linux-kernel - [PATCH v2 03/10] dt-bindings: sound: Add new reset compatible for sun4i-i2s

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Message-Id: <20170117140230.23142-4-mylene.josserand@free-electrons.com>
Date:   Tue, 17 Jan 2017 15:02:23 +0100
From:   Mylène Josserand 
        <mylene.josserand@...e-electrons.com>
To:     lgirdwood@...il.com, broonie@...nel.org, perex@...ex.cz,
        tiwai@...e.com, maxime.ripard@...e-electrons.com, wens@...e.org,
        mturquette@...libre.com, sboyd@...eaurora.org,
        mark.rutland@....com, robh+dt@...nel.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-clk@...r.kernel.org, alsa-devel@...a-project.org,
        devicetree@...r.kernel.org, linux-sunxi@...glegroups.com,
        thomas.petazzoni@...e-electrons.com,
        mylene.josserand@...e-electrons.com,
        alexandre.belloni@...e-electrons.com
Subject: [PATCH v2 03/10] dt-bindings: sound: Add new reset compatible for sun4i-i2s

Add a new compatible for sun4i-i2s driver to handle some
SoCs that have a reset line that must be asserted/deasserted.

This new compatible, "allwinner,sun6i-a31-i2s", requires two
properties:
	- resets: phandle to the reset line
	- reset-names: the name of the reset line ("rst").
Except these differences, the compatible is identical to previous one
which will not handle a reset line.

Signed-off-by: Mylène Josserand <mylene.josserand@...e-electrons.com>
---
 .../devicetree/bindings/sound/sun4i-i2s.txt        | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/sun4i-i2s.txt b/Documentation/devicetree/bindings/sound/sun4i-i2s.txt
index 7a2c0945fd22..f673206e309b 100644
--- a/Documentation/devicetree/bindings/sound/sun4i-i2s.txt
+++ b/Documentation/devicetree/bindings/sound/sun4i-i2s.txt
@@ -7,6 +7,7 @@ Required properties:
 
 - compatible: should be one of the following:
    - "allwinner,sun4i-a10-i2s"
+   - "allwinner,sun6i-a31-i2s" for controller with reset lines
 - reg: physical base address of the controller and length of memory mapped
   region.
 - interrupts: should contain the I2S interrupt.
@@ -19,7 +20,13 @@ Required properties:
    - "mod" : module clock for the I2S controller
 - #sound-dai-cells : Must be equal to 0
 
+Required properties for the following compatibles:
+		- "allwinner,sun6i-a31-i2s"
+- resets: phandle to the reset line for this codec
+- reset-names: Contains the reset signal name "rst"
+
 Example:
+For "allwinner,sun4i-a10-i2s":
 
 i2s0: i2s@...22400 {
 	#sound-dai-cells = <0>;
@@ -32,3 +39,19 @@ i2s0: i2s@...22400 {
 	       <&dma SUN4I_DMA_NORMAL 3>;
 	dma-names = "rx", "tx";
 };
+
+For "allwinner,sun6i-a31-i2s":
+
+dai: dai@...22c00 {
+	#sound-dai-cells = <0>;
+	compatible = "allwinner,sun6i-a31-i2s";
+	reg = <0x01c22c00 0x200>;
+	interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
+	clocks = <&ccu CLK_BUS_CODEC>, <&ccu CLK_AC_DIG>;
+	clock-names = "apb", "mod";
+	resets = <&ccu RST_BUS_CODEC>;
+	reset-names = "rst";
+	dmas = <&dma 15>, /* AUDIO_CODEC port */
+		<&dma 15>; /* AUDIO_CODEC port */
+	dma-names = "rx", "tx";
+};
-- 
2.11.0