2023-12-01 20:07:48-03:00)
> > >>On Tue, Nov 28, 2023 at 11:51:43AM +0200, Ville Syrjälä wrote:
> > >>> On Tue, Nov 28, 2023 at 10:43:36AM +0200, Ville Syrjälä wrote:
> > >>> > On Mon, Nov 27, 2023 at 08:21:46AM -0800, Matt Roper wrote:
> > >>> > > On Fri, Nov 24, 2023 at 05:55:23PM -0300, Gustavo Sousa wrote:
> > >>> > > > The cdclk tables were introduced with commit 736da8112fee ("drm/i915:
> > >>> > > > Use literal representation of cdclk tables"). It has been almost 4 years
> > >>> > > > and the divider field was not really used yet. Let's remove it.
> > >>> > >
> > >>> > > I think we need to go the other way and actually start using it instead
> > >>> > > of (incorrectly) trying to re-derive it from cdclk->vco. The logic the
> > >>> > > driver is using today doesn't account for the potential use of
> > >>> > > squashing, which means we program the wrong divider value into CDCLK_CTL
> > >>> > > in some cases. I pointed that out during the LNL code reviews a couple
> > >>> > > months ago, and I believe Stan is working on fixing that.
> > >>> >
> > >>> > The code should be correct as is, but it does assume that the cd2x
> > >>> > divider is 2 when squashing is used. If that no longer holds then we
> > >>> > have to change something.
> > >>>
> > >>> Something like this should be sufficient to eliminate that
> > >>> assumption.
> > >>>
> > >>> diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
> > >>> index 8bb6bab7c8cd..58567d42e725 100644
> > >>> --- a/drivers/gpu/drm/i915/display/intel_cdclk.c
> > >>> +++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
> > >>> @@ -1897,10 +1897,7 @@ static void _bxt_set_cdclk(struct drm_i915_private *dev_priv,
> > >>>
> > >>> waveform = cdclk_squash_waveform(dev_priv, cdclk);
> > >>>
> > >>> - if (waveform)
> > >>> - clock = vco / 2;
> >
> > Ah, one thing I did not mention in my previous message is that, this
> > assignment here means that we were always assuming that the divisor was
> > always 1:
> >
> > x' = vco / 2
> >
> > , meaning that bxt_cdclk_cd2x_div_sel() would do:
> >
> > y' = vco / x' / 2 = 1
> >
>
> I finally got back to looking at this. With Ville's cleanups it's a lot
> clearer and I agree we should be safe to drop the dividers from the
> table.
>
> Reviewed-by: Matt Roper <matthew.d.roper at intel.com>
>
> Sorry for the delay getting back to this.
And applied to drm-intel-next. Thanks for the patch.
Matt
>
>
> Matt
>
> > --
> > Gustavo Sousa
> >
> > >>> - else
> > >>> - clock = cdclk;
> > >>> + clock = DIV_ROUND_CLOSEST(cdclk * 16, cdclk_squash_divider(waveform));
> > >>>
> > >>
> > >>I haven't had time to come back and revisit this (or check your new
> > >>series yet), but when I was reviewing the cdclk stuff a couple months
> > >>ago, my concern was around bxt_cdclk_cd2x_div_sel() which is deriving
> > >>the CD2X divider from the vco and cdclk value. On a platform like DG2,
> > >>we use squashing instead of changes to PLL ratio to hit different cdclk
> > >>values, so the calculation there doesn't seem valid anymore. Am I
> > >>overlooking something?
> > >
> > >I looked at Ville's patches and they seem correct to me - althought I'm
> > >not that experienced and might be missing something as well... Here goes
> > >my rationale:
> > >
> > >Looking at how cdclk works with our hardware, I would say that the
> > >cdclock is defined by:
> > >
> > > cdclk = vco / div / sq_div / 2
> > >
> > >, with: vco being the output of the CD2X PLL; "div", the CD2X divider;
> > >"sq_div", the divider that is derived from the squash wave (16 / "sqash
> > >wave 1's count"); and 2, the final division that is done at the end.
> > >
> > >The DIV_ROUND_CLOSEST() operation suggested above is equivalent to
> > >doing:
> > >
> > > x = cdclk * sq_div = vco / div / 2
> > >
> > >Meaning that x is the "unsquashed cdclk". From this point, what
> > >bxt_cdclk_cd2x_div_sel() is doing is:
> > >
> > > y = vco / x / 2
> > >
> > >(the last "2" divisor comes from the switch-case statement).
> > >
> > >That resolves to:
> > >
> > > y = vco / (vco / div / 2) / 2 = div
> > >
> > >--
> > >Gustavo Sousa
> > >
> > >>
> > >>
> > >>Matt
> > >>
> > >>> if (HAS_CDCLK_SQUASH(dev_priv))
> > >>> dg2_cdclk_squash_program(dev_priv, waveform);
> > >>>
> > >>> >
> > >>> > >
> > >>> > > I wonder if the misprogramming we're doing today is what requires the
> > >>> > > "HACK" at the bottom of intel_crtc_compute_min_cdclk for DG2?
