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>; - }; - }; - }; - }; From patchwork Tue Jan 16 11:37:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dharma Balasubiramani X-Patchwork-Id: 13520727 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 D8EBDC47077 for ; 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d="scan'208";a="245533631" 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 04:39:21 -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 04:38:51 -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 04:38:40 -0700 From: Dharma Balasubiramani To: , , , , , , , , , , , , , , , , , , , , , CC: , Dharma Balasubiramani Subject: [PATCH v2 2/3] dt-bindings: atmel,hlcdc: convert pwm bindings to json-schema Date: Tue, 16 Jan 2024 17:07:59 +0530 Message-ID: <20240116113800.82529-3-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_033922_113675_00399FA7 X-CRM114-Status: GOOD ( 16.82 ) 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 device tree bindings for Atmel's HLCDC PWM controller to YAML format. Signed-off-by: Dharma Balasubiramani Reviewed-by: Conor Dooley --- changelog 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 | 47 +++++++++++++++++++ .../bindings/pwm/atmel-hlcdc-pwm.txt | 29 ------------ 2 files changed, 47 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..751122309fa9 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/atmel,hlcdc-pwm.yaml @@ -0,0 +1,47 @@ +# 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 + description: | + This PWM chip uses the default 3 cells bindings defined in pwm.yaml in + this directory. + +required: + - compatible + - "#pwm-cells" + +additionalProperties: false + +examples: + - | + pwm: 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>; - }; - }; From patchwork Tue Jan 16 11:38:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dharma Balasubiramani X-Patchwork-Id: 13520729 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 2F3C7C47077 for ; Tue, 16 Jan 2024 11:40:01 +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=60NwFP87X+gZztAAcsuoQVevovY96SEHLe7xCTRDys4=; b=ycwJNI8Msg+HfM KvqBBdfuSLv0NqUXdzdGNyxDjXHyEZKvxShADGPLR9mrjdCvBztIRsPQ+74yHmx7H9BiwMl8np0Ps s/SHPAeGeMKSMjJQWa+BVEU7gf77ucbX1bm+4k0UOtTu3mgdRNlbrIhUUltXxGpErHwKmBIfGAIwx aT+nSfgsZTLYmqq3f/O2863c9EBtb2mkldebr6j4e+LjwY2eTPxPLOjmhEu1PgiY1tdJ2hqcY93gl NKKq6yJDtA5o4ti2CwBUh3bAhAytZOECXRuWJ6xEM9BfnR+Kex5RqfI3buY2j0rdj80frGHU6xpYV P98QyolBTWl6phdQWsRQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rPhn2-00Bxaa-2o; Tue, 16 Jan 2024 11:39:32 +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 1rPhmt-00BxW4-2T for linux-arm-kernel@lists.infradead.org; Tue, 16 Jan 2024 11:39:25 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1705405164; x=1736941164; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=GSW8gfeJDJGG4Eyjlb7l7mF/XAzi1B1v2cpDaXS8Ako=; b=y4RLWadsbbaoSmnlhe9OdchVw/RP79pkykrqMUpzsPk/x4yQw1JYdhwa uPNxwGK5jJTprRZHCu/MdtyiicZN0WIm6WKB339PgVM2/DLN74/qZLcnR K/9VWsRNwkpydRQc1k2kf035vJKSfKNB68Mw/TUJVOsd9jAaDw78ShGbq Php6Rg26zFhRPvDGqJR5pWrXMqze3QGKhF7jlh0MsUrbO71tQJGSUgYT0 3UTz2RWEYLOBEyGh9lNPzYBp5TpZ+VGcEvAtT0aaFH/aGfUu4YSLUia66 4jWp4sOA4kz7qsLy0Ag9IBpQdgVycAsyhdnrltPG1OkTdm6CEoTxqJseZ w==; X-CSE-ConnectionGUID: m9+TCx76QtaEOtm0pEMV+w== X-CSE-MsgGUID: fVuuBNdNSA6Yok3rfvz1qA== X-IronPort-AV: E=Sophos;i="6.05,199,1701154800"; d="scan'208";a="245533633" 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 04:39:22 -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 04:39:02 -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 04:38:51 -0700 From: Dharma Balasubiramani To: , , , , , , , , , , , , , , , , , , , , , CC: , Dharma Balasubiramani Subject: [PATCH v2 3/3] dt-bindings: mfd: atmel,hlcdc: Convert to DT schema format Date: Tue, 16 Jan 2024 17:08:00 +0530 Message-ID: <20240116113800.82529-4-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_033923_820196_464B185C X-CRM114-Status: GOOD ( 18.20 ) 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 atmel,hlcdc binding to DT schema format. Adjust the clock-names property to clarify that the LCD controller expects one of these clocks (either sys_clk or lvds_pll_clk to be present but not both) along with the slow_clk and periph_clk. This alignment with the actual