From patchwork Thu Dec 12 12:17:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrej Picej X-Patchwork-Id: 13905126 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 2959BE77182 for ; Thu, 12 Dec 2024 12:17:49 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9482F10ED82; Thu, 12 Dec 2024 12:17:48 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=norik.com header.i=@norik.com header.b="lwCUMK04"; dkim-atps=neutral Received: from cpanel.siel.si (cpanel.siel.si [46.19.9.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id BB93210ED82 for ; Thu, 12 Dec 2024 12:17:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=norik.com; s=default; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=paT95758DuarnLt3uBrtdu0R1Vdl4/oHUgOFQlWqE94=; b=lwCUMK04j4oN4A0J1fWB00P+DB bOnk5RLF/cYZA/b8ag0tyumm5Nx6uSt4QsyNNAaVdyNzRjpYrDm0NdUGAp5Hy9VHebzTePoxW/JeS ktFxA4bD4iZ37MAekELzOyMeRUrqdywrxOEiPmrM5quSRHrrQnycVoksWeF81wrVXiSGm55rjtR/F Ea6pVBnRuW/WdDwXTt2oZgtEn+NjDlnbDa/ZYNZcTXg0yDe2RDx0s+Z2Iert9sBOW1eGGyRZlWJ03 gNTGtanAYBFLOCeNKBj7WTBJOiIX8PXbWfB50KK3vf1Epmp9FMSUuRsaWZ9Zu2widP1IHakKcTuMS BATVWgfg==; Received: from 89-212-21-243.static.t-2.net ([89.212.21.243]:38802 helo=and-HP-Z4..) by cpanel.siel.si with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96.2) (envelope-from ) id 1tLi8W-00A8t4-1e; Thu, 12 Dec 2024 13:17:44 +0100 From: Andrej Picej To: andrzej.hajda@intel.com, neil.armstrong@linaro.org, rfoss@kernel.org, Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@gmail.com, airlied@gmail.com, simona@ffwll.ch, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, marex@denx.de Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, upstream@lists.phytec.de Subject: [PATCH v6 1/3] dt-bindings: drm/bridge: ti-sn65dsi83: Add properties for ti, lvds-vod-swing Date: Thu, 12 Dec 2024 13:17:10 +0100 Message-Id: <20241212121712.214639-2-andrej.picej@norik.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241212121712.214639-1-andrej.picej@norik.com> References: <20241212121712.214639-1-andrej.picej@norik.com> MIME-Version: 1.0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - cpanel.siel.si X-AntiAbuse: Original Domain - lists.freedesktop.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - norik.com X-Get-Message-Sender-Via: cpanel.siel.si: authenticated_id: andrej.picej@norik.com X-Authenticated-Sender: cpanel.siel.si: andrej.picej@norik.com X-Source: X-Source-Args: X-Source-Dir: 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" Add properties which can be used to specify LVDS differential output voltage. Since this also depends on near-end signal termination also include property which sets this. LVDS differential output voltage is specified with an array (min, max), which should match the one from connected device. Signed-off-by: Andrej Picej Reviewed-by: Krzysztof Kozlowski --- Changes in v6: - no change Changes in v5: - added Krzysztof's reviewed-by tag Changes in v4: - removed "additionalProperties: true" from the patch as it is not needed Changes in v3: - no change Changes in v2: - move LVDS port schema to a $defs and reference it from there - properties are now defined in microvolts/ohms - use 1 property for data-lane and 1 for clock-lane LVDS voltage swing - add 1 property which sets LVDS near-end termination - since major change was done change the authorship to myself --- .../bindings/display/bridge/ti,sn65dsi83.yaml | 34 +++++++++++++++++-- 1 file changed, 32 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi83.yaml b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi83.yaml index 48a97bb3e2e0..bad6f5c81b06 100644 --- a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi83.yaml +++ b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi83.yaml @@ -80,12 +80,12 @@ properties: - const: 4 port@2: - $ref: /schemas/graph.yaml#/properties/port description: Video port for LVDS Channel-A output (panel or bridge). + $ref: '#/$defs/lvds-port' port@3: - $ref: /schemas/graph.yaml#/properties/port description: Video port for LVDS Channel-B output (panel or bridge). + $ref: '#/$defs/lvds-port' required: - port@0 @@ -96,6 +96,36 @@ required: - reg - ports +$defs: + lvds-port: + $ref: /schemas/graph.yaml#/$defs/port-base + unevaluatedProperties: false + + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + unevaluatedProperties: false + + properties: + ti,lvds-termination-ohms: + description: The value of near end differential termination in ohms. + enum: [100, 200] + default: 200 + + ti,lvds-vod-swing-clock-microvolt: + description: LVDS diferential output voltage for clock + lanes in microvolts. + $ref: /schemas/types.yaml#/definitions/uint32-array + minItems: 2 + maxItems: 2 + + ti,lvds-vod-swing-data-microvolt: + description: LVDS diferential output voltage for data + lanes in microvolts. + $ref: /schemas/types.yaml#/definitions/uint32-array + minItems: 2 + maxItems: 2 + allOf: - if: properties: