From patchwork Wed Jan 31 03:35:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dharma Balasubiramani X-Patchwork-Id: 13538567 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 F389AC47DB3 for ; Wed, 31 Jan 2024 03:36:29 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7FF821138DA; Wed, 31 Jan 2024 03:36:22 +0000 (UTC) Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by gabe.freedesktop.org (Postfix) with ESMTPS id E201C1138D9 for ; Wed, 31 Jan 2024 03:36:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1706672180; x=1738208180; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=U4nu0SSRIOV/I1x868UpWnGqhiUCxDm728KMZE9eQFU=; b=vNknWUuxiTrNOjv9b79Idtt1LpWm8+R36LqAgNVRmugrkXFio5anVAw5 Fw2Z2IP137AXH8LuQ9W1j7FIr77T9P1l+pUpOpC3VUVBgnKvt6xq836IL xww6S/rg7k3wEaFqKxPf7h7MBRAUeW6MBaYg2fcWaCJXIO5GulHZQWdRX iqqjnnWqno3BxMXo8UEzrKJHWJkntDf9ggd81L9xWlVvCz8UXdh4cqnmC 5GaoPKEl4VXQGD6a7q2GRHdHvO030J2Txi4tFrwDDZgskLIn+/ZrxDiw2 j+9u676rR6p+ELfcYGjIOuD96fI85/VGOlQ7GVCN1gDA0KtwTSJ1c0fRC w==; X-CSE-ConnectionGUID: +XEgZ6ByRE2uf35ecqUrlw== X-CSE-MsgGUID: xcLhiBGESrOTTZy8fyAz1A== X-IronPort-AV: E=Sophos;i="6.05,231,1701154800"; d="scan'208";a="15536688" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa4.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 30 Jan 2024 20:36:15 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Tue, 30 Jan 2024 20:35:50 -0700 Received: from che-lt-i70843lx.microchip.com (10.10.85.11) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.35 via Frontend Transport; Tue, 30 Jan 2024 20:35:42 -0700 From: Dharma Balasubiramani To: , , , , , , , , , , , , , , , , , , , , Subject: [linux][PATCH v5 2/3] dt-bindings: atmel, hlcdc: convert pwm bindings to json-schema Date: Wed, 31 Jan 2024 09:05:22 +0530 Message-ID: <20240131033523.577450-3-dharma.b@microchip.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240131033523.577450-1-dharma.b@microchip.com> References: <20240131033523.577450-1-dharma.b@microchip.com> MIME-Version: 1.0 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: , Cc: hari.prasathge@microchip.com, manikandan.m@microchip.com, Dharma Balasubiramani , Conor Dooley Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Convert device tree bindings for Atmel's HLCDC PWM controller to YAML format. Signed-off-by: Dharma Balasubiramani Reviewed-by: Conor Dooley --- Changelog v4 -> v5 v3 -> v4 - No changes Note: The clean up patch will be sent later as Sam suggested. v2 -> v3 - Remove '|' in description, as there is no formatting to preserve. - Delete the description for pwm-cells. - Drop the label for pwm node as it not used. v1 -> v2 - Remove the explicit copyrights. - Modify title (not include words like binding/driver). - Modify description actually describing the hardware and not the driver. - Remove pinctrl properties which aren't required. - Drop parent node and it's other sub-device node which are not related here. --- .../bindings/pwm/atmel,hlcdc-pwm.yaml | 44 +++++++++++++++++++ .../bindings/pwm/atmel-hlcdc-pwm.txt | 29 ------------ 2 files changed, 44 insertions(+), 29 deletions(-) create mode 100644 Documentation/devicetree/bindings/pwm/atmel,hlcdc-pwm.yaml delete mode 100644 Documentation/devicetree/bindings/pwm/atmel-hlcdc-pwm.txt diff --git a/Documentation/devicetree/bindings/pwm/atmel,hlcdc-pwm.yaml b/Documentation/devicetree/bindings/pwm/atmel,hlcdc-pwm.yaml new file mode 100644 index 000000000000..4f4cc21fe4f7 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/atmel,hlcdc-pwm.yaml @@ -0,0 +1,44 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pwm/atmel,hlcdc-pwm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Atmel's HLCDC's PWM controller + +maintainers: + - Nicolas Ferre + - Alexandre Belloni + - Claudiu Beznea + +description: + The LCDC integrates a Pulse Width Modulation (PWM) Controller. This block + generates the LCD contrast control signal (LCD_PWM) that controls the + display's contrast by software. LCDC_PWM is an 8-bit PWM signal that can be + converted to an analog voltage with a simple passive filter. LCD display + panels have different backlight specifications in terms of minimum/maximum + values for PWM frequency. If the LCDC PWM frequency range does not match the + LCD display panel, it is possible to use the standalone PWM Controller to + drive the backlight. + +properties: + compatible: + const: atmel,hlcdc-pwm + + "#pwm-cells": + const: 3 + +required: + - compatible + - "#pwm-cells" + +additionalProperties: false + +examples: + - | + pwm { + compatible = "atmel,hlcdc-pwm"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_lcd_pwm>; + #pwm-cells = <3>; + }; diff --git a/Documentation/devicetree/bindings/pwm/atmel-hlcdc-pwm.txt b/Documentation/devicetree/bindings/pwm/atmel-hlcdc-pwm.txt deleted file mode 100644 index afa501bf7f94..000000000000 --- a/Documentation/devicetree/bindings/pwm/atmel-hlcdc-pwm.txt +++ /dev/null @@ -1,29 +0,0 @@ -Device-Tree bindings for Atmel's HLCDC (High-end LCD Controller) PWM driver - -The Atmel HLCDC PWM is subdevice of the HLCDC MFD device. -See ../mfd/atmel-hlcdc.txt for more details. - -Required properties: - - compatible: value should be one of the following: - "atmel,hlcdc-pwm" - - pinctr-names: the pin control state names. Should contain "default". - - pinctrl-0: should contain the pinctrl states described by pinctrl - default. - - #pwm-cells: should be set to 3. This PWM chip use the default 3 cells - bindings defined in pwm.yaml in this directory. - -Example: - - hlcdc: hlcdc@f0030000 { - compatible = "atmel,sama5d3-hlcdc"; - reg = <0xf0030000 0x2000>; - clocks = <&lcdc_clk>, <&lcdck>, <&clk32k>; - clock-names = "periph_clk","sys_clk", "slow_clk"; - - hlcdc_pwm: hlcdc-pwm { - compatible = "atmel,hlcdc-pwm"; - pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_lcd_pwm>; - #pwm-cells = <3>; - }; - };