From patchwork Mon Nov 20 06:01:33 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chunyan Zhang X-Patchwork-Id: 10066051 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 0BFC3602B7 for ; Mon, 20 Nov 2017 06:14:14 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id ED1C52900F for ; Mon, 20 Nov 2017 06:14:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E1B8429017; Mon, 20 Nov 2017 06:14:13 +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=-4.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 74E1A29019 for ; Mon, 20 Nov 2017 06:14:13 +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:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version: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=rNZTbNMuQCsaS9kjZZkJV5TLb94h7mpkbFnrCrovXHU=; b=UUiwcNmOFGwu1y I5Ys897L3dwfVndNrBVg2z7LF3eo4aKErCsawAoLcEUOfKoYL//pm8is2B9ckE7oTgHB2DkswQgiu YnR1y/En8tnV7J9DZNc3v02wXuX0zDgcO5400kkqOkf4AjqiAs/ryFjjePMm68Y+ZNTXcyScBpp7h x7pbE1Psei36nOIOKWt2d31iZb7CUOjJ3mxuet1oChheaON1AuPpKGXtsw0y7s0nTqoMyuvo2UqXN b0LncOH70Jf/AzUo0vKtvUOtDo2Vopxd5n5YjplEqSiVcmaW8/yRtZgvgPcI05t2Tz9RnUCL9w4hd i/acqxzoavjI/J3FPvcg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1eGfLQ-000503-97; Mon, 20 Nov 2017 06:14:12 +0000 Received: from [222.66.158.135] (helo=SHSQR01.spreadtrum.com) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1eGfIr-0002ur-I7 for linux-arm-kernel@lists.infradead.org; Mon, 20 Nov 2017 06:11:41 +0000 Received: from ig2.spreadtrum.com (shmbx02.spreadtrum.com [10.0.1.204]) by SHSQR01.spreadtrum.com with ESMTP id vAK67phR060945 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=NO); Mon, 20 Nov 2017 14:07:51 +0800 (CST) (envelope-from Chunyan.Zhang@spreadtrum.com) Received: from SHCAS02.spreadtrum.com (10.0.1.202) by SHMBX02.spreadtrum.com (10.0.1.204) with Microsoft SMTP Server (TLS) id 15.0.847.32; Mon, 20 Nov 2017 14:07:58 +0800 Received: from localhost (10.0.73.143) by SHCAS02.spreadtrum.com (10.0.1.250) with Microsoft SMTP Server (TLS) id 15.0.847.32 via Frontend Transport; Mon, 20 Nov 2017 14:07:58 +0800 From: Chunyan Zhang To: Stephen Boyd , Michael Turquette , Rob Herring , Mark Rutland Subject: [PATCH V5 08/12] dt-bindings: Add Spreadtrum clock binding documentation Date: Mon, 20 Nov 2017 14:01:33 +0800 Message-ID: <20171120060137.27380-9-chunyan.zhang@spreadtrum.com> X-Mailer: git-send-email 2.12.2 In-Reply-To: <20171120060137.27380-1-chunyan.zhang@spreadtrum.com> References: <20171120060137.27380-1-chunyan.zhang@spreadtrum.com> MIME-Version: 1.0 X-MAIL: SHSQR01.spreadtrum.com vAK67phR060945 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20171119_221134_645912_C37EFA59 X-CRM114-Status: GOOD ( 11.97 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Orson Zhai , Arnd Bergmann , Catalin Marinas , Ben Li , Will Deacon , linux-kernel@vger.kernel.org, Mark Brown , Chunyan Zhang , linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Xiaolong Zhang 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 Introduce a new binding with its documentation for Spreadtrum clock sub-framework. Signed-off-by: Chunyan Zhang Acked-by: Rob Herring --- Documentation/devicetree/bindings/clock/sprd.txt | 63 ++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/sprd.txt diff --git a/Documentation/devicetree/bindings/clock/sprd.txt b/Documentation/devicetree/bindings/clock/sprd.txt new file mode 100644 index 0000000..e9d179e --- /dev/null +++ b/Documentation/devicetree/bindings/clock/sprd.txt @@ -0,0 +1,63 @@ +Spreadtrum Clock Binding +------------------------ + +Required properties: +- compatible: should contain the following compatible strings: + - "sprd,sc9860-pmu-gate" + - "sprd,sc9860-pll" + - "sprd,sc9860-ap-clk" + - "sprd,sc9860-aon-prediv" + - "sprd,sc9860-apahb-gate" + - "sprd,sc9860-aon-gate" + - "sprd,sc9860-aonsecure-clk" + - "sprd,sc9860-agcp-gate" + - "sprd,sc9860-gpu-clk" + - "sprd,sc9860-vsp-clk" + - "sprd,sc9860-vsp-gate" + - "sprd,sc9860-cam-clk" + - "sprd,sc9860-cam-gate" + - "sprd,sc9860-disp-clk" + - "sprd,sc9860-disp-gate" + - "sprd,sc9860-apapb-gate" + +- #clock-cells: must be 1 + +- clocks : Should be the input parent clock(s) phandle for the clock, this + property here just simply shows which clock group the clocks' + parents are in, since each clk node would represent many clocks + which are defined in the driver. The detailed dependency + relationship (i.e. how many parents and which are the parents) + are implemented in driver code. + +Optional properties: + +- reg: Contain the registers base address and length. It must be configured + only if no 'sprd,syscon' under the node. + +- sprd,syscon: phandle to the syscon which is in the same address area with + the clock, and so we can get regmap for the clocks from the + syscon device. + +Example: + + pmu_gate: pmu-gate { + compatible = "sprd,sc9860-pmu-gate"; + sprd,syscon = <&pmu_regs>; + clocks = <&ext_26m>; + #clock-cells = <1>; + }; + + pll: pll { + compatible = "sprd,sc9860-pll"; + sprd,syscon = <&ana_regs>; + clocks = <&pmu_gate 0>; + #clock-cells = <1>; + }; + + ap_clk: clock-controller@20000000 { + compatible = "sprd,sc9860-ap-clk"; + reg = <0 0x20000000 0 0x400>; + clocks = <&ext_26m>, <&pll 0>, + <&pmu_gate 0>; + #clock-cells = <1>; + };