diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0424-BCM270X_DT-Declare-the-audio-PWM-pins-explicitly.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0424-BCM270X_DT-Declare-the-audio-PWM-pins-explicitly.patch | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0424-BCM270X_DT-Declare-the-audio-PWM-pins-explicitly.patch b/target/linux/brcm2708/patches-4.4/0424-BCM270X_DT-Declare-the-audio-PWM-pins-explicitly.patch new file mode 100644 index 0000000000..c0f2c39457 --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0424-BCM270X_DT-Declare-the-audio-PWM-pins-explicitly.patch @@ -0,0 +1,122 @@ +From 4a1655a918b26f5d24d04b1bb798feb39982ac78 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"; |