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Message-ID: <1440419959-14315-3-git-send-email-qais.yousef@imgtec.com>
Date: Mon, 24 Aug 2015 13:39:11 +0100
From: Qais Yousef <qais.yousef@...tec.com>
To: <alsa-devel@...a-project.org>
CC: Qais Yousef <qais.yousef@...tec.com>,
Rob Herring <robh+dt@...nel.org>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
"Ian Campbell" <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 02/10] dt: add img,axd.txt device tree binding document
Signed-off-by: Qais Yousef <qais.yousef@...tec.com>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: Pawel Moll <pawel.moll@....com>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Ian Campbell <ijc+devicetree@...lion.org.uk>
Cc: Kumar Gala <galak@...eaurora.org>
Cc: devicetree@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
---
.../devicetree/bindings/sound/img,axd.txt | 34 ++++++++++++++++++++++
1 file changed, 34 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/img,axd.txt
diff --git a/Documentation/devicetree/bindings/sound/img,axd.txt b/Documentation/devicetree/bindings/sound/img,axd.txt
new file mode 100644
index 000000000000..6a8764a79d01
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/img,axd.txt
@@ -0,0 +1,34 @@
+* 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
+- 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.
+
+Optional properties:
+- 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 will be offlined 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@...M {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <400000000>;
+ };
+
+ axd {
+ compatible = "img,axd";
+ clocks = <&axdclk>;
+ interrupts = <36 IRQ_TYPE_EDGE_RISING>;
+ gic-irq = <36 37>;
+ vpe = <1>;
+ };
--
2.1.0
--
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