ASoC: dt-bindings: stm32: dfsdm: remove stm32-adfsdm.txt binding

Device tree audio configuration for STM32 DFSDM is already
covered in the following binding:
Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml
Remove stm32-adfsdm.txt obsolete binding.

Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201020155709.2621-3-olivier.moysan@st.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/Documentation/devicetree/bindings/sound/st,stm32-adfsdm.txt b/Documentation/devicetree/bindings/sound/st,stm32-adfsdm.txt
deleted file mode 100644 (file)
index 864f5b0..0000000
--- a/Documentation/devicetree/bindings/sound/st,stm32-adfsdm.txt
+++ /dev/null
@@ -1,63 +0,0 @@
-STMicroelectronics Audio Digital Filter Sigma Delta modulators(DFSDM)
-
-The DFSDM allows PDM microphones capture through SPI interface. The Audio
-interface is seems as a sub block of the DFSDM device.
-For details on DFSDM bindings refer to ../iio/adc/st,stm32-dfsdm-adc.txt
-
-Required properties:
-  - compatible: "st,stm32h7-dfsdm-dai".
-
-  - #sound-dai-cells : Must be equal to 0
-
-  - io-channels : phandle to iio dfsdm instance node.
-
-Example of a sound card using audio DFSDM node.
-
-       sound_card {
-               compatible = "audio-graph-card";
-
-               dais = <&cpu_port>;
-       };
-
-       dfsdm: dfsdm@40017000 {
-               compatible = "st,stm32h7-dfsdm";
-               reg = <0x40017000 0x400>;
-               clocks = <&rcc DFSDM1_CK>;
-               clock-names = "dfsdm";
-               #interrupt-cells = <1>;
-               #address-cells = <1>;
-               #size-cells = <0>;
-
-               dfsdm_adc0: filter@0 {
-                       compatible = "st,stm32-dfsdm-dmic";
-                       reg = <0>;
-                       interrupts = <110>;
-                       dmas = <&dmamux1 101 0x400 0x00>;
-                       dma-names = "rx";
-                       st,adc-channels = <1>;
-                       st,adc-channel-names = "dmic0";
-                       st,adc-channel-types = "SPI_R";
-                       st,adc-channel-clk-src = "CLKOUT";
-                       st,filter-order = <5>;
-
-                       dfsdm_dai0: dfsdm-dai {
-                               compatible = "st,stm32h7-dfsdm-dai";
-                               #sound-dai-cells = <0>;
-                               io-channels = <&dfsdm_adc0 0>;
-                               cpu_port: port {
-                               dfsdm_endpoint: endpoint {
-                                       remote-endpoint = <&dmic0_endpoint>;
-                               };
-                       };
-               };
-       };
-
-       dmic0: dmic@0 {
-               compatible = "dmic-codec";
-               #sound-dai-cells = <0>;
-               port {
-                       dmic0_endpoint: endpoint {
-                               remote-endpoint = <&dfsdm_endpoint>;
-                       };
-               };
-       };