[PATCH 0/2] ASoC: atmel-pdmic: add driver for Atmel PDMIC

[PATCH 0/2] ASoC: atmel-pdmic: add driver for Atmel PDMIC

[Songjun Wu]

The Pulse Density Modulation Inteface Controller driver
includes two parts.
1) Driver code to implement the PDMIC function.
2) Device tree binding documentation, it describes how to add
   the PDMIC in device tree.


Songjun Wu (2):
  ASoC: atmel-pdmic: add the Pulse Density Modulation Interface
    Controller
  ASoC: atmel-pdmic: DT binding for PDMIC driver

 .../devicetree/bindings/sound/atmel-pdmic.txt      |   55 ++
 sound/soc/atmel/Kconfig                            |    9 +
 sound/soc/atmel/Makefile                           |    2 +
 sound/soc/atmel/atmel-pdmic.c                      |  745 ++++++++++++++++++++
 sound/soc/atmel/atmel-pdmic.h                      |   80 +++
 5 files changed, 891 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/atmel-pdmic.txt
 create mode 100644 sound/soc/atmel/atmel-pdmic.c
 create mode 100644 sound/soc/atmel/atmel-pdmic.h

-- 
1.7.9.5

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[PATCH 2/2] ASoC: atmel-pdmic: DT binding for PDMIC driver

[Songjun Wu]

DT binding documentation for this new ASoC driver.

Signed-off-by: Songjun Wu <songjun.wu@atmel.com>
---

 .../devicetree/bindings/sound/atmel-pdmic.txt      |   55 ++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/atmel-pdmic.txt

diff --git a/Documentation/devicetree/bindings/sound/atmel-pdmic.txt b/Documentation/devicetree/bindings/sound/atmel-pdmic.txt
new file mode 100644
index 0000000..e0875f1
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/atmel-pdmic.txt
@@ -0,0 +1,55 @@
+* Atmel PDMIC driver under ALSA SoC architecture
+
+Required properties:
+- compatible
+	Should be "atmel,sama5d2-pdmic".
+- reg
+	Should contain PDMIC registers location and length.
+- interrupts
+	Should contain the IRQ line for the PDMIC.
+- dmas
+	One DMA specifiers as described in atmel-dma.txt and dma.txt files.
+- dma-names
+	Must be "rx".
+- clock-names
+	Required elements:
+	- "pclk"	peripheral clock
+	- "gclk"	generated clock
+- clocks
+	Must contain an entry for each required entry in clock-names.
+	Please refer to clock-bindings.txt.
+- atmel,mic-min-freq
+	The minimal frequency that the micphone supports.
+- atmel,mic-max-freq
+	The maximal frequency that the micphone supports.
+
+Optional properties:
+- pinctrl-names, pinctrl-0
+	Please refer to pinctrl-bindings.txt.
+- atmel,model
+	The user-visible name of this sound card.
+	The default value is "PDMIC".
+- atmel,mic-offset
+	The offset that should be added.
+	The range is from -32768 to 32767.
+	The default value is 0.
+
+Example:
+	pdmic@f8018000 {
+				compatible = "atmel,sama5d2-pdmic";
+				reg = <0xf8018000 0x124>;
+				interrupts = <48 IRQ_TYPE_LEVEL_HIGH 7>;
+				dmas = <&dma0
+					(AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
+					| AT91_XDMAC_DT_PERID(50))>;
+				dma-names = "rx";
+				clocks = <&pdmic_clk>, <&pdmic_gclk>;
+				clock-names = "pclk", "gclk";
+
+				pinctrl-names = "default";
+				pinctrl-0 = <&pinctrl_pdmic_default>;
+				atmel,model = "PDMIC @ sama5d2_xplained";
+				atmel,mic-min-freq = <1000000>;
+				atmel,mic-max-freq = <3246000>;
+				atmel,mic-offset = <0x0>;
+	};
-- 
1.7.9.5