arm64: dts: imx8mn: Add support for micfil

The i.MX8M Nano has supports the MICFIL digital interface.
It's a 16-bit audio signal from a PDM microphone bitstream.
The driver is already in the kernel, but the node is missing.

Add the micfil node.

Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
index bc80b02..2087fe8 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
@@ -318,6 +318,25 @@
                                        status = "disabled";
                                };
 
+                               micfil: audio-controller@30080000 {
+                                       compatible = "fsl,imx8mm-micfil";
+                                       reg = <0x30080000 0x10000>;
+                                       interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
+                                                    <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>,
+                                                    <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>,
+                                                    <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
+                                       clocks = <&clk IMX8MN_CLK_PDM_IPG>,
+                                                <&clk IMX8MN_CLK_PDM_ROOT>,
+                                                <&clk IMX8MN_AUDIO_PLL1_OUT>,
+                                                <&clk IMX8MN_AUDIO_PLL2_OUT>,
+                                                <&clk IMX8MN_CLK_EXT3>;
+                                       clock-names = "ipg_clk", "ipg_clk_app",
+                                                     "pll8k", "pll11k", "clkext3";
+                                       dmas = <&sdma2 24 25 0x80000000>;
+                                       dma-names = "rx";
+                                       status = "disabled";
+                               };
+
                                sai7: sai@300b0000 {
                                        compatible = "fsl,imx8mm-sai", "fsl,imx8mq-sai";
                                        reg = <0x300b0000 0x10000>;