1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
From b7ed9ed6bebe864e6a52f25e82c337448d1e44fc Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Mon, 20 Jun 2016 13:21:26 +0100
Subject: [PATCH] BCM270X_DT: Declare the audio PWM pins explicitly
Make the audio driver's use of the PWM functions explicit. Overlays
that want to use the PWM functionality for other purposes must
disable the audio node.
See: https://github.com/raspberrypi/linux/issues/1473
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
arch/arm/boot/dts/bcm2708-rpi-b-plus.dts | 10 ++++++++++
arch/arm/boot/dts/bcm2708-rpi-b.dts | 9 +++++++++
arch/arm/boot/dts/bcm2709-rpi-2-b.dts | 10 ++++++++++
arch/arm/boot/dts/bcm2710-rpi-3-b.dts | 10 ++++++++++
4 files changed, 39 insertions(+)
--- a/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
+++ b/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
@@ -37,6 +37,11 @@
brcm,pins = <18 19 20 21>;
brcm,function = <4>; /* alt0 */
};
+
+ audio_pins: audio_pins {
+ brcm,pins = <40 45>;
+ brcm,function = <4>;
+ };
};
&sdhost {
@@ -120,6 +125,11 @@
hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
};
+&audio {
+ pinctrl-names = "default";
+ pinctrl-0 = <&audio_pins>;
+};
+
/ {
__overrides__ {
uart0 = <&uart0>,"status";
--- a/arch/arm/boot/dts/bcm2708-rpi-b.dts
+++ b/arch/arm/boot/dts/bcm2708-rpi-b.dts
@@ -36,6 +36,10 @@
i2s_pins: i2s {
brcm,pins = <28 29 30 31>;
brcm,function = <6>; /* alt2 */
+
+ audio_pins: audio_pins {
+ brcm,pins = <40 45>;
+ brcm,function = <4>;
};
};
@@ -114,6 +118,11 @@
hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
};
+&audio {
+ pinctrl-names = "default";
+ pinctrl-0 = <&audio_pins>;
+};
+
/ {
__overrides__ {
uart0 = <&uart0>,"status";
--- a/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
+++ b/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
@@ -37,6 +37,11 @@
brcm,pins = <18 19 20 21>;
brcm,function = <4>; /* alt0 */
};
+
+ audio_pins: audio_pins {
+ brcm,pins = <40 45>;
+ brcm,function = <4>;
+ };
};
&sdhost {
@@ -120,6 +125,11 @@
hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
};
+&audio {
+ pinctrl-names = "default";
+ pinctrl-0 = <&audio_pins>;
+};
+
/ {
__overrides__ {
uart0 = <&uart0>,"status";
--- a/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
+++ b/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
@@ -61,6 +61,11 @@
brcm,function;
brcm,pull;
};
+
+ audio_pins: audio_pins {
+ brcm,pins = <40 41>;
+ brcm,function = <4>;
+ };
};
&sdhost {
@@ -165,6 +170,11 @@
hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
};
+&audio {
+ pinctrl-names = "default";
+ pinctrl-0 = <&audio_pins>;
+};
+
/ {
chosen {
bootargs = "8250.nr_uarts=1";
|
