From bc7fedad82deb398f440b875f54dc81f931a71e3 Mon Sep 17 00:00:00 2001 From: Florian Vaussard Date: Fri, 31 Aug 2012 18:06:11 +0200 Subject: [PATCH] ARM: dts: OMAP3: Add support for Gumstix Overo with Tobi expansion board The Gumstix Overo is a computer on module using an OMAP3 processor. This module must be plugged into an expansion board. This patch adds a first device tree support for the Overo, using the Tobi expansion board. The current support is able to boot and mount the rootfs from MMC. This patche also updates the omap3 dtb build target. Currently working: - mmc0 (on board microSD) - i2c0 and i2c2 (i2c1 not used) - led on GPIO Signed-off-by: Florian Vaussard Signed-off-by: Benoit Cousson --- arch/arm/boot/dts/omap3-overo.dtsi | 42 ++++++++++++++++++++++++++++++ arch/arm/boot/dts/omap3-tobi.dts | 35 +++++++++++++++++++++++++ arch/arm/mach-omap2/Makefile.boot | 2 +- 3 files changed, 78 insertions(+), 1 deletion(-) create mode 100644 arch/arm/boot/dts/omap3-overo.dtsi create mode 100644 arch/arm/boot/dts/omap3-tobi.dts diff --git a/arch/arm/boot/dts/omap3-overo.dtsi b/arch/arm/boot/dts/omap3-overo.dtsi new file mode 100644 index 000000000000..d6cc5e2671e7 --- /dev/null +++ b/arch/arm/boot/dts/omap3-overo.dtsi @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2012 Florian Vaussard, EPFL Mobots group + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* + * The Gumstix Overo must be combined with an expansion board. + */ +/dts-v1/; + +/include/ "omap3.dtsi" + +&i2c1 { + clock-frequency = <2600000>; + + twl: twl@48 { + reg = <0x48>; + interrupts = <7>; /* SYS_NIRQ cascaded to intc */ + interrupt-parent = <&intc>; + }; +}; + +/include/ "twl4030.dtsi" + +/* i2c2 pins are used for gpio */ +&i2c2 { + status = "disabled"; +}; + +/* on board microSD slot */ +&mmc1 { + vmmc-supply = <&vmmc1>; + bus-width = <4>; +}; + +/* optional on board WiFi */ +&mmc2 { + bus-width = <4>; +}; diff --git a/arch/arm/boot/dts/omap3-tobi.dts b/arch/arm/boot/dts/omap3-tobi.dts new file mode 100644 index 000000000000..a13d12de77ff --- /dev/null +++ b/arch/arm/boot/dts/omap3-tobi.dts @@ -0,0 +1,35 @@ +/* + * Copyright (C) 2012 Florian Vaussard, EPFL Mobots group + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* + * Tobi expansion board is manufactured by Gumstix Inc. + */ + +/include/ "omap3-overo.dtsi" + +/ { + model = "TI OMAP3 Gumstix Overo on Tobi"; + compatible = "ti,omap3-tobi", "ti,omap3-overo", "ti,omap3"; + + leds { + compatible = "gpio-leds"; + heartbeat { + label = "overo:red:gpio21"; + gpios = <&gpio1 21 0>; + linux,default-trigger = "heartbeat"; + }; + }; +}; + +&i2c3 { + clock-frequency = <100000>; +}; + +&mmc3 { + status = "disabled"; +}; diff --git a/arch/arm/mach-omap2/Makefile.boot b/arch/arm/mach-omap2/Makefile.boot index 6cf1c2d336da..18813ab1bb3c 100644 --- a/arch/arm/mach-omap2/Makefile.boot +++ b/arch/arm/mach-omap2/Makefile.boot @@ -3,7 +3,7 @@ params_phys-y := 0x80000100 initrd_phys-y := 0x80800000 dtb-$(CONFIG_SOC_OMAP2420) += omap2420-h4.dtb -dtb-$(CONFIG_ARCH_OMAP3) += omap3-beagle.dtb omap3-evm.dtb +dtb-$(CONFIG_ARCH_OMAP3) += omap3-beagle.dtb omap3-evm.dtb omap3-tobi.dtb dtb-$(CONFIG_ARCH_OMAP4) += omap4-panda.dtb omap4-pandaES.dtb dtb-$(CONFIG_ARCH_OMAP4) += omap4-var_som.dtb omap4-sdp.dtb dtb-$(CONFIG_SOC_OMAP5) += omap5-evm.dtb -- 2.34.1