From patchwork Tue Aug 20 15:45:07 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leonard Crestez X-Patchwork-Id: 11104137 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BEA051395 for ; Tue, 20 Aug 2019 15:45:53 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 9D15722CE3 for ; Tue, 20 Aug 2019 15:45:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="HH2gY9rs" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9D15722CE3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=MPMXHbUPdGWf+56K5TmJNy1nM9Wwoyq04erj6/qIz/U=; b=HH2gY9rsVTXvYe4mBxDlFW8PJN GZW3vEgdJX5c+ccYClsmm68K/26s1dWhj5eG+y+mgk/8jNCVkaTb/gLVFJQ22UvZo5+hUohT3VwiB JrFmmqPCj+JebPnpKUOnn8/GOJiw2Nm90fb3+70/Gam+DIy/MDbdfliDP1cLViTFzcLB/TRKPxcdE b4kZlIcezwb3Fp8EQ2693vXS1dGnIshh9Q+wQdPnGkq+29qj2TjiEvEdbaeDCZbPLbGtsumViaNl/ xBDOct+F6/B7/S9zLDguDtgYnplxf/KYYQkQUIfM4kVBdPqiCnxulTQRCd1U4ZtxrH3xzz5vcFhdp JecdAEVA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i06KW-0007XW-T5; Tue, 20 Aug 2019 15:45:52 +0000 Received: from inva020.nxp.com ([92.121.34.13]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i06K4-000712-4A for linux-arm-kernel@lists.infradead.org; Tue, 20 Aug 2019 15:45:25 +0000 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id D0D341A0111; Tue, 20 Aug 2019 17:45:22 +0200 (CEST) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id C3AB31A0100; Tue, 20 Aug 2019 17:45:22 +0200 (CEST) Received: from fsr-ub1864-112.ea.freescale.net (fsr-ub1864-112.ea.freescale.net [10.171.82.98]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id BE50720604; Tue, 20 Aug 2019 17:45:21 +0200 (CEST) From: Leonard Crestez To: Stephen Boyd , Shawn Guo , MyungJoo Ham , Chanwoo Choi , Rob Herring Subject: [PATCH v2 2/7] dt-bindings: devfreq: Add bindings for generic imx buses Date: Tue, 20 Aug 2019 18:45:07 +0300 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190820_084524_438455_A9AB8FD3 X-CRM114-Status: GOOD ( 10.02 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [92.121.34.13 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= , Abel Vesa , Saravana Kannan , Anson Huang , linux-arm-kernel@lists.infradead.org, Viresh Kumar , Michael Turquette , linux-pm@vger.kernel.org, linux-imx@nxp.com, Krzysztof Kozlowski , linux-clk@vger.kernel.org, Kyungmin Park , Alexandre Bailon , kernel@pengutronix.de, Dong Aisheng , Fabio Estevam , Georgi Djakov , devicetree@vger.kernel.org, Jacky Bai MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add initial dt bindings for the interconnects inside i.MX chips. Multiple external IPs are involved but SOC integration means the software controllable interfaces are very similar. This is initially only for imx8mm but add an "fsl,imx8m-nic" fallback similar to exynos-bus. Signed-off-by: Leonard Crestez Acked-by: MyungJoo Ham --- .../devicetree/bindings/devfreq/imx.yaml | 68 +++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 Documentation/devicetree/bindings/devfreq/imx.yaml diff --git a/Documentation/devicetree/bindings/devfreq/imx.yaml b/Documentation/devicetree/bindings/devfreq/imx.yaml new file mode 100644 index 000000000000..634870496d5e --- /dev/null +++ b/Documentation/devicetree/bindings/devfreq/imx.yaml @@ -0,0 +1,68 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/devfreq/imx.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Generic i.MX bus frequency device + +maintainers: + - Leonard Crestez + +description: | + The i.MX SoC family has multiple buses for which clock frequency (and sometimes + voltage) can be adjusted. + + Some of those buses expose register areas mentioned in the memory maps as GPV + ("Global Programmers View") but not all. Access to this area might be denied for + normal world. + + The buses are based on externally licensed IPs such as ARM NIC-301 and Arteris + FlexNOC but DT bindings are specific to the integration of these bus + interconnect IPs into imx SOCs. + +properties: + compatible: + oneOf: + - items: + - enum: + - fsl,imx8mn-nic + - fsl,imx8mm-nic + - fsl,imx8mq-nic + - const: fsl,imx8m-nic + - items: + - enum: + - fsl,imx8mn-noc + - fsl,imx8mm-noc + - fsl,imx8mq-noc + - const: fsl,imx8m-noc + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + operating-points-v2: true + + devfreq: + description: | + Phandle to another devfreq device to match OPPs with by using the + passive governor. + $ref: "/schemas/types.yaml#/definitions/phandle" + +required: + - compatible + - clocks + +additionalProperties: false + +examples: + - | + #include + noc: noc@32700000 { + compatible = "fsl,imx8mm-noc", "fsl,imx8m-noc"; + reg = <0x32700000 0x100000>; + clocks = <&clk IMX8MM_CLK_NOC>; + operating-points-v2 = <&noc_opp_table>; + };