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ecf040339a
In order to prevent confusing problems where pin configuration is not be applied, an upcoming change to the overlaycheck utility will add a check that all added pin groups are in some way referenced by the overlay. Before that can be done, it is necessary to ensure that all existing overlays pass that test. This patch modifies some overlays by adding the required "pinctrl-0" properties, but for others that are just setting GPIOs to inputs and outputs, where those same GPIOs are declared by <name>-gpios properties, it is better to drop the pin groups and let the GPIO subsystem set up the GPIOs as required. Removing this duplication may be helpful in the future should we ever decide to enable the exclusive GPIO vs pinctrl locking (.strict in struct pinmux_ops). See: https://forums.raspberrypi.com/viewtopic.php?t=393742 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
125 lines
3.3 KiB
Plaintext
125 lines
3.3 KiB
Plaintext
#include <dt-bindings/clock/bcm2835.h>
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/*
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* Device tree overlay for the Universal Digital Radio Controller
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*/
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/dts-v1/;
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/plugin/;
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/ {
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compatible = "brcm,bcm2835";
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fragment@0 {
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target = <&i2s_clk_producer>;
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__overlay__ {
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clocks = <&clocks BCM2835_CLOCK_PCM>;
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clock-names = "pcm";
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status = "okay";
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};
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};
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fragment@1 {
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target-path = "/";
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__overlay__ {
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regulators {
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compatible = "simple-bus";
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#address-cells = <1>;
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#size-cells = <0>;
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udrc0_ldoin: udrc0_ldoin {
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compatible = "regulator-fixed";
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regulator-name = "ldoin";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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};
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};
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};
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};
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fragment@2 {
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target = <&i2c1>;
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__overlay__ {
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#address-cells = <1>;
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#size-cells = <0>;
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status = "okay";
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clocks = <&clocks BCM2835_CLOCK_VPU>;
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clock-frequency = <400000>;
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tlv320aic32x4: tlv320aic32x4@18 {
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compatible = "ti,tlv320aic32x4";
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#sound-dai-cells = <0>;
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reg = <0x18>;
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status = "okay";
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clocks = <&clocks BCM2835_CLOCK_GP0>;
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clock-names = "mclk";
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assigned-clocks = <&clocks BCM2835_CLOCK_GP0>;
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assigned-clock-rates = <25000000>;
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pinctrl-names = "default";
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pinctrl-0 = <&gpclk0_pin &aic3204_reset>;
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reset-gpios = <&gpio 13 0>;
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iov-supply = <&udrc0_ldoin>;
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ldoin-supply = <&udrc0_ldoin>;
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};
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};
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};
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fragment@3 {
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target = <&sound>;
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snd: __overlay__ {
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compatible = "simple-audio-card";
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i2s-controller = <&i2s_clk_producer>;
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status = "okay";
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simple-audio-card,name = "udrc";
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simple-audio-card,format = "i2s";
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simple-audio-card,bitclock-master = <&dailink0_master>;
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simple-audio-card,frame-master = <&dailink0_master>;
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simple-audio-card,widgets =
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"Line", "Line In",
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"Line", "Line Out";
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simple-audio-card,routing =
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"IN1_R", "Line In",
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"IN1_L", "Line In",
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"CM_L", "Line In",
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"CM_R", "Line In",
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"Line Out", "LOR",
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"Line Out", "LOL";
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dailink0_master: simple-audio-card,cpu {
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sound-dai = <&i2s_clk_producer>;
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};
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simple-audio-card,codec {
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sound-dai = <&tlv320aic32x4>;
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};
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};
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};
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fragment@4 {
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target = <&gpio>;
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__overlay__ {
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gpclk0_pin: gpclk0_pin {
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brcm,pins = <4>;
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brcm,function = <4>;
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};
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aic3204_reset: aic3204_reset {
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brcm,pins = <13>;
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brcm,function = <1>;
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brcm,pull = <1>;
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};
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};
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};
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__overrides__ {
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alsaname = <&snd>, "simple-audio-card,name";
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};
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};
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