On Mon, Aug 24, 2015 at 01:39:11PM +0100, Qais Yousef wrote:
Signed-off-by: Qais Yousef qais.yousef@imgtec.com Cc: Rob Herring robh+dt@kernel.org Cc: Pawel Moll pawel.moll@arm.com Cc: Mark Rutland mark.rutland@arm.com Cc: Ian Campbell ijc+devicetree@hellion.org.uk Cc: Kumar Gala galak@codeaurora.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.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"
This sounds awfully generic. Is there not a more complete name?
+- 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 ininterrupts.
I don't understand what this gic-irq property is for; and it generally doesn't look right.
Could you please describe what this is and why you thing it is necessary?
+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.
Likewise could you please elaborate on this is?
What is a VPE number? What does it mean to start at that number?
+- 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.
Is this something the kernel dynamically allocates? Why does this need to be in the DT?
Thanks, Mark.
+Example:
- axdclk: axdclk@400M {
#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