> > >>> > >
> > >>> > >
> > >>> > > Matt
> > >>> > >
> > >>> > > >
> > >>> > > > Cc: Matt Roper <matthew.d.roper at intel.com>
> > >>> > > > Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
> > >>> > > > Signed-off-by: Gustavo Sousa <gustavo.sousa at intel.com>
> > >>> > > > ---
> > >>> > > > drivers/gpu/drm/i915/display/intel_cdclk.c | 269 ++++++++++-----------
> > >>> > > > 1 file changed, 134 insertions(+), 135 deletions(-)
> > >>> > > >
> > >>> > > > diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
> > >>> > > > index b93d1ad7936d..7f85a216ff5c 100644
> > >>> > > > --- a/drivers/gpu/drm/i915/display/intel_cdclk.c
> > >>> > > > +++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
> > >>> > > > @@ -1227,183 +1227,182 @@ struct intel_cdclk_vals {
> > >>> > > > u32 cdclk;
> > >>> > > > u16 refclk;
> > >>> > > > u16 waveform;
> > >>> > > > - u8 divider; /* CD2X divider * 2 */
> > >>> > > > u8 ratio;
> > >>> > > > };
> > >>> > > >
> > >>> > > > static const struct intel_cdclk_vals bxt_cdclk_table[] = {
> > >>> > > > - { .refclk = 19200, .cdclk = 144000, .divider = 8, .ratio = 60 },
> > >>> > > > - { .refclk = 19200, .cdclk = 288000, .divider = 4, .ratio = 60 },
> > >>> > > > - { .refclk = 19200, .cdclk = 384000, .divider = 3, .ratio = 60 },
> > >>> > > > - { .refclk = 19200, .cdclk = 576000, .divider = 2, .ratio = 60 },
> > >>> > > > - { .refclk = 19200, .cdclk = 624000, .divider = 2, .ratio = 65 },
> > >>> > > > + { .refclk = 19200, .cdclk = 144000, .ratio = 60 },
> > >>> > > > + { .refclk = 19200, .cdclk = 288000, .ratio = 60 },
> > >>> > > > + { .refclk = 19200, .cdclk = 384000, .ratio = 60 },
> > >>> > > > + { .refclk = 19200, .cdclk = 576000, .ratio = 60 },
> > >>> > > > + { .refclk = 19200, .cdclk = 624000, .ratio = 65 },
> > >>> > > > {}
> > >>> > > > };
> > >>> > > >
> > >>> > > > static const struct intel_cdclk_vals glk_cdclk_table[] = {
> > >>> > > > - { .refclk = 19200, .cdclk = 79200, .divider = 8, .ratio = 33 },
> > >>> > > > - { .refclk = 19200, .cdclk = 158400, .divider = 4, .ratio = 33 },
> > >>> > > > - { .refclk = 19200, .cdclk = 316800, .divider = 2, .ratio = 33 },
> > >>> > > > + { .refclk = 19200, .cdclk = 79200, .ratio = 33 },
> > >>> > > > + { .refclk = 19200, .cdclk = 158400, .ratio = 33 },
> > >>> > > > + { .refclk = 19200, .cdclk = 316800, .ratio = 33 },
> > >>> > > > {}
> > >>> > > > };
> > >>> > > >
> > >>> > > > static const struct intel_cdclk_vals icl_cdclk_table[] = {
> > >>> > > > - { .refclk = 19200, .cdclk = 172800, .divider = 2, .ratio = 18 },
> > >>> > > > - { .refclk = 19200, .cdclk = 192000, .divider = 2, .ratio = 20 },
> > >>> > > > - { .refclk = 19200, .cdclk = 307200, .divider = 2, .ratio = 32 },
> > >>> > > > - { .refclk = 19200, .cdclk = 326400, .divider = 4, .ratio = 68 },
> > >>> > > > - { .refclk = 19200, .cdclk = 556800, .divider = 2, .ratio = 58 },
> > >>> > > > - { .refclk = 19200, .cdclk = 652800, .divider = 2, .ratio = 68 },
> > >>> > > > -
> > >>> > > > - { .refclk = 24000, .cdclk = 180000, .divider = 2, .ratio = 15 },
> > >>> > > > - { .refclk = 24000, .cdclk = 192000, .divider = 2, .ratio = 16 },
> > >>> > > > - { .refclk = 24000, .cdclk = 312000, .divider = 2, .ratio = 26 },
> > >>> > > > - { .refclk = 24000, .cdclk = 324000, .divider = 4, .ratio = 54 },
> > >>> > > > - { .refclk = 24000, .cdclk = 552000, .divider = 2, .ratio = 46 },
