mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-11-01 09:13:37 +00:00
4da722ca19
Pretty much any node can have a status property, so it doesn't need to be in examples. Converted with the following command and removed examples with SoC and board specific splits: git grep -l -E 'status.*=.*' Documentation/devicetree/ | xargs sed -i -E '/\sstatus.*=.*"(disabled|ok|okay)/d' Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Rob Herring <robh@kernel.org>
92 lines
2.5 KiB
Text
92 lines
2.5 KiB
Text
Devicetree bindings for the Axentia TSE-850 audio complex
|
|
|
|
Required properties:
|
|
- compatible: "axentia,tse850-pcm5142"
|
|
- axentia,cpu-dai: The phandle of the 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:
|
|
|
|
&ssc0 {
|
|
#sound-dai-cells = <0>;
|
|
|
|
};
|
|
|
|
&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,cpu-dai = <&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>;
|
|
};
|