hardware requirements will enable accurate device tree configuration for systems using the HLCDC IP. Signed-off-by: Dharma Balasubiramani --- changelog v1 -> v2 - Remove the explicit copyrights. - Modify title (not include words like binding/driver). - Modify description actually describing the hardware and not the driver. - Add details of lvds_pll addition in commit message. - Ref endpoint and not endpoint-base. - Fix coding style. Note: Renaming hlcdc-display-controller, hlcdc-pwm to generic names throws errors from the existing DTS files. ... /home/dharma/Mainline/linux/arch/arm/boot/dts/microchip/at91sam9n12ek.dtb: hlcdc@f8038000: 'hlcdc-display-controller' does not match any of the regexes: 'pinctrl-[0-9]+' --- .../devicetree/bindings/mfd/atmel,hlcdc.yaml | 105 ++++++++++++++++++ .../devicetree/bindings/mfd/atmel-hlcdc.txt | 56 ---------- 2 files changed, 105 insertions(+), 56 deletions(-) create mode 100644 Documentation/devicetree/bindings/mfd/atmel,hlcdc.yaml delete mode 100644 Documentation/devicetree/bindings/mfd/atmel-hlcdc.txt diff --git a/Documentation/devicetree/bindings/mfd/atmel,hlcdc.yaml b/Documentation/devicetree/bindings/mfd/atmel,hlcdc.yaml new file mode 100644 index 000000000000..f624b60b76fb --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/atmel,hlcdc.yaml @@ -0,0 +1,105 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/atmel,hlcdc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Atmel's HLCD Controller + +maintainers: + - Nicolas Ferre + - Alexandre Belloni + - Claudiu Beznea + +description: | + The Atmel HLCDC (HLCD Controller) IP available on Atmel SoCs exposes two + subdevices + # a PWM chip: + # a Display Controller: + +properties: + compatible: + enum: + - atmel,at91sam9n12-hlcdc + - atmel,at91sam9x5-hlcdc + - atmel,sama5d2-hlcdc + - atmel,sama5d3-hlcdc + - atmel,sama5d4-hlcdc + - microchip,sam9x60-hlcdc + - microchip,sam9x75-xlcdc + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 3 + + clock-names: + anyOf: + - items: + - enum: + - sys_clk + - lvds_pll_clk + - contains: + const: periph_clk + - contains: + const: slow_clk + maxItems: 3 + + hlcdc-display-controller: + $ref: /schemas/display/atmel/atmel,hlcdc-display-controller.yaml + + hlcdc-pwm: + $ref: /schemas/pwm/atmel,hlcdc-pwm.yaml + +required: + - compatible + - reg + - clocks + - clock-names + - interrupts + +additionalProperties: false + +examples: + - | + #include + #include + #include + + lcd_controller: lcd-controller@f0030000 { + compatible = "atmel,sama5d3-hlcdc"; + reg = <0xf0030000 0x2000>; + clocks = <&lcdc_clk>, <&lcdck>, <&clk32k>; + clock-names = "periph_clk", "sys_clk", "slow_clk"; + interrupts = <36 IRQ_TYPE_LEVEL_HIGH 0>; + + 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 { + compatible = "atmel,hlcdc-pwm"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_lcd_pwm>; + #pwm-cells = <3>; + }; + }; diff --git a/Documentation/devicetree/bindings/mfd/atmel-hlcdc.txt b/Documentation/devicetree/bindings/mfd/atmel-hlcdc.txt deleted file mode 100644 index 7de696eefaed..000000000000 --- a/Documentation/devicetree/bindings/mfd/atmel-hlcdc.txt +++ /dev/null @@ -1,56 +0,0 @@ -Device-Tree bindings for Atmel's HLCDC (High LCD Controller) MFD driver - -Required properties: - - compatible: value should be one of the following: - "atmel,at91sam9n12-hlcdc" - "atmel,at91sam9x5-hlcdc" - "atmel,sama5d2-hlcdc" - "atmel,sama5d3-hlcdc" - "atmel,sama5d4-hlcdc" - "microchip,sam9x60-hlcdc" - "microchip,sam9x75-xlcdc" - - reg: base address and size of the HLCDC device registers. - - clock-names: the name of the 3 clocks requested by the HLCDC device. - Should contain "periph_clk", "sys_clk" and "slow_clk". - - clocks: should contain the 3 clocks requested by the HLCDC device. - - interrupts: should contain the description of the HLCDC interrupt line - -The HLCDC IP exposes two subdevices: - - a PWM chip: see ../pwm/atmel-hlcdc-pwm.txt - - a Display Controller: see ../display/atmel/hlcdc-dc.txt - -Example: - - hlcdc: hlcdc@f0030000 { - compatible = "atmel,sama5d3-hlcdc"; - reg = <0xf0030000 0x2000>; - clocks = <&lcdc_clk>, <&lcdck>, <&clk32k>; - clock-names = "periph_clk","sys_clk", "slow_clk"; - interrupts = <36 IRQ_TYPE_LEVEL_HIGH 0>; - - 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>; - }; - };