> > >>> > > > - { .refclk = 24000, .cdclk = 648000, .divider = 2, .ratio = 54 },
> > >>> > > > -
> > >>> > > > - { .refclk = 38400, .cdclk = 172800, .divider = 2, .ratio = 9 },
> > >>> > > > - { .refclk = 38400, .cdclk = 192000, .divider = 2, .ratio = 10 },
> > >>> > > > - { .refclk = 38400, .cdclk = 307200, .divider = 2, .ratio = 16 },
> > >>> > > > - { .refclk = 38400, .cdclk = 326400, .divider = 4, .ratio = 34 },
> > >>> > > > - { .refclk = 38400, .cdclk = 556800, .divider = 2, .ratio = 29 },
> > >>> > > > - { .refclk = 38400, .cdclk = 652800, .divider = 2, .ratio = 34 },
> > >>> > > > + { .refclk = 19200, .cdclk = 172800, .ratio = 18 },
> > >>> > > > + { .refclk = 19200, .cdclk = 192000, .ratio = 20 },
> > >>> > > > + { .refclk = 19200, .cdclk = 307200, .ratio = 32 },
> > >>> > > > + { .refclk = 19200, .cdclk = 326400, .ratio = 68 },
> > >>> > > > + { .refclk = 19200, .cdclk = 556800, .ratio = 58 },
> > >>> > > > + { .refclk = 19200, .cdclk = 652800, .ratio = 68 },
> > >>> > > > +
> > >>> > > > + { .refclk = 24000, .cdclk = 180000, .ratio = 15 },
> > >>> > > > + { .refclk = 24000, .cdclk = 192000, .ratio = 16 },
> > >>> > > > + { .refclk = 24000, .cdclk = 312000, .ratio = 26 },
> > >>> > > > + { .refclk = 24000, .cdclk = 324000, .ratio = 54 },
> > >>> > > > + { .refclk = 24000, .cdclk = 552000, .ratio = 46 },
> > >>> > > > + { .refclk = 24000, .cdclk = 648000, .ratio = 54 },
> > >>> > > > +
> > >>> > > > + { .refclk = 38400, .cdclk = 172800, .ratio = 9 },
> > >>> > > > + { .refclk = 38400, .cdclk = 192000, .ratio = 10 },
> > >>> > > > + { .refclk = 38400, .cdclk = 307200, .ratio = 16 },
> > >>> > > > + { .refclk = 38400, .cdclk = 326400, .ratio = 34 },
> > >>> > > > + { .refclk = 38400, .cdclk = 556800, .ratio = 29 },
> > >>> > > > + { .refclk = 38400, .cdclk = 652800, .ratio = 34 },
> > >>> > > > {}
> > >>> > > > };
> > >>> > > >
> > >>> > > > static const struct intel_cdclk_vals rkl_cdclk_table[] = {
> > >>> > > > - { .refclk = 19200, .cdclk = 172800, .divider = 4, .ratio = 36 },
> > >>> > > > - { .refclk = 19200, .cdclk = 192000, .divider = 4, .ratio = 40 },
> > >>> > > > - { .refclk = 19200, .cdclk = 307200, .divider = 4, .ratio = 64 },
> > >>> > > > - { .refclk = 19200, .cdclk = 326400, .divider = 8, .ratio = 136 },
> > >>> > > > - { .refclk = 19200, .cdclk = 556800, .divider = 4, .ratio = 116 },
> > >>> > > > - { .refclk = 19200, .cdclk = 652800, .divider = 4, .ratio = 136 },
> > >>> > > > -
> > >>> > > > - { .refclk = 24000, .cdclk = 180000, .divider = 4, .ratio = 30 },
> > >>> > > > - { .refclk = 24000, .cdclk = 192000, .divider = 4, .ratio = 32 },
> > >>> > > > - { .refclk = 24000, .cdclk = 312000, .divider = 4, .ratio = 52 },
> > >>> > > > - { .refclk = 24000, .cdclk = 324000, .divider = 8, .ratio = 108 },
> > >>> > > > - { .refclk = 24000, .cdclk = 552000, .divider = 4, .ratio = 92 },
> > >>> > > > - { .refclk = 24000, .cdclk = 648000, .divider = 4, .ratio = 108 },
> > >>> > > > -
> > >>> > > > - { .refclk = 38400, .cdclk = 172800, .divider = 4, .ratio = 18 },
> > >>> > > > - { .refclk = 38400, .cdclk = 192000, .divider = 4, .ratio = 20 },
> > >>> > > > - { .refclk = 38400, .cdclk = 307200, .divider = 4, .ratio = 32 },
> > >>> > > > - { .refclk = 38400, .cdclk = 326400, .divider = 8, .ratio = 68 },
> > >>> > > > - { .refclk = 38400, .cdclk = 556800, .divider = 4, .ratio = 58 },
