From patchwork Tue Oct 28 11:26:20 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qais Yousef X-Patchwork-Id: 404192 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 8FD9F140076 for ; Tue, 28 Oct 2014 22:31:07 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754029AbaJ1L1V (ORCPT ); Tue, 28 Oct 2014 07:27:21 -0400 Received: from mailapp01.imgtec.com ([195.59.15.196]:13711 "EHLO mailapp01.imgtec.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753041AbaJ1L1U (ORCPT ); Tue, 28 Oct 2014 07:27:20 -0400 Received: from KLMAIL01.kl.imgtec.org (unknown [192.168.5.35]) by Websense Email Security Gateway with ESMTPS id 4351BEA3B29D9; Tue, 28 Oct 2014 11:27:15 +0000 (GMT) Received: from KLMAIL02.kl.imgtec.org (10.40.60.222) by KLMAIL01.kl.imgtec.org (192.168.5.35) with Microsoft SMTP Server (TLS) id 14.3.195.1; Tue, 28 Oct 2014 11:27:17 +0000 Received: from LEMAIL01.le.imgtec.org (192.168.152.62) by klmail02.kl.imgtec.org (10.40.60.222) with Microsoft SMTP Server (TLS) id 14.3.195.1; Tue, 28 Oct 2014 11:27:16 +0000 Received: from qyousef-linux.le.imgtec.org (192.168.154.94) by LEMAIL01.le.imgtec.org (192.168.152.62) with Microsoft SMTP Server (TLS) id 14.3.195.1; Tue, 28 Oct 2014 11:27:16 +0000 From: Qais Yousef To: CC: Qais Yousef , Arnd Bergmann , Greg Kroah-Hartman , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , "Kumar Gala" , , Subject: [PATCH 02/11] dt: bindings: add AXD Audio Processing IP binding document Date: Tue, 28 Oct 2014 11:26:20 +0000 Message-ID: <1414495589-8579-3-git-send-email-qais.yousef@imgtec.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1414495589-8579-1-git-send-email-qais.yousef@imgtec.com> References: <1414495589-8579-1-git-send-email-qais.yousef@imgtec.com> MIME-Version: 1.0 X-Originating-IP: [192.168.154.94] Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add device tree support for AXD Audio Processing IP Signed-off-by: Qais Yousef Cc: Arnd Bergmann Cc: Greg Kroah-Hartman Cc: Rob Herring Cc: Pawel Moll Cc: Mark Rutland Cc: Ian Campbell Cc: Kumar Gala Cc: Cc: --- Documentation/devicetree/bindings/axd.txt | 39 +++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 Documentation/devicetree/bindings/axd.txt diff --git a/Documentation/devicetree/bindings/axd.txt b/Documentation/devicetree/bindings/axd.txt new file mode 100644 index 000000000000..694fc40613fb --- /dev/null +++ b/Documentation/devicetree/bindings/axd.txt @@ -0,0 +1,39 @@ +* AXD Audio Processing IP Binding * + +Required properties: +- compatible: "img,axd" +- clocks: phandle for the clock that drives AXD. +- interrupts: the GIC interrupt where AXD is connected or software interrupt + 1 (not recommended). + +Optional properties: +- gic-irq: it takes two non-zero values, the first one is the host hwirq and + the second one is axd's. Host's hwirq should match the value in + interrupts. + If not using GIC, then axd will revert to using software interrupt 1 + which is a fallback mechanism for systems without GIC. It is + recommended to use GIC whenever possible. Some systems will only work + with GIC so this property will not be optional then. +- vpe: VPE number on which axd should start. Must be provided if axd is + running as a single VPE along Linux on the same core. + It can't be VPE0. + The VPE must be offlined by Linux before axd is loaded. +- inbuf-size: size of shared input buffers area. by default it's 0x7800 bytes. +- outbuf-size: size of shared output buffers area. by default it's 0x3c000 bytes. + + +Example: + + axdclk: axdclk@400M { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <400000000>; + }; + + axd: axd@07800000 { + compatible = "img,axd"; + clocks = <&axdclk>; + interrupts = <36 IRQ_TYPE_EDGE_RISING> + gic-irq = <36 37>; + vpe = <1>; + };