From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 15CA1ECC for ; Mon, 12 Jun 2023 10:36:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 90F6AC433EF; Mon, 12 Jun 2023 10:36:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1686566173; bh=eEMDT4gqV3r30hmY/IrIGV4L+N31mCMAqkx/Uze+LCs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BQPLTeDIvSYaHHQqOUryW3q0nGyxMmnP3wEQo5YAuEoFbn4nkp7u0+I0n0un2c2O7 b5h3fSeoMOr0hPsBAl0ziGFrkhy6cIw6j+4pZkcoFgFJrlmCoY4ILxMXN0hLvkBqdm WVIxS2FF67OH1f082yIPv1X6nOgLHexLq4W6JbBc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, =?UTF-8?q?Jouni=20H=C3=B6gander?= , Luca Coelho , Joonas Lahtinen , Sasha Levin Subject: [PATCH 5.15 23/91] drm/i915: Use 18 fast wake AUX sync len Date: Mon, 12 Jun 2023 12:26:12 +0200 Message-ID: <20230612101703.060282118@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230612101702.085813286@linuxfoundation.org> References: <20230612101702.085813286@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Jouni Högander [ Upstream commit 2d6f2f79e06571d41eb1223abebe9097511c9544 ] HW default for wake sync pulses is 18. 10 precharge and 8 preamble. There is no reason to change this especially as it is causing problems with certain eDP panels. v3: Change "Fixes:" commit v2: Remove "fast wake" repeat from subject Signed-off-by: Jouni Högander Fixes: e1c71f8f9180 ("drm/i915: Fix fast wake AUX sync len") Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8475 Reviewed-by: Luca Coelho Link: https://patchwork.freedesktop.org/patch/msgid/20230530101649.2549949-1-jouni.hogander@intel.com (cherry picked from commit b29a20f7c4995a059ed764ce42389857426397c7) Signed-off-by: Joonas Lahtinen Signed-off-by: Sasha Levin --- drivers/gpu/drm/i915/display/intel_dp_aux.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux.c b/drivers/gpu/drm/i915/display/intel_dp_aux.c index f0485521e58ad..d507a20822db1 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_aux.c +++ b/drivers/gpu/drm/i915/display/intel_dp_aux.c @@ -129,7 +129,7 @@ static int intel_dp_aux_sync_len(void) static int intel_dp_aux_fw_sync_len(void) { - int precharge = 16; /* 10-16 */ + int precharge = 10; /* 10-16 */ int preamble = 8; return precharge + preamble; -- 2.39.2