> > >>> > > > - { .refclk = 38400, .cdclk = 652800, .divider = 4, .ratio = 68 },
> > >>> > > > + { .refclk = 19200, .cdclk = 172800, .ratio = 36 },
> > >>> > > > + { .refclk = 19200, .cdclk = 192000, .ratio = 40 },
> > >>> > > > + { .refclk = 19200, .cdclk = 307200, .ratio = 64 },
> > >>> > > > + { .refclk = 19200, .cdclk = 326400, .ratio = 136 },
> > >>> > > > + { .refclk = 19200, .cdclk = 556800, .ratio = 116 },
> > >>> > > > + { .refclk = 19200, .cdclk = 652800, .ratio = 136 },
> > >>> > > > +
> > >>> > > > + { .refclk = 24000, .cdclk = 180000, .ratio = 30 },
> > >>> > > > + { .refclk = 24000, .cdclk = 192000, .ratio = 32 },
> > >>> > > > + { .refclk = 24000, .cdclk = 312000, .ratio = 52 },
> > >>> > > > + { .refclk = 24000, .cdclk = 324000, .ratio = 108 },
> > >>> > > > + { .refclk = 24000, .cdclk = 552000, .ratio = 92 },
> > >>> > > > + { .refclk = 24000, .cdclk = 648000, .ratio = 108 },
> > >>> > > > +
> > >>> > > > + { .refclk = 38400, .cdclk = 172800, .ratio = 18 },
> > >>> > > > + { .refclk = 38400, .cdclk = 192000, .ratio = 20 },
> > >>> > > > + { .refclk = 38400, .cdclk = 307200, .ratio = 32 },
> > >>> > > > + { .refclk = 38400, .cdclk = 326400, .ratio = 68 },
> > >>> > > > + { .refclk = 38400, .cdclk = 556800, .ratio = 58 },
> > >>> > > > + { .refclk = 38400, .cdclk = 652800, .ratio = 68 },
> > >>> > > > {}
> > >>> > > > };
> > >>> > > >
> > >>> > > > static const struct intel_cdclk_vals adlp_a_step_cdclk_table[] = {
> > >>> > > > - { .refclk = 19200, .cdclk = 307200, .divider = 2, .ratio = 32 },
> > >>> > > > - { .refclk = 19200, .cdclk = 556800, .divider = 2, .ratio = 58 },
> > >>> > > > - { .refclk = 19200, .cdclk = 652800, .divider = 2, .ratio = 68 },
> > >>> > > > + { .refclk = 19200, .cdclk = 307200, .ratio = 32 },
> > >>> > > > + { .refclk = 19200, .cdclk = 556800, .ratio = 58 },
> > >>> > > > + { .refclk = 19200, .cdclk = 652800, .ratio = 68 },
> > >>> > > >
> > >>> > > > - { .refclk = 24000, .cdclk = 312000, .divider = 2, .ratio = 26 },
> > >>> > > > - { .refclk = 24000, .cdclk = 552000, .divider = 2, .ratio = 46 },
> > >>> > > > - { .refclk = 24400, .cdclk = 648000, .divider = 2, .ratio = 54 },
> > >>> > > > + { .refclk = 24000, .cdclk = 312000, .ratio = 26 },
> > >>> > > > + { .refclk = 24000, .cdclk = 552000, .ratio = 46 },
> > >>> > > > + { .refclk = 24400, .cdclk = 648000, .ratio = 54 },
> > >>> > > >
> > >>> > > > - { .refclk = 38400, .cdclk = 307200, .divider = 2, .ratio = 16 },
> > >>> > > > - { .refclk = 38400, .cdclk = 556800, .divider = 2, .ratio = 29 },
> > >>> > > > - { .refclk = 38400, .cdclk = 652800, .divider = 2, .ratio = 34 },
> > >>> > > > + { .refclk = 38400, .cdclk = 307200, .ratio = 16 },
> > >>> > > > + { .refclk = 38400, .cdclk = 556800, .ratio = 29 },
> > >>> > > > + { .refclk = 38400, .cdclk = 652800, .ratio = 34 },
> > >>> > > > {}
> > >>> > > > };
> > >>> > > >
> > >>> > > > static const struct intel_cdclk_vals adlp_cdclk_table[] = {
> > >>> > > > - { .refclk = 19200, .cdclk = 172800, .divider = 3, .ratio = 27 },
> > >>> > > > - { .refclk = 19200, .cdclk = 192000, .divider = 2, .ratio = 20 },
> > >>> > > > - { .refclk = 19200, .cdclk = 307200, .divider = 2, .ratio = 32 },
> > >>> > > > - { .refclk = 19200, .cdclk = 556800, .divider = 2, .ratio = 58 },
> > >>> > > > - { .refclk = 19200, .cdclk = 652800, .divider = 2, .ratio = 68 },
