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" +- 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@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>; + };