From patchwork Wed Jan 24 10:00:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dharma Balasubiramani X-Patchwork-Id: 765727 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9E850182B3; Wed, 24 Jan 2024 10:01:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=68.232.154.123 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706090479; cv=none; b=WCkRYnW3mqFqQUXE/PTzFb4bcWrRm8BrdkUm/Zg5roJT5WSF93TAaddP3o9GHLaYhwTbMRpTc0YXKqyRfIrc4oC8mvdxWdeXbDrxS0hfS/G+gnGSB5JYSneMDghdOZhBIvtIG5H/XLLsnLKA0I8t6fBm3CQNIWrajwOAtMZOqAI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706090479; c=relaxed/simple; bh=jIDWduTFtYpC86U78bFtNesGnbEIBT3A8nSw6gzET7E=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Wd7rtGqup2J/9d5Sb4bGAr8WOt9FaZ9nR5OtpHdELquvUHEwFe1X1tx8eGrkVu1XkMnHZx2YLfK0ibFEfU/nFhC/REbh/AwsG/uoSOgwQxomuszIw96k+aXAnU/ABom1vH8sKzoTCU8fwfRk8Ms1ZGEW0rKz+LlRazPAm47q9L8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=microchip.com; spf=pass smtp.mailfrom=microchip.com; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b=EEJZGKkn; arc=none smtp.client-ip=68.232.154.123 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=microchip.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=microchip.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="EEJZGKkn" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1706090477; x=1737626477; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=jIDWduTFtYpC86U78bFtNesGnbEIBT3A8nSw6gzET7E=; b=EEJZGKknA3+zuM7GuLmI3QeYssCcy0OPtKd6t+OTeyUaFXcZ5Hrvfb3z tlLsEFtb0v7CfLSkuIDl+mGqyL33yxf2QOf70X/Fjy2rK4WdwWL2aERKY dz78mdtcWD4spCAyLADPU7FgLIC9Q6t6ZSlZD+Wpr/Izygd2UIvAyJJxl ZjEErkvMNqtYkC60XN0cfvyjHLPv0zx4T8/Turq1PMTSyiS3Bnl8OeDbV ebhsAaLRiq2yDZs12Zz2NLf6a1rjGYI8+KKjhX7za267gZhhv8rED824j /A2IPqDclqS40CcaJLzUQbDXVP4uGOyNaWZk7iiCbcsN5wfGMuZSB+0Jy A==; X-CSE-ConnectionGUID: 1QMie5Z5QlKTBJNwgsTZyw== X-CSE-MsgGUID: eAkncTxtS1W+qHNgpZjXtg== X-IronPort-AV: E=Sophos;i="6.05,216,1701154800"; d="scan'208";a="15213686" 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; 24 Jan 2024 03:01:09 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) 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; Wed, 24 Jan 2024 03:00:39 -0700 Received: from che-lt-i70843lx.microchip.com (10.10.85.11) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.2507.35 via Frontend Transport; Wed, 24 Jan 2024 03:00:31 -0700 From: Dharma Balasubiramani To: , , , , , , , , , , , , , , , , , , , , CC: Dharma Balasubiramani Subject: [PATCH v4 1/3] dt-bindings: display: convert Atmel's HLCDC to DT schema Date: Wed, 24 Jan 2024 15:30:17 +0530 Message-ID: <20240124100019.290120-2-dharma.b@microchip.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240124100019.290120-1-dharma.b@microchip.com> References: <20240124100019.290120-1-dharma.b@microchip.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Convert the existing DT binding to DT schema of the Atmel's HLCDC display controller. Signed-off-by: Dharma Balasubiramani --- changelog v3 -> v4 - Add bus-width property to have one complete example. v2 -> v3 - Remove '|' in description, as there is no formatting to preserve. - Ref video-interfaces as endpoint. - Remove ref and description for bus-width. - Add new line before the child node in example. - Remove 'example 2', as it is not required for just one additional property. 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 | 85 +++++++++++++++++++ .../bindings/display/atmel/hlcdc-dc.txt | 75 ---------------- 2 files changed, 85 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..e59d16dce652 --- /dev/null +++ b/Documentation/devicetree/bindings/display/atmel/atmel,hlcdc-display-controller.yaml @@ -0,0 +1,85 @@ +# 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/media/video-interfaces.yaml# + unevaluatedProperties: false + description: + Endpoint connecting the LCD panel signals. + + properties: + bus-width: + enum: [ 12, 16, 18, 24 ] + +required: + - '#address-cells' + - '#size-cells' + - compatible + - port@0 + +additionalProperties: false + +examples: + - | + 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_output: endpoint@0 { + reg = <0>; + bus-width = <16>; + remote-endpoint = <&panel_input>; + }; + }; + }; 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>; - }; - }; - }; - };