> > >>> > > > -
> > >>> > > > - { .refclk = 24000, .cdclk = 176000, .divider = 3, .ratio = 22 },
> > >>> > > > - { .refclk = 24000, .cdclk = 192000, .divider = 2, .ratio = 16 },
> > >>> > > > - { .refclk = 24000, .cdclk = 312000, .divider = 2, .ratio = 26 },
> > >>> > > > - { .refclk = 24000, .cdclk = 552000, .divider = 2, .ratio = 46 },
> > >>> > > > - { .refclk = 24000, .cdclk = 648000, .divider = 2, .ratio = 54 },
> > >>> > > > -
> > >>> > > > - { .refclk = 38400, .cdclk = 179200, .divider = 3, .ratio = 14 },
> > >>> > > > - { .refclk = 38400, .cdclk = 192000, .divider = 2, .ratio = 10 },
> > >>> > > > - { .refclk = 38400, .cdclk = 307200, .divider = 2, .ratio = 16 },
> > >>> > > > - { .refclk = 38400, .cdclk = 556800, .divider = 2, .ratio = 29 },
> > >>> > > > - { .refclk = 38400, .cdclk = 652800, .divider = 2, .ratio = 34 },
> > >>> > > > + { .refclk = 19200, .cdclk = 172800, .ratio = 27 },
> > >>> > > > + { .refclk = 19200, .cdclk = 192000, .ratio = 20 },
> > >>> > > > + { .refclk = 19200, .cdclk = 307200, .ratio = 32 },
> > >>> > > > + { .refclk = 19200, .cdclk = 556800, .ratio = 58 },
> > >>> > > > + { .refclk = 19200, .cdclk = 652800, .ratio = 68 },
> > >>> > > > +
> > >>> > > > + { .refclk = 24000, .cdclk = 176000, .ratio = 22 },
> > >>> > > > + { .refclk = 24000, .cdclk = 192000, .ratio = 16 },
> > >>> > > > + { .refclk = 24000, .cdclk = 312000, .ratio = 26 },
> > >>> > > > + { .refclk = 24000, .cdclk = 552000, .ratio = 46 },
> > >>> > > > + { .refclk = 24000, .cdclk = 648000, .ratio = 54 },
> > >>> > > > +
> > >>> > > > + { .refclk = 38400, .cdclk = 179200, .ratio = 14 },
> > >>> > > > + { .refclk = 38400, .cdclk = 192000, .ratio = 10 },
> > >>> > > > + { .refclk = 38400, .cdclk = 307200, .ratio = 16 },
> > >>> > > > + { .refclk = 38400, .cdclk = 556800, .ratio = 29 },
> > >>> > > > + { .refclk = 38400, .cdclk = 652800, .ratio = 34 },
> > >>> > > > {}
> > >>> > > > };
> > >>> > > >
> > >>> > > > static const struct intel_cdclk_vals rplu_cdclk_table[] = {
> > >>> > > > - { .refclk = 19200, .cdclk = 172800, .divider = 3, .ratio = 27 },
> > >>> > > > - { .refclk = 19200, .cdclk = 192000, .divider = 2, .ratio = 20 },
> > >>> > > > - { .refclk = 19200, .cdclk = 307200, .divider = 2, .ratio = 32 },
> > >>> > > > - { .refclk = 19200, .cdclk = 480000, .divider = 2, .ratio = 50 },
> > >>> > > > - { .refclk = 19200, .cdclk = 556800, .divider = 2, .ratio = 58 },
> > >>> > > > - { .refclk = 19200, .cdclk = 652800, .divider = 2, .ratio = 68 },
> > >>> > > > -
> > >>> > > > - { .refclk = 24000, .cdclk = 176000, .divider = 3, .ratio = 22 },
> > >>> > > > - { .refclk = 24000, .cdclk = 192000, .divider = 2, .ratio = 16 },
> > >>> > > > - { .refclk = 24000, .cdclk = 312000, .divider = 2, .ratio = 26 },
> > >>> > > > - { .refclk = 24000, .cdclk = 480000, .divider = 2, .ratio = 40 },
> > >>> > > > - { .refclk = 24000, .cdclk = 552000, .divider = 2, .ratio = 46 },
> > >>> > > > - { .refclk = 24000, .cdclk = 648000, .divider = 2, .ratio = 54 },
> > >>> > > > -
> > >>> > > > - { .refclk = 38400, .cdclk = 179200, .divider = 3, .ratio = 14 },
> > >>> > > > - { .refclk = 38400, .cdclk = 192000, .divider = 2, .ratio = 10 },
> > >>> > > > - { .refclk = 38400, .cdclk = 307200, .divider = 2, .ratio = 16 },
> > >>> > > > - { .refclk = 38400, .cdclk = 480000, .divider = 2, .ratio = 25 },
