From patchwork Tue Jan 16 11:37:58 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dharma Balasubiramani X-Patchwork-Id: 13520728 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 9AC86C47077 for ; Tue, 16 Jan 2024 11:39:56 +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=NBeJrPQCWVOl6W1ETgTzESIaE4x8SzoWawSK5MguMdw=; b=GCYg9uN+rD1pnu UuykeKSMoLCLDfKoWoLCAv86ZdI6XViyjBM/Mo6HEzwaFzo6mY4TmNnvOEZxpavtkHtpFOzQgSlQ/ YLYg6isvC9DbY1kF9b1SmYGNyE7i3zloUBkBbpMmgbuxZCyFsv2Ss2GPgARHu0m43EfXhqMIBWS7N CFEb9rWDtbqIubeiftqK2i2liSwpL2MLIlksgD0J3tvLrftF9FDdp3TbHbgpiF2GHAjgYsM+tAVb3 PImulFTH9ed53iVtsiVN/zwRnChxH+t4jnLY5h3GtLUxzcDQcde/q6YvQ6dbKYOwH7IRZWMNlgHPL h0S9rsCrRHFDNobFbkog==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rPhmv-00BxXV-1u; Tue, 16 Jan 2024 11:39:25 +0000 Received: from esa.microchip.iphmx.com ([68.232.153.233]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1rPhmr-00BxW4-2z for linux-arm-kernel@lists.infradead.org; Tue, 16 Jan 2024 11:39:23 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1705405162; x=1736941162; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=F049DA0zYoCg3AHntkr9QbFbh+gCxVuUZu3XbwhuI7Q=; b=VjpXUHqZsLFTwZOnNy6O26g4MKdU34EoI68DfIO1C6nNqkjkvUTEzH53 tW+/sRfRIEnvwkpYpz6Ilz1aWYbK1MKv4GtF2thpOD+ezqWdt+O4VW62T JN8ic5MFYskD4QAXTYSzJ9F6aBMWEJbDemSrk5nwqmoH/Su6GB/+I1Ve+ MrIzAk35JquJROIM5tIbpZQJ52L3IEfYrIoyO4+SGggnS445ETE1korY1 xUAiw3jyHDrbuZADMNHhA26AuYJg0Wynn6YuBASOUi1vAz+MW2kX5DY21 rvx75FTvJE82kw2rmlO7vDTPtK4f6OW2Pmnm+04SBKnR3xkWXi5kSje77 g==; X-CSE-ConnectionGUID: m9+TCx76QtaEOtm0pEMV+w== X-CSE-MsgGUID: QDaawgEuT+Gvc4nhuwwnDQ== X-IronPort-AV: E=Sophos;i="6.05,199,1701154800"; d="scan'208";a="245533630" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa5.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 16 Jan 2024 04:39:20 -0700 Received: from chn-vm-ex01.mchp-main.com (10.10.85.143) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Tue, 16 Jan 2024 04:38:39 -0700 Received: from che-lt-i70843lx.amer.actel.com (10.10.85.11) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server id 15.1.2507.35 via Frontend Transport; Tue, 16 Jan 2024 04:38:26 -0700 From: Dharma Balasubiramani To: , , , , , , , , , , , , , , , , , , , , , CC: , Dharma Balasubiramani Subject: [PATCH v2 1/3] dt-bindings: display: convert Atmel's HLCDC to DT schema Date: Tue, 16 Jan 2024 17:07:58 +0530 Message-ID: <20240116113800.82529-2-dharma.b@microchip.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240116113800.82529-1-dharma.b@microchip.com> References: <20240116113800.82529-1-dharma.b@microchip.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240116_033921_972526_B22A6BE9 X-CRM114-Status: GOOD ( 17.76 ) 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 Convert the existing DT binding to DT schema of the Atmel's HLCDC display controller. Signed-off-by: Dharma Balasubiramani --- changelog v1 -> v2 - Remove the explicit copyrights. - Modify filename like compatible. - Modify title (drop words like binding/driver). - Modify description actually describing the hardware and not the driver. - Remove pinctrl properties which aren't required. - Ref endpoint and not endpoint-base. - Drop redundant info about bus-width description and add ref to video-interfaces. - Move 'additionalProperties' after 'Required'. - Drop parent node and it's other sub-device node which are not related here. - Add compatible to example 2 and add comments that bus-width is the diff between two examples. --- .../atmel/atmel,hlcdc-display-controller.yaml | 110 ++++++++++++++++++ .../bindings/display/atmel/hlcdc-dc.txt | 75 ------------ 2 files changed, 110 insertions(+), 75 deletions(-) create mode 100644 Documentation/devicetree/bindings/display/atmel/atmel,hlcdc-display-controller.yaml delete mode 100644 Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt diff --git a/Documentation/devicetree/bindings/display/atmel/atmel,hlcdc-display-controller.yaml b/Documentation/devicetree/bindings/display/atmel/atmel,hlcdc-display-controller.yaml new file mode 100644 index 000000000000..f022c294cfbc --- /dev/null +++ b/Documentation/devicetree/bindings/display/atmel/atmel,hlcdc-display-controller.yaml @@ -0,0 +1,110 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/atmel/atmel,hlcdc-display-controller.