From patchwork Wed Aug 28 10:14:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiko Stuebner X-Patchwork-Id: 13781074 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 D2384C54E71 for ; Wed, 28 Aug 2024 10:20:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=H2K0zAoArSYqxte5X2D4PhODsFIDA8efuofXW5WP5do=; b=1YKUMLj8SaH6A/QFJ8jY2zq1J5 lKFG95CoJYp58NXLxWZZd7aMJOtS3Tcu8DcBQulfC1UI2d63y82z7bLOkvoaX+05jZ0WzNU58kLx0 GteYwpmBLgnxEroYA5LEvbsxxLEHiFS8fU+caE7SaYMcHp3PxT3e63MAT/YGhakdq1wahR93qjOMn INoRAW9ckV9AkXVzxByRvic7MhsGEl7eq1KltCtZofF5Fdo8kQRWj5CA3TNpi9QjCWYZLXNzlTXZc HPeFyrsMCRGmj1uVIBh3QEo1Aau9+1c/G5luQVOZjdu/7j61rTLO3E/tl9hsrI03RAWmYe3jk+LO4 xqpgmCwA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sjFn7-0000000EuP2-1nU9; Wed, 28 Aug 2024 10:20:41 +0000 Received: from gloria.sntech.de ([185.11.138.130]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sjFhx-0000000EsRX-2ZHC; Wed, 28 Aug 2024 10:15:25 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sntech.de; s=gloria202408; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=H2K0zAoArSYqxte5X2D4PhODsFIDA8efuofXW5WP5do=; b=Ng3MEAGJ2czRhxq3mImVOHknWx TEbw0Nm6FsoEYe7ymgW0ivBDzvWutrqN32bLfl6BKPBVNDvnwo35StNPtfpifr4ziIx1GQLOqpjGv omypbq5QJk+T/Npzv5sd6zHn45pL2Y/d/LuHx8ogdUi3lpZoZrIN0Pn/jsoSUe8oe5GI0vy+95DkD inFffYhQIrTtO9uLNbqNbakQ2mDFPgNfDV6MxOx8j7Fl/Pt8RzW6fwz3ySL+PNk1KgflXSRNUXe3i mkA7Y2pE+ahLJaxsK8lrVDVGbnJYGsJO0xqeiuOEL1FYb2ujXU5RNU2HRs8GbD5IDwCctGL4n9SRo B57WXp2w==; Received: from i5e8616cd.versanet.de ([94.134.22.205] helo=phil.lan) by gloria.sntech.de with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sjFhs-0004M3-94; Wed, 28 Aug 2024 12:15:16 +0200 From: Heiko Stuebner To: mturquette@baylibre.com, sboyd@kernel.org Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux-clk@vger.kernel.org, heiko@sntech.de, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org Subject: [PATCH v3 1/5] dt-bindings: clocks: add binding for gated-fixed-clocks Date: Wed, 28 Aug 2024 12:14:59 +0200 Message-ID: <20240828101503.1478491-2-heiko@sntech.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240828101503.1478491-1-heiko@sntech.de> References: <20240828101503.1478491-1-heiko@sntech.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240828_031521_677684_CA4A228E X-CRM114-Status: GOOD ( 16.60 ) 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 In contrast to fixed clocks that are described as ungateable, boards sometimes use additional oscillators for things like PCIe reference clocks, that need actual supplies to get enabled and enable-gpios to be toggled for them to work. This adds a binding for such oscillators that are not configurable themself, but need to handle supplies for them to work. In schematics they often can be seen as ---------------- Enable - | 100MHz,3.3V, | - VDD | 3225 | GND - | | - OUT ---------------- or similar. The enable pin might be separate but can also just be tied to the vdd supply, hence it is optional in the binding. Signed-off-by: Heiko Stuebner Reviewed-by: Rob Herring (Arm) Reviewed-by: Conor Dooley --- .../bindings/clock/gated-fixed-clock.yaml | 49 +++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/gated-fixed-clock.yaml diff --git a/Documentation/devicetree/bindings/clock/gated-fixed-clock.yaml b/Documentation/devicetree/bindings/clock/gated-fixed-clock.yaml new file mode 100644 index 000000000000..76d264770d35 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/gated-fixed-clock.yaml @@ -0,0 +1,49 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/gated-fixed-clock.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Gated Fixed clock + +maintainers: + - Heiko Stuebner + +properties: + compatible: + const: gated-fixed-clock + + "#clock-cells": + const: 0 + + clock-frequency: true + + clock-output-names: + maxItems: 1 + + enable-gpios: + description: + Contains a single GPIO specifier for the GPIO that enables and disables + the oscillator. + maxItems: 1 + + vdd-supply: + description: handle of the regulator that provides the supply voltage + +required: + - compatible + - "#clock-cells" + - clock-frequency + - vdd-supply + +additionalProperties: false + +examples: + - | + voltage-oscillator { + compatible = "gated-fixed-clock"; + #clock-cells = <0>; + clock-frequency = <1000000000>; + vdd-supply = <®_vdd>; + }; +...