> > >>> > > > - { .refclk = 38400, .cdclk = 556800, .divider = 2, .ratio = 29 },
> > >>> > > > - { .refclk = 38400, .cdclk = 652800, .divider = 2, .ratio = 34 },
> > >>> > > > + { .refclk = 19200, .cdclk = 172800, .ratio = 27 },
> > >>> > > > + { .refclk = 19200, .cdclk = 192000, .ratio = 20 },
> > >>> > > > + { .refclk = 19200, .cdclk = 307200, .ratio = 32 },
> > >>> > > > + { .refclk = 19200, .cdclk = 480000, .ratio = 50 },
> > >>> > > > + { .refclk = 19200, .cdclk = 556800, .ratio = 58 },
> > >>> > > > + { .refclk = 19200, .cdclk = 652800, .ratio = 68 },
> > >>> > > > +
> > >>> > > > + { .refclk = 24000, .cdclk = 176000, .ratio = 22 },
> > >>> > > > + { .refclk = 24000, .cdclk = 192000, .ratio = 16 },
> > >>> > > > + { .refclk = 24000, .cdclk = 312000, .ratio = 26 },
> > >>> > > > + { .refclk = 24000, .cdclk = 480000, .ratio = 40 },
> > >>> > > > + { .refclk = 24000, .cdclk = 552000, .ratio = 46 },
> > >>> > > > + { .refclk = 24000, .cdclk = 648000, .ratio = 54 },
> > >>> > > > +
> > >>> > > > + { .refclk = 38400, .cdclk = 179200, .ratio = 14 },
> > >>> > > > + { .refclk = 38400, .cdclk = 192000, .ratio = 10 },
> > >>> > > > + { .refclk = 38400, .cdclk = 307200, .ratio = 16 },
> > >>> > > > + { .refclk = 38400, .cdclk = 480000, .ratio = 25 },
> > >>> > > > + { .refclk = 38400, .cdclk = 556800, .ratio = 29 },
> > >>> > > > + { .refclk = 38400, .cdclk = 652800, .ratio = 34 },
> > >>> > > > {}
> > >>> > > > };
> > >>> > > >
> > >>> > > > static const struct intel_cdclk_vals dg2_cdclk_table[] = {
> > >>> > > > - { .refclk = 38400, .cdclk = 163200, .divider = 2, .ratio = 34, .waveform = 0x8888 },
> > >>> > > > - { .refclk = 38400, .cdclk = 204000, .divider = 2, .ratio = 34, .waveform = 0x9248 },
> > >>> > > > - { .refclk = 38400, .cdclk = 244800, .divider = 2, .ratio = 34, .waveform = 0xa4a4 },
> > >>> > > > - { .refclk = 38400, .cdclk = 285600, .divider = 2, .ratio = 34, .waveform = 0xa54a },
> > >>> > > > - { .refclk = 38400, .cdclk = 326400, .divider = 2, .ratio = 34, .waveform = 0xaaaa },
> > >>> > > > - { .refclk = 38400, .cdclk = 367200, .divider = 2, .ratio = 34, .waveform = 0xad5a },
> > >>> > > > - { .refclk = 38400, .cdclk = 408000, .divider = 2, .ratio = 34, .waveform = 0xb6b6 },
> > >>> > > > - { .refclk = 38400, .cdclk = 448800, .divider = 2, .ratio = 34, .waveform = 0xdbb6 },
> > >>> > > > - { .refclk = 38400, .cdclk = 489600, .divider = 2, .ratio = 34, .waveform = 0xeeee },
> > >>> > > > - { .refclk = 38400, .cdclk = 530400, .divider = 2, .ratio = 34, .waveform = 0xf7de },
> > >>> > > > - { .refclk = 38400, .cdclk = 571200, .divider = 2, .ratio = 34, .waveform = 0xfefe },
> > >>> > > > - { .refclk = 38400, .cdclk = 612000, .divider = 2, .ratio = 34, .waveform = 0xfffe },
> > >>> > > > - { .refclk = 38400, .cdclk = 652800, .divider = 2, .ratio = 34, .waveform = 0xffff },
> > >>> > > > + { .refclk = 38400, .cdclk = 163200, .ratio = 34, .waveform = 0x8888 },
> > >>> > > > + { .refclk = 38400, .cdclk = 204000, .ratio = 34, .waveform = 0x9248 },
> > >>> > > > + { .refclk = 38400, .cdclk = 244800, .ratio = 34, .waveform = 0xa4a4 },
> > >>> > > > + { .refclk = 38400, .cdclk = 285600, .ratio = 34, .waveform = 0xa54a },
> > >>> > > > + { .refclk = 38400, .cdclk = 326400, .ratio = 34, .waveform = 0xaaaa },
> > >>> > > > + { .refclk = 38400, .cdclk = 367200, .ratio = 34, .waveform = 0xad5a },
