From 33145fac8e7e9eb0e064cd0cd0032d6786b6420c Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Sun, 21 Aug 2016 15:09:59 +0000 Subject: ARM: dts: bcm283x: Add missing USB clock According to the DWC2 binding an appropriate clock is required. This clock isn't handled by bcm2835 clock driver, so add a fixed clock to the bcm283x DT. Signed-off-by: Stefan Wahren Acked-by: Stephen Warren Signed-off-by: Eric Anholt --- arch/arm/boot/dts/bcm283x.dtsi | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm/boot/dts/bcm283x.dtsi b/arch/arm/boot/dts/bcm283x.dtsi index b98252232d20..547280088299 100644 --- a/arch/arm/boot/dts/bcm283x.dtsi +++ b/arch/arm/boot/dts/bcm283x.dtsi @@ -289,6 +289,8 @@ interrupts = <1 9>; #address-cells = <1>; #size-cells = <0>; + clocks = <&clk_usb>; + clock-names = "otg"; }; v3d: v3d@7ec00000 { @@ -316,5 +318,12 @@ clock-frequency = <19200000>; }; + clk_usb: clock@4 { + compatible = "fixed-clock"; + reg = <4>; + #clock-cells = <0>; + clock-output-names = "otg"; + clock-frequency = <480000000>; + }; }; }; -- cgit From 00a33ec4649e059dfcf81d0f90402fb02db50691 Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Sun, 21 Aug 2016 15:10:00 +0000 Subject: ARM: dts: bcm283x: Add dtsi for USB host mode In case dr_mode isn't passed via DT, the dwc2 defaults to OTG mode. But all Raspberry Pi boards here are designed only for host mode. So fix this issue by providing a dtsi file which set the dr_mode to host. Signed-off-by: Stefan Wahren Acked-by: Stephen Warren Signed-off-by: Eric Anholt --- arch/arm/boot/dts/bcm2835-rpi-a-plus.dts | 1 + arch/arm/boot/dts/bcm2835-rpi-a.dts | 1 + arch/arm/boot/dts/bcm2835-rpi-b-plus.dts | 1 + arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts | 1 + arch/arm/boot/dts/bcm2835-rpi-b.dts | 1 + arch/arm/boot/dts/bcm2836-rpi-2-b.dts | 1 + arch/arm/boot/dts/bcm283x-rpi-usb-host.dtsi | 3 +++ 7 files changed, 9 insertions(+) create mode 100644 arch/arm/boot/dts/bcm283x-rpi-usb-host.dtsi diff --git a/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts b/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts index 35ff4e7a4aac..f7f9db355d98 100644 --- a/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts +++ b/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts @@ -1,6 +1,7 @@ /dts-v1/; #include "bcm2835.dtsi" #include "bcm2835-rpi.dtsi" +#include "bcm283x-rpi-usb-host.dtsi" / { compatible = "raspberrypi,model-a-plus", "brcm,bcm2835"; diff --git a/arch/arm/boot/dts/bcm2835-rpi-a.dts b/arch/arm/boot/dts/bcm2835-rpi-a.dts index 306a84ee9898..8be102f5d826 100644 --- a/arch/arm/boot/dts/bcm2835-rpi-a.dts +++ b/arch/arm/boot/dts/bcm2835-rpi-a.dts @@ -1,6 +1,7 @@ /dts-v1/; #include "bcm2835.dtsi" #include "bcm2835-rpi.dtsi" +#include "bcm283x-rpi-usb-host.dtsi" / { compatible = "raspberrypi,model-a", "brcm,bcm2835"; diff --git a/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts b/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts index d5fdb8e761a3..35cde65c975e 100644 --- a/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts +++ b/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts @@ -2,6 +2,7 @@ #include "bcm2835.dtsi" #include "bcm2835-rpi.dtsi" #include "bcm283x-rpi-smsc9514.dtsi" +#include "bcm283x-rpi-usb-host.dtsi" / { compatible = "raspberrypi,model-b-plus", "brcm,bcm2835"; diff --git a/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts b/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts index bfc4bd9b7733..84df85ea6296 100644 --- a/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts +++ b/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts @@ -2,6 +2,7 @@ #include "bcm2835.dtsi" #include "bcm2835-rpi.dtsi" #include "bcm283x-rpi-smsc9512.dtsi" +#include "bcm283x-rpi-usb-host.dtsi" / { compatible = "raspberrypi,model-b-rev2", "brcm,bcm2835"; diff --git a/arch/arm/boot/dts/bcm2835-rpi-b.dts