From patchwork Wed Jul 24 12:38:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leonard Crestez X-Patchwork-Id: 11056787 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6060D746 for ; Wed, 24 Jul 2019 12:39:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4FA5A28803 for ; Wed, 24 Jul 2019 12:39:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 42D7928814; Wed, 24 Jul 2019 12:39:30 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E5F2528803 for ; Wed, 24 Jul 2019 12:39:29 +0000 (UTC) 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=nQ3moKCGeWa+Un6mOm+ylb3hBvyAQNUGlxHlYpXbOSY=; b=ISxgkq5oEHZbGp+twUoLOUhlmA 84XUCMkXIL25sldPaCIPv+PtfLSgqCmgNmJ9eYy0IQkYq2Qykudn/9BxMheTqJayC7IEHYEXXIWLv Ce7HzEy+FBhkz5Dy/lccvCFyA08eegYsjNeuj6ANGTvsBkj34rXNFeOdUtkunfG5p2tPssJFryZX4 w+uq+OrZUPUxMv1l1+92GIeP0wBvEw/d5J0uKFQnz/V8UoxUrg7mgbEkztNDOX8Rr/jMpoIZ4kcHq 1AJk1ZPpX0HcYs6oC0zBn9/EEzhZZhw3t6c7MzVU1z+QNQioCN3mTUa9C3V/1AwzmWNTHJSvxPb7h P8hBzsFg==; 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 1hqGYK-0002sC-M4; Wed, 24 Jul 2019 12:39:28 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hqGXo-0002Pj-2C for linux-arm-kernel@lists.infradead.org; Wed, 24 Jul 2019 12:38:58 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 8FB2C20026B; Wed, 24 Jul 2019 14:38:52 +0200 (CEST) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 7FECC200265; Wed, 24 Jul 2019 14:38:52 +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 40BB2205D8; Wed, 24 Jul 2019 14:38:51 +0200 (CEST) From: Leonard Crestez To: MyungJoo Ham , Kyungmin Park , Will Deacon , Stephen Boyd Subject: [RFCv3 1/3] dt-bindings: devfreq: Add initial bindings for i.MX Date: Wed, 24 Jul 2019 15:38:44 +0300 Message-Id: <93df6e7d81a404a43af684e2f96bdb6561ed87fe.1563971855.git.leonard.crestez@nxp.com> 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-20190724_053856_381906_A5FCC05C X-CRM114-Status: GOOD ( 10.09 ) 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: Dong Aisheng , Mark Rutland , Fabio Estevam , Sascha Hauer , Jacky Bai , Anson Huang , linux-pm@vger.kernel.org, Viresh Kumar , Michael Turquette , Frank Li , NXP Linux Team , linux-kernel@vger.kernel.org, Chanwoo Choi , devicetree@vger.kernel.org, Rob Herring , Alexandre Bailon , Pengutronix Kernel Team , Shawn Guo , Georgi Djakov , linux-arm-kernel@lists.infradead.org, Abel Vesa MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP 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,imx-bus" fallback similar to exynos-bus. Signed-off-by: Leonard Crestez --- .../devicetree/bindings/devfreq/imx.yaml | 59 +++++++++++++++++++ 1 file changed, 59 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..87f90cddfd29 --- /dev/null +++ b/Documentation/devicetree/bindings/devfreq/imx.yaml @@ -0,0 +1,59 @@ +# 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: + reg: + maxItems: 1 + description: GPV area + + compatible: + contains: + enum: + - fsl,imx8m-noc + - fsl,imx8m-nic + - fsl,imx8m-ddrc + + clocks: + maxItems: 1 + +required: + - compatible + - clocks + +examples: + - | + #include + ddrc: dram-controller@3d400000 { + compatible = "fsl,imx8mm-ddrc"; + reg = <0x3d400000 0x400000>; + clocks = <&clk IMX8MM_CLK_DRAM>; + operating-points-v2 = <&ddrc_opp_table>; + }; + + - | + noc: noc@32700000 { + compatible = "fsl,imx8mm-noc"; + reg = <0x32700000 0x100000>; + clocks = <&clk IMX8MM_CLK_NOC>; + operating-points-v2 = <&noc_opp_table>; + };