Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754120AbaJ1L1W (ORCPT ); Tue, 28 Oct 2014 07:27:22 -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 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 Content-Type: text/plain X-Originating-IP: [192.168.154.94] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@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>; + }; -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/