b/arch/arm/boot/dts/bcm2835-rpi-b.dts index 0371bb7374b8..8e626a80fe24 100644 --- a/arch/arm/boot/dts/bcm2835-rpi-b.dts +++ b/arch/arm/boot/dts/bcm2835-rpi-b.dts @@ -2,6 +2,7 @@ #include "bcm2835.dtsi" #include "bcm2835-rpi.dtsi" #include "bcm283x-rpi-smsc9512.dtsi" +#include "bcm283x-rpi-usb-host.dtsi" / { compatible = "raspberrypi,model-b", "brcm,bcm2835"; diff --git a/arch/arm/boot/dts/bcm2836-rpi-2-b.dts b/arch/arm/boot/dts/bcm2836-rpi-2-b.dts index 29e1cfe8eb14..39dccf62ac96 100644 --- a/arch/arm/boot/dts/bcm2836-rpi-2-b.dts +++ b/arch/arm/boot/dts/bcm2836-rpi-2-b.dts @@ -2,6 +2,7 @@ #include "bcm2836.dtsi" #include "bcm2835-rpi.dtsi" #include "bcm283x-rpi-smsc9514.dtsi" +#include "bcm283x-rpi-usb-host.dtsi" / { compatible = "raspberrypi,2-model-b", "brcm,bcm2836"; diff --git a/arch/arm/boot/dts/bcm283x-rpi-usb-host.dtsi b/arch/arm/boot/dts/bcm283x-rpi-usb-host.dtsi new file mode 100644 index 000000000000..73f4ece8dcd0 --- /dev/null +++ b/arch/arm/boot/dts/bcm283x-rpi-usb-host.dtsi @@ -0,0 +1,3 @@ +&usb { + dr_mode = "host"; +}; -- cgit From 33fdf6fd764ed7deea87094f30d7d3dc76e154de Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Tue, 26 Jul 2016 18:53:32 +0000 Subject: DT: bindings: bcm: Add Raspberry Pi Zero Signed-off-by: Stefan Wahren Acked-by: Rob Herring Acked-by: Stephen Warren Signed-off-by: Eric Anholt --- Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt index 6ffe08778465..9c97de23919a 100644 --- a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt +++ b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt @@ -38,6 +38,10 @@ Raspberry Pi Compute Module Required root node properties: compatible = "raspberrypi,compute-module", "brcm,bcm2835"; +Raspberry Pi Zero +Required root node properties: +compatible = "raspberrypi,model-zero", "brcm,bcm2835"; + Generic BCM2835 board Required root node properties: compatible = "brcm,bcm2835"; -- cgit From c8336249c1eeca288919e3286f7dd03ae1d8ceae Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Sun, 21 Aug 2016 15:10:03 +0000 Subject: ARM: dts: bcm2835: Add Raspberry Pi Zero The Raspberry Pi Zero is a minified version of model A+. It's notable there is no PWR LED and the ACT LED is inverted. Additionally the Pi Zero is capable of the USB peripheral mode. Signed-off-by: Stefan Wahren Acked-by: Stephen Warren Signed-off-by: Eric Anholt --- arch/arm/boot/dts/Makefile | 3 ++- arch/arm/boot/dts/bcm2835-rpi-zero.dts | 40 ++++++++++++++++++++++++++++++++++ 2 files changed, 42 insertions(+), 1 deletion(-) create mode 100644 arch/arm/boot/dts/bcm2835-rpi-zero.dts diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index faacd52370d2..6576e3f000c9 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -69,7 +69,8 @@ dtb-$(CONFIG_ARCH_BCM2835) += \ bcm2835-rpi-b-rev2.dtb \ bcm2835-rpi-b-plus.dtb \ bcm2835-rpi-a-plus.dtb \ - bcm2836-rpi-2-b.dtb + bcm2836-rpi-2-b.dtb \ + bcm2835-rpi-zero.dtb dtb-$(CONFIG_ARCH_BCM_5301X) += \ bcm4708-asus-rt-ac56u.dtb \ bcm4708-asus-rt-ac68u.dtb \ diff --git a/arch/arm/boot/dts/bcm2835-rpi-zero.dts b/arch/arm/boot/dts/bcm2835-rpi-zero.dts new file mode 100644 index 000000000000..60e359fafc5b --- /dev/null +++ b/arch/arm/boot/dts/bcm2835-rpi-zero.dts @@ -0,0 +1,40 @@ +/* + * Copyright (C) 2016 Stefan Wahren + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +/dts-v1/; +#include "bcm2835.dtsi" +#include "bcm2835-rpi.dtsi" +#include "bcm283x-rpi-usb-host.dtsi" + +/ { + compatible = "raspberrypi,model-zero", "brcm,bcm2835"; + model = "Raspberry Pi Zero"; + + leds { + act { + gpios = <&gpio 47 GPIO_ACTIVE_HIGH>; + }; + }; +}; + +&gpio { + pinctrl-0 = <&gpioout &alt0 &i2s_alt0 &alt3>; + + /* I2S interface */ + i2s_alt0: i2s_alt0 { + brcm,pins = <18 19 20 21>; + brcm,function = ; + }; +}; + +&hdmi { + hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>; +}; -- cgit