The TSE-850 is an FM Transmitter Station Equipment, designed to generate
baseband signals for FM, mainly the DARC subcarrier, but other signals
are also possible.
Signed-off-by: Peter Rosin <p...@axentia.se>
---
.../bindings/sound/axentia,tse850-pcm5142.txt | 88 ++++++++++++++++++++++
MAINTAINERS | 6 ++
2 files changed, 94 insertions(+)
create mode 100644
Documentation/devicetree/bindings/sound/axentia,tse850-pcm5142.txt
diff --git a/Documentation/devicetree/bindings/sound/axentia,tse850-pcm5142.txt
b/Documentation/devicetree/bindings/sound/axentia,tse850-pcm5142.txt
new file mode 100644
index 000000000000..0c2d44fda17e
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/axentia,tse850-pcm5142.txt
@@ -0,0 +1,88 @@
+ASoC driver for the Axentia TSE-850 with a PCM5142 codec
+
+Required properties:
+ - compatible: "axentia,tse850-pcm5142"
+ - axentia,ssc-controller: The phandle of the atmel SSC controller used as
+ cpu dai.
+ - axentia,audio-codec: The phandle of the PCM5142 codec.
+ - axentia,add-gpios: gpio specifier that controls the mixer.
+ - axentia,loop1-gpios: gpio specifier that controls loop relays on channel 1.
+ - axentia,loop2-gpios: gpio specifier that controls loop relays on channel 2.
+ - axentia,ana-supply: Regulator that supplies the output amplifier. Must
+ support voltages in the 2V - 20V range, in 1V steps.
+
+The schematics explaining the gpios are as follows:
+
+ loop1 relays
+ IN1 +---o +------------+ o---+ OUT1
+ \ /
+ + +
+ | / |
+ +--o +--. |
+ | add | |
+ | V |
+ | .---. |
+ DAC +----------->|Sum|---+
+ | '---' |
+ | |
+ + +
+
+ IN2 +---o--+------------+--o---+ OUT2
+ loop2 relays
+
+The 'loop1' gpio pin controlls two relays, which are either in loop position,
+meaning that input and output are directly connected, or they are in mixer
+position, meaning that the signal is passed through the 'Sum' mixer. Similarly
+for 'loop2'.
+
+In the above, the 'loop1' relays are inactive, thus feeding IN1 to the mixer
+(if 'add' is active) and feeding the mixer output to OUT1. The 'loop2' relays
+are active, short-cutting the TSE-850 from channel 2. IN1, IN2, OUT1 and OUT2
+are TSE-850 connectors and DAC is the PCB name of the (filtered) output from
+the PCM5142 codec.
+
+Example:
+
+ &i2c {
+ codec: pcm5142@4c {
+ compatible = "ti,pcm5142";
+
+ reg = <0x4c>;
+
+ AVDD-supply = <®_3v3>;
+ DVDD-supply = <®_3v3>;
+ CPVDD-supply = <®_3v3>;
+
+ clocks = <&sck>;
+
+ pll-in = <3>;
+ pll-out = <6>;
+ };
+ };
+
+ ana: ana-reg {
+ compatible = "pwm-regulator";
+
+ regulator-name = "ANA";
+
+ pwms = <&pwm0 2 1000 PWM_POLARITY_INVERTED>;
+ pwm-dutycycle-unit = <1000>;
+ pwm-dutycycle-range = <100 1000>;
+
+ regulator-min-microvolt = <2000000>;
+ regulator-max-microvolt = <20000000>;
+ regulator-ramp-delay = <1000>;
+ };
+
+ sound {
+ compatible = "axentia,tse850-pcm5142";
+
+ axentia,ssc-controller = <&ssc0>;
+ axentia,audio-codec = <&codec>;
+
+ axentia,add-gpios = <&pioA 8 GPIO_ACTIVE_LOW>;
+ axentia,loop1-gpios = <&pioA 10 GPIO_ACTIVE_LOW>;
+ axentia,loop2-gpios = <&pioA 11 GPIO_ACTIVE_LOW>;
+
+ axentia,ana-supply = <&ana>;
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 539b20baf791..4f2ebf3ab51a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2318,6 +2318,12 @@ F: include/uapi/linux/ax25.h
F: include/net/ax25.h
F: net/ax25/
+AXENTIA ASOC DRIVERS
+M: Peter Rosin <p...@axentia.se>
+L: alsa-de...@alsa-project.org (moderated for non-subscribers)
+S: Maintained
+F: Documentation/devicetree/bindings/sound/axentia,*
+
AZ6007 DVB DRIVER
M: Mauro Carvalho Chehab <mche...@s-opensource.com>
M: Mauro Carvalho Chehab <mche...@kernel.org>
--
2.1.4