> > >>> > > > + { .refclk = 38400, .cdclk = 408000, .ratio = 34, .waveform = 0xb6b6 },
> > >>> > > > + { .refclk = 38400, .cdclk = 448800, .ratio = 34, .waveform = 0xdbb6 },
> > >>> > > > + { .refclk = 38400, .cdclk = 489600, .ratio = 34, .waveform = 0xeeee },
> > >>> > > > + { .refclk = 38400, .cdclk = 530400, .ratio = 34, .waveform = 0xf7de },
> > >>> > > > + { .refclk = 38400, .cdclk = 571200, .ratio = 34, .waveform = 0xfefe },
> > >>> > > > + { .refclk = 38400, .cdclk = 612000, .ratio = 34, .waveform = 0xfffe },
> > >>> > > > + { .refclk = 38400, .cdclk = 652800, .ratio = 34, .waveform = 0xffff },
> > >>> > > > {}
> > >>> > > > };
> > >>> > > >
> > >>> > > > static const struct intel_cdclk_vals mtl_cdclk_table[] = {
> > >>> > > > - { .refclk = 38400, .cdclk = 172800, .divider = 2, .ratio = 16, .waveform = 0xad5a },
> > >>> > > > - { .refclk = 38400, .cdclk = 192000, .divider = 2, .ratio = 16, .waveform = 0xb6b6 },
> > >>> > > > - { .refclk = 38400, .cdclk = 307200, .divider = 2, .ratio = 16, .waveform = 0x0000 },
> > >>> > > > - { .refclk = 38400, .cdclk = 480000, .divider = 2, .ratio = 25, .waveform = 0x0000 },
> > >>> > > > - { .refclk = 38400, .cdclk = 556800, .divider = 2, .ratio = 29, .waveform = 0x0000 },
> > >>> > > > - { .refclk = 38400, .cdclk = 652800, .divider = 2, .ratio = 34, .waveform = 0x0000 },
> > >>> > > > + { .refclk = 38400, .cdclk = 172800, .ratio = 16, .waveform = 0xad5a },
> > >>> > > > + { .refclk = 38400, .cdclk = 192000, .ratio = 16, .waveform = 0xb6b6 },
> > >>> > > > + { .refclk = 38400, .cdclk = 307200, .ratio = 16, .waveform = 0x0000 },
> > >>> > > > + { .refclk = 38400, .cdclk = 480000, .ratio = 25, .waveform = 0x0000 },
> > >>> > > > + { .refclk = 38400, .cdclk = 556800, .ratio = 29, .waveform = 0x0000 },
> > >>> > > > + { .refclk = 38400, .cdclk = 652800, .ratio = 34, .waveform = 0x0000 },
> > >>> > > > {}
> > >>> > > > };
> > >>> > > >
> > >>> > > > static const struct intel_cdclk_vals lnl_cdclk_table[] = {
> > >>> > > > - { .refclk = 38400, .cdclk = 153600, .divider = 2, .ratio = 16, .waveform = 0xaaaa },
> > >>> > > > - { .refclk = 38400, .cdclk = 172800, .divider = 2, .ratio = 16, .waveform = 0xad5a },
> > >>> > > > - { .refclk = 38400, .cdclk = 192000, .divider = 2, .ratio = 16, .waveform = 0xb6b6 },
> > >>> > > > - { .refclk = 38400, .cdclk = 211200, .divider = 2, .ratio = 16, .waveform = 0xdbb6 },
> > >>> > > > - { .refclk = 38400, .cdclk = 230400, .divider = 2, .ratio = 16, .waveform = 0xeeee },
> > >>> > > > - { .refclk = 38400, .cdclk = 249600, .divider = 2, .ratio = 16, .waveform = 0xf7de },
> > >>> > > > - { .refclk = 38400, .cdclk = 268800, .divider = 2, .ratio = 16, .waveform = 0xfefe },
> > >>> > > > - { .refclk = 38400, .cdclk = 288000, .divider = 2, .ratio = 16, .waveform = 0xfffe },
> > >>> > > > - { .refclk = 38400, .cdclk = 307200, .divider = 2, .ratio = 16, .waveform = 0xffff },
> > >>> > > > - { .refclk = 38400, .cdclk = 330000, .divider = 2, .ratio = 25, .waveform = 0xdbb6 },
> > >>> > > > - { .refclk = 38400, .cdclk = 360000, .divider = 2, .ratio = 25, .waveform = 0xeeee },
> > >>> > > > - { .refclk = 38400, .cdclk = 390000, .divider = 2, .ratio = 25, .waveform = 0xf7de },
> > >>> > > > - { .refclk = 38400, .cdclk = 420000, .divider = 2, .ratio = 25, .waveform = 0xfefe },
