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Date:   Thu, 15 Sep 2022 00:46:01 +0000
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Message-ID: <20220915004601.320198-1-pceballos@google.com>
Subject: [PATCH] drm/i915/display/lspcon: Increase LSPCON mode settle timeout
From:   Pablo Ceballos <pceballos@google.com>
To:     David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>
Cc:     Jani Nikula <jani.nikula@linux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@intel.com>,
        Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>,
        "=?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?=" 
        <ville.syrjala@linux.intel.com>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        Javier Martinez Canillas <javierm@redhat.com>,
        Sam Ravnborg <sam@ravnborg.org>,
        Pablo Ceballos <pceballos@google.com>,
        Maxime Ripard <maxime@cerno.tech>,
        intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
        linux-kernel@vger.kernel.org
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Precedence: bulk

On some devices the Parade PS175 takes more than 400ms to settle in PCON
mode.

Signed-off-by: Pablo Ceballos <pceballos@google.com>
---
 drivers/gpu/drm/i915/display/intel_lspcon.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c b/drivers/gpu/drm/i915/display/intel_lspcon.c
index 15d59de8810e..b4cbade13ee5 100644
--- a/drivers/gpu/drm/i915/display/intel_lspcon.c
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
@@ -166,7 +166,7 @@ static enum drm_lspcon_mode lspcon_wait_mode(struct intel_lspcon *lspcon,
 	drm_dbg_kms(&i915->drm, "Waiting for LSPCON mode %s to settle\n",
 		    lspcon_mode_name(mode));
 
-	wait_for((current_mode = lspcon_get_current_mode(lspcon)) == mode, 400);
+	wait_for((current_mode = lspcon_get_current_mode(lspcon)) == mode, 800);
 	if (current_mode != mode)
 		drm_err(&i915->drm, "LSPCON mode hasn't settled\n");
 
-- 
2.37.2.789.g6183377224-goog