From: "Navare, Manasi" <manasi.d.navare@intel.com>
To: "Nautiyal, Ankit K" <ankit.k.nautiyal@intel.com>
Cc: intel-gfx@lists.freedesktop.org
Subject: Re: [Intel-gfx] [PATCH] drm/i915/display: Fix shared dpll mismatch for bigjoiner slave
Date: Mon, 19 Jul 2021 11:58:40 -0700 [thread overview]
Message-ID: <20210719185840.GA30216@labuser-Z97X-UD5H> (raw)
In-Reply-To: <9fb23633-cbeb-b4c8-d548-95323c7a71b3@intel.com>
On Mon, Jul 19, 2021 at 11:47:51AM +0530, Nautiyal, Ankit K wrote:
> Patch looks good to me.
>
> Please find below some suggestions
>
> On 7/15/2021 4:04 AM, Manasi Navare wrote:
> >Currently when we do the HW state readout, we dont set the shared dpll to NULL
> >for the bigjoiner slave which should not have a DPLL assigned. So it has
> >some garbage while the HW state readout is NULL. So explicitly reset
> >the shared dpll for bigjoiner slave pipe.
> >
> >Bug: https://gitlab.freedesktop.org/drm/intel/-/issues/3465
> >Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> >Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
> >Tested-By: Swati Sharma <swati2.sharma@intel.com>
> checkpatch warning about tested-by tag.
> >Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
> >---
> > drivers/gpu/drm/i915/display/intel_display.c | 4 ++++
> > 1 file changed, 4 insertions(+)
> >
> >diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> >index 65ddb6ca16e6..c274bfb8e549 100644
> >--- a/drivers/gpu/drm/i915/display/intel_display.c
> >+++ b/drivers/gpu/drm/i915/display/intel_display.c
> >@@ -9006,6 +9006,10 @@ verify_crtc_state(struct intel_crtc *crtc,
> > if (!new_crtc_state->hw.active)
> > return;
> >+ if (new_crtc_state->bigjoiner_slave)
> >+ /* No PLLs set for slave */
> >+ pipe_config->shared_dpll = NULL;
> >+
>
> there is a check for bigjoiner_slave, couple of lines above this:
>
> if (new_crtc_state->bigjoiner_slave)
> master = new_crtc_state->bigjoiner_linked_crtc;
>
> Perhaps it will make sense to club the set shared_dpll to NULL, along with
> these lines.
Yup, thats where I was resetting in earlier patch but then it actually gets overridden in a function call
after this point so need to reset it after separately.
Manasi
>
> In any case:
>
> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
>
> > intel_pipe_config_sanity_check(dev_priv, pipe_config);
> > if (!intel_pipe_config_compare(new_crtc_state,
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next prev parent reply other threads:[~2021-07-19 18:48 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-14 22:34 [Intel-gfx] [PATCH] drm/i915/display: Fix shared dpll mismatch for bigjoiner slave Manasi Navare
2021-07-16 15:44 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm/i915/display: Fix shared dpll mismatch for bigjoiner slave (rev3) Patchwork
2021-07-16 16:13 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2021-07-16 20:26 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
2021-07-19 6:17 ` [Intel-gfx] [PATCH] drm/i915/display: Fix shared dpll mismatch for bigjoiner slave Nautiyal, Ankit K
2021-07-19 18:58 ` Navare, Manasi [this message]
2021-07-20 7:23 ` Nautiyal, Ankit K
2021-07-21 17:42 ` Navare, Manasi
2021-08-10 13:19 ` Jani Nikula
-- strict thread matches above, loose matches on Subject: below --
2021-06-23 19:04 Manasi Navare
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