From patchwork Mon Jan 15 13:20:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Raphael Gallais-Pou X-Patchwork-Id: 13519628 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 C823DC3DA79 for ; Mon, 15 Jan 2024 13:21:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=vCYJgB3XKvEKvwe+fgUzB80boQBRXJs6n0QVo6mjz3w=; b=ui8obTCRiKzBKi 4XtYer/f7leIy5TqIVYxiurgMRDxJRRQROtXtryDJfA+ESUwMDUi7NN6Z/i5QZsiq29pWJp4MK5as HGi7phNPLc29N5hz1ZVXPpBHLuBXY9a1DqofmbJdXtgOVO9bFne8vx5ZGHDjy3Nl4yKLktDZsye5g WptX34UNIrW2cEHGCTp/l547vBpZSg4zllttqWZtvuwpsrt9DHvCDveEA38qJIyPMV9C5me2eozlr p0p/S9drhrTn8Dc7qkzPzhuqcg5UWQc7LaCXhXFAccDaEu02udeWNYKGoCYtO/5uyyZbf8sXZlEv0 gTflYR1iC+ZU6PpnILtg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rPMta-0093J2-0w; Mon, 15 Jan 2024 13:20:54 +0000 Received: from mx08-00178001.pphosted.com ([91.207.212.93] helo=mx07-00178001.pphosted.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1rPMtV-0093GK-2U for linux-arm-kernel@lists.infradead.org; Mon, 15 Jan 2024 13:20:51 +0000 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 40FDGOsn031019; Mon, 15 Jan 2024 14:20:25 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= selector1; bh=M9u8psSbfiMyxIaaZp+okYX6lH1MFdnEeutd9kjlEnw=; b=6W WzFpstXKuHA2Ye1GsnEccjtHYaVLYMSjPvTrvVpU5+pFk/3RXKm1wseeHVAVeOpQ 2Z9l2QmVEpZ0o7Li/9hFuUoUk7zPq3syrsmC/nRIeOINl9ho61XRW/ooY4t6UQV+ m27FztcD7fI6CknCg8Bdcqsyt7Nd8YT4LM7Jc2T/OB5WxO2vxL3Tc4s7LP5VHvob FQamraYwWbZA9SGy5Os++7c30wXNOws7PSWD2r0gFcQSHz1WdcFLWeaiJJ/TiTLM iwZz4mSYbwBIyNJk28qJtCiow8a0oWTKxLqbwrsPtOoLHLENslGvEcNDCjcqvxJM Xw4WdYPpydtaFDjWRaGw== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3vkmbh0mu1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 15 Jan 2024 14:20:25 +0100 (CET) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id DA712100057; Mon, 15 Jan 2024 14:20:22 +0100 (CET) Received: from Webmail-eu.st.com (shfdag1node2.st.com [10.75.129.70]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id CEC652831A3; Mon, 15 Jan 2024 14:20:22 +0100 (CET) Received: from localhost (10.129.178.37) by SHFDAG1NODE2.st.com (10.75.129.70) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Mon, 15 Jan 2024 14:20:22 +0100 From: Raphael Gallais-Pou To: Yannick Fertre , Raphael Gallais-Pou , Philippe Cornu , David Airlie , Daniel Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue , Philipp Zabel CC: , , , , Subject: [PATCH v3 1/6] dt-bindings: display: add dt-bindings for STM32 LVDS device Date: Mon, 15 Jan 2024 14:20:04 +0100 Message-ID: <20240115132009.101718-2-raphael.gallais-pou@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240115132009.101718-1-raphael.gallais-pou@foss.st.com> References: <20240115132009.101718-1-raphael.gallais-pou@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.129.178.37] X-ClientProxiedBy: EQNCAS1NODE3.st.com (10.75.129.80) To SHFDAG1NODE2.st.com (10.75.129.70) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-05_08,2024-01-05_01,2023-05-22_02 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240115_052050_101896_E7FA02E7 X-CRM114-Status: GOOD ( 19.09 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add "st,stm32mp25-lvds" compatible. Signed-off-by: Raphael Gallais-Pou --- Depends on: "dt-bindings: stm32: add clocks and reset binding for stm32mp25 platform" by Gabriel Fernandez Changes in v3: - Clarify commit dependency - Fix includes in the example - Fix YAML - Add "clock-cells" description - s/regroups/is composed of/ - Changed compatible to show SoC specificity