From patchwork Wed Oct 22 16:27:54 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Agner X-Patchwork-Id: 5135721 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 3D6509F3ED for ; Wed, 22 Oct 2014 16:32:41 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9183620120 for ; Wed, 22 Oct 2014 16:32:39 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 42BEB2012D for ; Wed, 22 Oct 2014 16:32:38 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Xgyo4-0003KQ-HX; Wed, 22 Oct 2014 16:30:40 +0000 Received: from mail.kmu-office.ch ([178.209.48.102]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XgynJ-0001dF-Ck for linux-arm-kernel@lists.infradead.org; Wed, 22 Oct 2014 16:29:55 +0000 Received: from localhost (localhost [127.0.0.1]) by mail.kmu-office.ch (Postfix) with ESMTP id BA9D1403368 for ; Wed, 22 Oct 2014 18:27:24 +0200 (CEST) X-Virus-Scanned: by amavisd-new at kmu-office.ch Received: from mail.kmu-office.ch ([127.0.0.1]) by localhost (mail.kmu-office.ch [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id BCZG1B66Ym8Z for ; Wed, 22 Oct 2014 18:27:24 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by mail.kmu-office.ch (Postfix) with ESMTP id C1081405BE1 for ; Wed, 22 Oct 2014 18:27:22 +0200 (CEST) Received: from trochilidae.toradex.int (unknown [46.140.72.82]) (Authenticated sender: stefan@agner.ch) by mail.kmu-office.ch (Postfix) with ESMTPSA id F04B340177A; Wed, 22 Oct 2014 18:27:21 +0200 (CEST) From: Stefan Agner To: shawn.guo@freescale.com, kernel@pengutronix.de, arnd@arndb.de Subject: [PATCH v2 1/4] ARM: dts: vf610: assign oscillator to clock module Date: Wed, 22 Oct 2014 18:27:54 +0200 Message-Id: <1413995277-2844-2-git-send-email-stefan@agner.ch> X-Mailer: git-send-email 2.1.2 In-Reply-To: <1413995277-2844-1-git-send-email-stefan@agner.ch> References: <1413995277-2844-1-git-send-email-stefan@agner.ch> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141022_092953_810029_B9E08C09 X-CRM114-Status: GOOD ( 10.98 ) X-Spam-Score: 0.0 (/) Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, bpringlemeir@nbsps.com, linux-kernel@vger.kernel.org, stefan@agner.ch, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-3.3 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The clock controller module (CCM) has several clock inputs, which are connected to external crystal oscillators. To reflect this, assign these fixed clocks to the CCM node directly. This especially resolves initialization order dependencies we had with the earlier initialization code: When resolving of the fixed clocks failed in clk-vf610, the code created fixed clocks with a rate of 0. Signed-off-by: Stefan Agner --- .../devicetree/bindings/clock/vf610-clock.txt | 15 +++++++++++++ arch/arm/boot/dts/vf610-cosmic.dts | 14 ++++++------ arch/arm/boot/dts/vf610-twr.dts | 25 ++++++++++++---------- arch/arm/boot/dts/vf610.dtsi | 25 ++++++++++------------ 4 files changed, 48 insertions(+), 31 deletions(-) diff --git a/Documentation/devicetree/bindings/clock/vf610-clock.txt b/Documentation/devicetree/bindings/clock/vf610-clock.txt index c80863d..63f9f1a 100644 --- a/Documentation/devicetree/bindings/clock/vf610-clock.txt +++ b/Documentation/devicetree/bindings/clock/vf610-clock.txt @@ -5,6 +5,19 @@ Required properties: - reg: Address and length of the register set - #clock-cells: Should be <1> +Optional properties: +- clocks: list of clock identifiers which are external input clocks to the + given clock controller. Please refer the next section to find + the input clocks for a given controller. +- clock-names: list of names of clocks which are exteral input clocks to the + given clock controller. + +Input clocks for top clock controller: + - sxosc (external crystal oscillator 32KHz, recommended) + - fxosc (external crystal oscillator 24MHz, recommended) + - audio_ext + - enet_ext + The clock consumer should specify the desired clock by having the clock ID in its "clocks" phandle cell. See include/dt-bindings/clock/vf610-clock.h for the full list of VF610 clock IDs. @@ -15,6 +28,8 @@ clks: ccm@4006b000 { compatible = "fsl,vf610-ccm"; reg = <0x4006b000 0x1000>; #clock-cells = <1>; + clocks = <&sxosc>, <&fxosc>; + clock-names = "sxosc", "fxosc"; }; uart1: serial@40028000 { diff --git a/arch/arm/boot/dts/vf610-cosmic.dts b/arch/arm/boot/dts/vf610-cosmic.dts index 3fd1b74..b0ce8b8 100644 --- a/arch/arm/boot/dts/vf610-cosmic.dts +++ b/arch/arm/boot/dts/vf610-cosmic.dts @@ -23,14 +23,16 @@ reg = <0x80000000 0x10000000>; }; - clocks { - enet_ext { - compatible = "fixed-clock"; - #clock-cells = <0>; - clock-frequency = <50000000>; - }; + enet_ext: enet_ext { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <50000000>; }; +}; +&clks { + clocks = <&sxosc>, <&fxosc>, <&enet_ext>; + clock-names = "sxosc", "fxosc", "enet_ext"; }; &fec1 { diff --git a/arch/arm/boot/dts/vf610-twr.dts b/arch/arm/boot/dts/vf610-twr.dts index 189b697..7d06d1a 100644 --- a/arch/arm/boot/dts/vf610-twr.dts +++ b/arch/arm/boot/dts/vf610-twr.dts @@ -22,18 +22,16 @@ reg = <0x80000000 0x8000000>; }; - clocks { - audio_ext { - compatible = "fixed-clock"; - #clock-cells = <0>; - clock-frequency = <24576000>; - }; + audio_ext: mclk_osc { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <24576000>; + }; - enet_ext { - compatible = "fixed-clock"; - #clock-cells = <0>; - clock-frequency = <50000000>; - }; + enet_ext: eth_osc { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <50000000>; }; regulators { @@ -95,6 +93,11 @@ status = "okay"; }; +&clks { + clocks = <&sxosc>, <&fxosc>, <&enet_ext>, <&audio_ext>; + clock-names = "sxosc", "fxosc", "enet_ext", "audio_ext"; +}; + &dspi0 { bus-num = <0>; pinctrl-names = "default"; diff --git a/arch/arm/boot/dts/vf610.dtsi b/arch/arm/boot/dts/vf610.dtsi index 699da48..ed12d9a 100644 --- a/arch/arm/boot/dts/vf610.dtsi +++ b/arch/arm/boot/dts/vf610.dtsi @@ -44,21 +44,16 @@ }; }; - clocks { - #address-cells = <1>; - #size-cells = <0>; - - sxosc { - compatible = "fixed-clock"; - #clock-cells = <0>; - clock-frequency = <32768>; - }; + fxosc: fxosc { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <24000000>; + }; - fxosc { - compatible = "fixed-clock"; - #clock-cells = <0>; - clock-frequency = <24000000>; - }; + sxosc: sxosc { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <32768>; }; soc { @@ -358,6 +353,8 @@ clks: ccm@4006b000 { compatible = "fsl,vf610-ccm"; reg = <0x4006b000 0x1000>; + clocks = <&sxosc>, <&fxosc>; + clock-names = "sxosc", "fxosc"; #clock-cells = <1>; };