From patchwork Wed Jan 31 03:35:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dharma Balasubiramani X-Patchwork-Id: 13538570 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 1523DC47DB3 for ; Wed, 31 Jan 2024 03:36:45 +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=i0POEyBELqWKuFE4wnGBrWmDAC5DScSqAnv/00etY/A=; b=QbbGjir3hVKEtz +YJbyDXENVXqHGQRi3YxGYOYffwCyRrBQ/WYM+HnTiKIVu+LoYXAJIAUzfUcPz8QN7aXU4A/dRL/q H+00s//MFF+rAxmJRrzDChvLExD+jfsMhTVeWKpnYmFMcjMfU22g0qBUo4H+zSBnck85rdfSDOZ5A L6Hde8wRWdVY2AYNZAUW/fwlsL47qL8wPSeHD+b4/66FP3aWs8nDZQSAGVJNG5JIZOgB8cmB1/3To bcamUMZsLqFzDrhVR7TiJNOo/f8TXfJYy5YLAyWPeeNm8VvgvrrpxacERreBYAsJTnyArIfQUs9Cp ttqFBqKpTZDEn8AyVxSg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rV1Ot-00000001Nr9-3Nae; Wed, 31 Jan 2024 03:36:35 +0000 Received: from esa.microchip.iphmx.com ([68.232.154.123]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rV1Og-00000001Nk8-0QbU for linux-arm-kernel@lists.infradead.org; Wed, 31 Jan 2024 03:36:23 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1706672181; x=1738208181; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=XT0bHFobJmRfHg3nHaesYL94nri6XD6wL1E3rwFVUA4=; b=F/njw+tMHdXgkYvbkm/GuXQe6kRVKySffM3s49Fp2+Z/Melw/d8PQCac zSJRh6aB3ZgdCvBmfMUyCfTGm48z0Ve2KHHEVAxmbAx6QdXBrccyQZxkP VhSbvWLACC17Kwvfk3BTYodHYyfx5N7lhQTsjPrTofOV+fZyGhY0q9ltQ 5/34itb8ct0WoV+3QZbWRoPzesKV957Ed1qV3ybqG332NigYlm0C4/8is YBBHj5PeCPPwsdS97zDj6Rt7p/KNgdCEWK1fq+rOSe/mY5xam40jHR1vi NR95rnrFQigjv10xnk9irCUXHz1PBnEx0u7XieskA0v1UYm5zliWTn2Y0 A==; X-CSE-ConnectionGUID: +XEgZ6ByRE2uf35ecqUrlw== X-CSE-MsgGUID: U09GgqQxRNWtQAZjBWjkzw== X-IronPort-AV: E=Sophos;i="6.05,231,1701154800"; d="scan'208";a="15536692" 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 20:36:16 -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 20:35:58 -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 20:35:51 -0700 From: Dharma Balasubiramani To: , , , , , , , , , , , , , , , , , , , , CC: , , "Dharma Balasubiramani" Subject: [linux][PATCH v5 3/3] dt-bindings: mfd: atmel,hlcdc: Convert to DT schema format Date: Wed, 31 Jan 2024 09:05:23 +0530 Message-ID: <20240131033523.577450-4-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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240130_193622_206124_25A53CE5 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. Align clocks and clock-names properties to clearly indicate that the LCD controller expects lvds_pll_clk when interfaced with the lvds display. This alignment with the specific hardware requirements ensures accurate device tree configuration for systems utilizing the HLCDC IP. Signed-off-by: Dharma Balasubiramani Reviewed-by: Conor Dooley --- Changelog v4 -> v5 - Revert v3 dropping lvds_pll_clk instead add it as an optional clock. - Update minItems to 3. - Update commit message accordingly. v3 -> v4 - Drop lvds_pll_clk, It can be enabled in lvds driver itself. - Update commit message. Note: Since there is no complexities now, I believe that specifying maxitems in the clocks property should be sufficient. v2 -> v3 - Rename hlcdc-display-controller and hlcdc-pwm to generic names. - Modify the description by removing the unwanted comments and '|'. - Modify clock-names simpler. 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. ... .../devicetree/bindings/mfd/atmel,hlcdc.yaml | 99 +++++++++++++++++++ .../devicetree/bindings/mfd/atmel-hlcdc.txt | 56 ----------- 2 files changed, 99 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..4aa36903e755 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/atmel,hlcdc.yaml @@ -0,0 +1,99 @@ +# 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 and 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: + minItems: 3 + + clock-names: + items: + - const: periph_clk + - const: sys_clk + - const: slow_clk + - const: lvds_pll_clk + minItems: 3 + + display-controller: + $ref: /schemas/display/atmel/atmel,hlcdc-display-controller.yaml + + 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>; + + 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>; + }; + }; + }; + + 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>; - }; - };