Changes in v2: - Switch compatible and clock-cells related areas - Remove faulty #include in the example. - Add entry in MAINTAINERS --- .../bindings/display/st,stm32-lvds.yaml | 119 ++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 120 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/st,stm32-lvds.yaml diff --git a/Documentation/devicetree/bindings/display/st,stm32-lvds.yaml b/Documentation/devicetree/bindings/display/st,stm32-lvds.yaml new file mode 100644 index 000000000000..a6383858cd2c --- /dev/null +++ b/Documentation/devicetree/bindings/display/st,stm32-lvds.yaml @@ -0,0 +1,119 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/st,stm32-lvds.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: STMicroelectronics STM32 LVDS Display Interface Transmitter + +maintainers: + - Raphael Gallais-Pou + - Yannick Fertre + +description: | + The STMicroelectronics STM32 LVDS Display Interface Transmitter handles the + LVDS protocol: it maps the pixels received from the upstream Pixel-DMA (LTDC) + onto the LVDS PHY. + + It is composed of three sub blocks: + - LVDS host: handles the LVDS protocol (FPD / OpenLDI) and maps its input + pixels onto the data lanes of the PHY + - LVDS PHY: parallelize the data and drives the LVDS data lanes + - LVDS wrapper: handles top-level settings + + The LVDS controller driver supports the following high-level features: + - FDP-Link-I and OpenLDI (v0.95) protocols + - Single-Link or Dual-Link operation + - Single-Display or Double-Display (with the same content duplicated on both) + - Flexible Bit-Mapping, including JEIDA and VESA + - RGB888 or RGB666 output + - Synchronous design, with one input pixel per clock cycle + +properties: + compatible: + const: st,stm32mp25-lvds + + "#clock-cells": + const: 0 + description: + Provides the internal LVDS PHY clock to the framework. + + reg: + maxItems: 1 + + clocks: + items: + - description: APB peripheral clock + - description: Reference clock for the internal PLL + + clock-names: + items: + - const: pclk + - const: ref + + resets: + maxItems: 1 + + ports: + $ref: /schemas/graph.yaml#/properties/ports + + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + description: + LVDS input port node, connected to the LTDC RGB output port. + + port@1: + $ref: /schemas/graph.yaml#/properties/port + description: + LVDS output port node, connected to a panel or bridge input port. + + required: + - port@0 + - port@1 + +required: + - compatible + - "#clock-cells" + - reg + - clocks + - clock-names + - resets + - ports + +additionalProperties: false + +examples: + - | + #include + #include + + lvds: lvds@48060000 { + compatible = "st,stm32-lvds"; + reg = <0x48060000 0x2000>; + #clock-cells = <0>; + clocks = <&rcc CK_BUS_LVDS>, <&rcc CK_KER_LVDSPHY>; + clock-names = "pclk", "ref"; + resets = <&rcc LVDS_R>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + lvds_in: endpoint { + remote-endpoint = <<dc_ep1_out>; + }; + }; + + port@1 { + reg = <1>; + lvds_out0: endpoint { + remote-endpoint = <&lvds_panel_in>; + }; + }; + }; + }; + +... diff --git a/MAINTAINERS b/MAINTAINERS index 9d959a6881f7..0b6ec5347195 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7193,6 +7193,7 @@ L: dri-devel@lists.freedesktop.org S: Maintained T: git git://anongit.freedesktop.org/drm/drm-misc F: Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml +F: Documentation/devicetree/bindings/display/st,stm32-lvds.yaml F: drivers/gpu/drm/stm DRM DRIVERS FOR TI KEYSTONE