From 4a1655a918b26f5d24d04b1bb798feb39982ac78 Mon Sep 17 00:00:00 2001 From: Phil Elwell 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 --- 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";