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Atmel's High LCD Controller (HLCDC) + +maintainers: + - Nicolas Ferre + - Alexandre Belloni + - Claudiu Beznea + +description: | + The LCD Controller (LCDC) consists of logic for transferring LCD image + data from an external display buffer to a TFT LCD panel. The LCDC has one + display input buffer per layer that fetches pixels through the single bus + host interface and a look-up table to allow palletized display + configurations. + +properties: + compatible: + const: atmel,hlcdc-display-controller + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + port@0: + $ref: /schemas/graph.yaml#/$defs/port-base + unevaluatedProperties: false + description: + Output endpoint of the controller, connecting the LCD panel signals. + + properties: + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + reg: + maxItems: 1 + + endpoint: + $ref: /schemas/graph.yaml#/$defs/endpoint + unevaluatedProperties: false + description: + Endpoint connecting the LCD panel signals. + + properties: + bus-width: + description: Endpoint bus width. + $ref: /schemas/media/video-interfaces.yaml# + enum: [ 12, 16, 18, 24 ] + +required: + - '#address-cells' + - '#size-cells' + - compatible + - port@0 + +additionalProperties: false + +examples: + - | + //Example 1 + + display-controller { + compatible = "atmel,hlcdc-display-controller"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_lcd_base &pinctrl_lcd_rgb888>; + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0>; + + hlcdc_panel_output: endpoint@0 { + reg = <0>; + remote-endpoint = <&panel_input>; + }; + }; + }; + + - | + //Example 2 With a video interface override to force rgb565, bus-width=16 + + display-controller { + compatible = "atmel,hlcdc-display-controller"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_lcd_base &pinctrl_lcd_rgb565>; + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0>; + hlcdc_panel_output2: endpoint@0 { + reg = <0>; + remote-endpoint = <&panel_input>; + bus-width = <16>; + }; + }; + }; diff --git a/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt b/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt deleted file mode 100644 index 923aea25344c..000000000000 --- a/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt +++ /dev/null @@ -1,75 +0,0 @@ -Device-Tree bindings for Atmel's HLCDC (High LCD Controller) DRM driver - -The Atmel HLCDC Display Controller is subdevice of the HLCDC MFD device. -See ../../mfd/atmel-hlcdc.txt for more details. - -Required properties: - - compatible: value should be "atmel,hlcdc-display-controller" - - pinctrl-names: the pin control state names. Should contain "default". - - pinctrl-0: should contain the default pinctrl states. - - #address-cells: should be set to 1. - - #size-cells: should be set to 0. - -Required children nodes: - Children nodes are encoding available output ports and their connections - to external devices using the OF graph representation (see ../graph.txt). - At least one port node is required. - -Optional properties in grandchild nodes: - Any endpoint grandchild node may specify a desired video interface - according to ../../media/video-interfaces.txt, specifically - - bus-width: recognized values are <12>, <16>, <18> and <24>, and - override any output mode selection heuristic, forcing "rgb444", - "rgb565", "rgb666" and "rgb888" respectively. - -Example: - - hlcdc: hlcdc@f0030000 { - compatible = "atmel,sama5d3-hlcdc"; - reg = <0xf0030000 0x2000>; - interrupts = <36 IRQ_TYPE_LEVEL_HIGH 0>; - clocks = <&lcdc_clk>, <&lcdck>, <&clk32k>; - clock-names = "periph_clk","sys_clk", "slow_clk"; - - hlcdc-display-controller { - compatible = "atmel,hlcdc-display-controller"; - pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_lcd_base &pinctrl_lcd_rgb888>; - #address-cells = <1>; - #size-cells = <0>; - - port@0 { - #address-cells = <1>; - #size-cells = <0>; - reg = <0>; - - hlcdc_panel_output: endpoint@0 { - reg = <0>; - remote-endpoint = <&panel_input>; - }; - }; - }; - - hlcdc_pwm: hlcdc-pwm { - compatible = "atmel,hlcdc-pwm"; - pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_lcd_pwm>; - #pwm-cells = <3>; - }; - }; - -Example 2: With a video interface override to force rgb565; as above -but with these changes/additions: - - &hlcdc { - hlcdc-display-controller { - pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_lcd_base &pinctrl_lcd_rgb565>; - - port@0 { - hlcdc_panel_output: endpoint@0 { - bus-width = <16>; - }; - }; - }; - };