From patchwork Fri Jun 21 15:53:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Vasut X-Patchwork-Id: 13707804 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 59B15C27C4F for ; Fri, 21 Jun 2024 15:54:56 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9AAA810F30B; Fri, 21 Jun 2024 15:54:55 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=denx.de header.i=@denx.de header.b="A7mHq8Qw"; dkim-atps=neutral Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4D60A10F30A for ; Fri, 21 Jun 2024 15:54:54 +0000 (UTC) Received: from tr.lan (ip-86-49-120-218.bb.vodafone.cz [86.49.120.218]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: marex@denx.de) by phobos.denx.de (Postfix) with ESMTPSA id 61DB7831A1; Fri, 21 Jun 2024 17:54:52 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=phobos-20191101; t=1718985293; bh=xHndJ9ER1I1CwqdtytlCmkZaVqKOVbGUobKWj+eJSpw=; h=From:To:Cc:Subject:Date:From; b=A7mHq8Qw02OFec9VrQkZVJqCeNKaYi9zcGy+JEL0V8n9NZBfMugZmnfwy4dzZ6rFJ Mq/qxPQN6q1LoKTEljM/6xUuoi/GncjMfRimxD2xh4xBYCYjSuo3T91t0YLEzO0xhz XJcvvEUr2keji1L8nwBBMQzJMR0OMLpCn+hTdGQsk3ed0LumPIN2AhEXcdv0kX/b0C nUXAMoYDiG4yhGqKXhQK7++pNmo2BrXX+GCktvDeKcFMAuDNszLsB8giNO9crjpWa2 yM18x6nGpYloDmV1qmaMlWD8kH6ODZckKHKj+IdfAJUQsBPiNaG4Tp2s6ACDm+lroR 66WHIntMlQbEA== From: Marek Vasut To: dri-devel@lists.freedesktop.org Cc: Marek Vasut , Andrzej Hajda , Conor Dooley , Daniel Vetter , David Airlie , Jernej Skrabec , Jonas Karlman , Krzysztof Kozlowski , Laurent Pinchart , Lucas Stach , Maarten Lankhorst , Maxime Ripard , Neil Armstrong , Rob Herring , Robert Foss , Thomas Zimmermann , devicetree@vger.kernel.org, kernel@dh-electronics.com Subject: [PATCH v2 1/2] dt-bindings: display: bridge: tc358867: Document default DP preemphasis Date: Fri, 21 Jun 2024 17:53:53 +0200 Message-ID: <20240621155430.92894-1-marex@denx.de> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Document default DP port preemphasis configurable via new DT property "toshiba,pre-emphasis". This is useful in case the DP link properties are known and starting link training from preemphasis setting of 0 dB is not useful. The preemphasis can be set separately for both DP lanes in range 0=0dB, 1=3.5dB, 2=6dB . Signed-off-by: Marek Vasut --- Cc: Andrzej Hajda Cc: Conor Dooley Cc: Daniel Vetter Cc: David Airlie Cc: Jernej Skrabec Cc: Jonas Karlman Cc: Krzysztof Kozlowski Cc: Laurent Pinchart Cc: Lucas Stach Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Neil Armstrong Cc: Rob Herring Cc: Robert Foss Cc: Thomas Zimmermann Cc: devicetree@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: kernel@dh-electronics.com --- V2: - Fix the type to u8 array - Fix the enum items to match what they represent --- .../display/bridge/toshiba,tc358767.yaml | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/Documentation/devicetree/bindings/display/bridge/toshiba,tc358767.yaml b/Documentation/devicetree/bindings/display/bridge/toshiba,tc358767.yaml index 2ad0cd6dd49e0..6287eb2b40908 100644 --- a/Documentation/devicetree/bindings/display/bridge/toshiba,tc358767.yaml +++ b/Documentation/devicetree/bindings/display/bridge/toshiba,tc358767.yaml @@ -98,6 +98,24 @@ properties: reference to a valid eDP panel input endpoint node. This port is optional, treated as DP panel if not defined + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + unevaluatedProperties: false + + properties: + toshiba,pre-emphasis: + description: + Display port output Pre-Emphasis settings for both ports. + $ref: /schemas/types.yaml#/definitions/uint8-array + minItems: 2 + maxItems: 2 + items: + enum: + - 0 # No pre-emphasis + - 1 # 3.5dB pre-emphasis + - 2 # 6dB pre-emphasis + oneOf: - required: - port@0