From patchwork Thu Jun 30 15:58:45 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen-Yu Tsai X-Patchwork-Id: 642677 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3rgPRr1QmPz9sCp for ; Fri, 1 Jul 2016 02:01:44 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752706AbcF3P73 (ORCPT ); Thu, 30 Jun 2016 11:59:29 -0400 Received: from mirror2.csie.ntu.edu.tw ([140.112.30.76]:38130 "EHLO wens.csie.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752641AbcF3P7Z (ORCPT ); Thu, 30 Jun 2016 11:59:25 -0400 Received: by wens.csie.org (Postfix, from userid 1000) id 02D2E5F8E7; Thu, 30 Jun 2016 23:59:21 +0800 (CST) From: Chen-Yu Tsai To: Lee Jones , Alessandro Zummo , Alexandre Belloni , Rob Herring , Mark Rutland , Maxime Ripard , Michael Turquette , Stephen Boyd Cc: Chen-Yu Tsai , linux-arm-kernel@lists.infradead.org, rtc-linux@googlegroups.com, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 1/7] mfd: ac100: Add device tree bindings for X-Powers AC100 codec/RTC combo IC Date: Thu, 30 Jun 2016 23:58:45 +0800 Message-Id: <1467302331-9663-2-git-send-email-wens@csie.org> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1467302331-9663-1-git-send-email-wens@csie.org> References: <1467302331-9663-1-git-send-email-wens@csie.org> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Signed-off-by: Chen-Yu Tsai Acked-by: Rob Herring --- Changes since v3: - Fixed device node names and added labels. - Added clock output from codec and input to rtc. Changes since v2: - Fix interrupt line for ac100_codec in provided example. --- Documentation/devicetree/bindings/mfd/ac100.txt | 49 +++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/ac100.txt diff --git a/Documentation/devicetree/bindings/mfd/ac100.txt b/Documentation/devicetree/bindings/mfd/ac100.txt new file mode 100644 index 000000000000..31e6f9cc41bc --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/ac100.txt @@ -0,0 +1,49 @@ +X-Powers AC100 Codec/RTC IC device tree bindings + +AC100 is a audio codec and RTC subsystem combo IC. The 2 parts are +separated, including power supplies and interrupt lines, but share +a common register address space and host interface. + +Required properties: +- compatible: "x-powers,ac100" +- reg: The I2C slave address or RSB hardware address for the chip +- sub-nodes: + - codec + - compatible: "x-powers,ac100-codec" + - interrupt-parent: The parent interrupt controller + - interrupts: SoC NMI / GPIO interrupt connected to the IRQ_AUDIO pin + - #clock-cells: shall be 0 + - clock-output-names: "4M_adda" + - see clock/clock-bindings.txt for common clock bindings + - rtc + - compatible: "x-powers,ac100-rtc" + - interrupt-parent: The parent interrupt controller + - interrupts: SoC NMI / GPIO interrupt connected to the IRQ_RTC pin + - clocks: A phandle to the codec's "4M_adda" clock + - #clock-cells: shall be 1 + - clock-output-names: "cko1_rtc", "cko2_rtc", "cko3_rtc" + - see clock/clock-bindings.txt for common clock bindings + +Example: + +ac100: codec@e89 { + compatible = "x-powers,ac100"; + reg = <0xe89>; + + ac100_codec: codec { + compatible = "x-powers,ac100-codec"; + interrupt-parent = <&r_pio>; + interrupts = <0 9 IRQ_TYPE_LEVEL_LOW>; /* PL9 */ + #clock-cells = <0>; + clock-output-names = "4M_adda"; + }; + + ac100_rtc: rtc { + compatible = "x-powers,ac100-rtc"; + interrupt-parent = <&nmi_intc>; + interrupts = <0 IRQ_TYPE_LEVEL_LOW>; + clocks = <&ac100_codec>; + #clock-cells = <1>; + clock-output-names = "cko1_rtc", "cko2_rtc", "cko3_rtc"; + }; +};