> > >>> > > > - { .refclk = 38400, .cdclk = 450000, .divider = 2, .ratio = 25, .waveform = 0xfffe },
> > >>> > > > - { .refclk = 38400, .cdclk = 480000, .divider = 2, .ratio = 25, .waveform = 0xffff },
> > >>> > > > - { .refclk = 38400, .cdclk = 487200, .divider = 2, .ratio = 29, .waveform = 0xfefe },
> > >>> > > > - { .refclk = 38400, .cdclk = 522000, .divider = 2, .ratio = 29, .waveform = 0xfffe },
> > >>> > > > - { .refclk = 38400, .cdclk = 556800, .divider = 2, .ratio = 29, .waveform = 0xffff },
> > >>> > > > - { .refclk = 38400, .cdclk = 571200, .divider = 2, .ratio = 34, .waveform = 0xfefe },
> > >>> > > > - { .refclk = 38400, .cdclk = 612000, .divider = 2, .ratio = 34, .waveform = 0xfffe },
> > >>> > > > - { .refclk = 38400, .cdclk = 652800, .divider = 2, .ratio = 34, .waveform = 0xffff },
> > >>> > > > + { .refclk = 38400, .cdclk = 153600, .ratio = 16, .waveform = 0xaaaa },
> > >>> > > > + { .refclk = 38400, .cdclk = 172800, .ratio = 16, .waveform = 0xad5a },
> > >>> > > > + { .refclk = 38400, .cdclk = 192000, .ratio = 16, .waveform = 0xb6b6 },
> > >>> > > > + { .refclk = 38400, .cdclk = 211200, .ratio = 16, .waveform = 0xdbb6 },
> > >>> > > > + { .refclk = 38400, .cdclk = 230400, .ratio = 16, .waveform = 0xeeee },
> > >>> > > > + { .refclk = 38400, .cdclk = 249600, .ratio = 16, .waveform = 0xf7de },
> > >>> > > > + { .refclk = 38400, .cdclk = 268800, .ratio = 16, .waveform = 0xfefe },
> > >>> > > > + { .refclk = 38400, .cdclk = 288000, .ratio = 16, .waveform = 0xfffe },
> > >>> > > > + { .refclk = 38400, .cdclk = 307200, .ratio = 16, .waveform = 0xffff },
> > >>> > > > + { .refclk = 38400, .cdclk = 330000, .ratio = 25, .waveform = 0xdbb6 },
> > >>> > > > + { .refclk = 38400, .cdclk = 360000, .ratio = 25, .waveform = 0xeeee },
> > >>> > > > + { .refclk = 38400, .cdclk = 390000, .ratio = 25, .waveform = 0xf7de },
> > >>> > > > + { .refclk = 38400, .cdclk = 420000, .ratio = 25, .waveform = 0xfefe },
> > >>> > > > + { .refclk = 38400, .cdclk = 450000, .ratio = 25, .waveform = 0xfffe },
> > >>> > > > + { .refclk = 38400, .cdclk = 480000, .ratio = 25, .waveform = 0xffff },
> > >>> > > > + { .refclk = 38400, .cdclk = 487200, .ratio = 29, .waveform = 0xfefe },
> > >>> > > > + { .refclk = 38400, .cdclk = 522000, .ratio = 29, .waveform = 0xfffe },
> > >>> > > > + { .refclk = 38400, .cdclk = 556800, .ratio = 29, .waveform = 0xffff },
> > >>> > > > + { .refclk = 38400, .cdclk = 571200, .ratio = 34, .waveform = 0xfefe },
> > >>> > > > + { .refclk = 38400, .cdclk = 612000, .ratio = 34, .waveform = 0xfffe },
> > >>> > > > + { .refclk = 38400, .cdclk = 652800, .ratio = 34, .waveform = 0xffff },
> > >>> > > > {}
> > >>> > > > };
> > >>> > > >
> > >>> > > > --
> > >>> > > > 2.42.1
> > >>> > > >
> > >>> > >
> > >>> > > --
> > >>> > > Matt Roper
> > >>> > > Graphics Software Engineer
> > >>> > > Linux GPU Platform Enablement
> > >>> > > Intel Corporation
> > >>> >
> > >>> > --
> > >>> > Ville Syrjälä
> > >>> > Intel
> > >>>
> > >>> --
> > >>> Ville Syrjälä
> > >>> Intel
> > >>
> > >>--
> > >>Matt Roper
> > >>Graphics Software Engineer
> > >>Linux GPU Platform Enablement
> > >>Intel Corporation
>
> --
> Matt Roper
> Graphics Software Engineer
> Linux GPU Platform Enablement
> Intel Corporation
--
Matt Roper
Graphics Software Engineer
Linux GPU Platform Enablement
Intel Corporation
More information about the Intel-gfx
mailing list