linux-kernel - [PATCH 1/4] ASoC: dt-bindings: add rockchip tranceiver bindings

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Message-Id: <1438085011-16577-2-git-send-email-sjoerd.simons@collabora.co.uk>
Date:	Tue, 28 Jul 2015 14:03:28 +0200
From:	Sjoerd Simons <sjoerd.simons@...labora.co.uk>
To:	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>,
	Heiko Stuebner <heiko@...ech.de>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
	alsa-devel@...a-project.org
Subject: [PATCH 1/4] ASoC: dt-bindings: add rockchip tranceiver bindings

Add devicetree bindings for the spdif tranceiver found on
found on rk3066, rk3188 and rk3288 SoCs

Signed-off-by: Sjoerd Simons <sjoerd.simons@...labora.co.uk>
---
 .../devicetree/bindings/sound/rockchip-spdif.txt   | 41 ++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/rockchip-spdif.txt

diff --git a/Documentation/devicetree/bindings/sound/rockchip-spdif.txt b/Documentation/devicetree/bindings/sound/rockchip-spdif.txt
new file mode 100644
index 0000000..2da8a09
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/rockchip-spdif.txt
@@ -0,0 +1,41 @@
+* Rockchip SPDIF transceiver
+
+The S/PDIF audio block is a stereo transceiver that allows the
+processor to receive and transmit digital audio via an coaxial cable or
+a fibre cable.
+
+Required properties:
+
+- compatible: should be one of the following:
+   - "rockchip,rk3066-spdif": for rk3066
+   - "rockchip,rk3188-spdif", "rockchip,rk3066-spdif": for rk3188
+   - "rockchip,rk3288-spdif", "rockchip,rk3066-spdif": for rk3288
+- reg: physical base address of the controller and length of memory mapped
+  region.
+- interrupts: should contain the SPDIF interrupt.
+- #address-cells: should be 1.
+- #size-cells: should be 0.
+- dmas: DMA specifiers for tx dma. See the DMA client binding,
+  Documentation/devicetree/bindings/dma/dma.txt
+- dma-names: should be "tx"
+- clocks: a list of phandle + clock-specifier pairs, one for each entry
+  in clock-names.
+- clock-names: should contain following:
+   - "spdif_hclk": clock for SPPIF controller
+   - "spdif_clk" : clock for SPDIF bus
+
+Example for the rk3188 SPDIF controller:
+
+spdif: spdif@...011e000 {
+	compatible = "rockchip,rk3188-spdif", "rockchip,rk3066-spdif";
+	reg = <0x1011e000 0x2000>;
+	interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+	dmas = <&dmac1_s 8>;
+	dma-names = "tx";
+	clock-names = "spdif_hclk", "spdif_clk";
+	clocks = <&cru HCLK_SPDIF>, <&cru SCLK_SPDIF>;
+	status = "disabled";
+	#sound-dai-cells = <0>;
+};
-- 
2.4.6

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