From patchwork Fri Jan 13 19:03:42 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Lechner X-Patchwork-Id: 9516273 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id DED2E607D4 for ; Fri, 13 Jan 2017 19:20:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C83EA28766 for ; Fri, 13 Jan 2017 19:20:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BD17D2876D; Fri, 13 Jan 2017 19:20:23 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED, T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 3EE7F28766 for ; Fri, 13 Jan 2017 19:20:23 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1cS7Oa-0002IC-K9; Fri, 13 Jan 2017 19:20:16 +0000 Received: from casper.infradead.org ([2001:770:15f::2]) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1cS7OQ-0001Fm-AX for linux-arm-kernel@bombadil.infradead.org; Fri, 13 Jan 2017 19:20:06 +0000 Received: from vern.gendns.com ([206.190.152.46]) by casper.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1cS7CU-0002mP-I7 for linux-arm-kernel@lists.infradead.org; Fri, 13 Jan 2017 19:07:52 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lechnology.com; s=default; h=References:In-Reply-To:Message-Id:Date:Subject :Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=UCRqyo9K2PB6r2ssg9ZFOGHx1b9IeO+34wB18qvn3u8=; b=d0gna1qrvivJNHMxPiy20m//9 6+SWP0BYHrkcQSm0Q78gDXVBKypuITQGdMdBGzz7pEWW85fJjV5PqYj6IsiHpL8IBwBQO8+Q0q/B2 6ogCNRr92vqbcMC/VXrlDcD8jWabXUxZRaUBEYoc5DbHOU2RK2MN8Y7Af3evB+sFFRNbSRf0aW4zV OyCfjGAX6kaBALmSFvnFL4FFwPiRc9BVw+Zs7vmqjr8w4t9fhowsTgVO2EgmmVOsLdcZ85qZN58UW 5s5HLwvNjDC9a4UyPDte9N8FlGwuN3aOhpnUvKwmfbSqGTg6BM4iZtDw+SWwrATqWp8+UTnmWnW2m pB4FqRk5A==; Received: from 108-198-5-147.lightspeed.okcbok.sbcglobal.net ([108.198.5.147]:58908 helo=freyr.lechnology.com) by vern.gendns.com with esmtpsa (TLSv1.2:ECDHE-RSA-AES128-SHA256:128) (Exim 4.87) (envelope-from ) id 1cS78r-003LBk-Jr; Fri, 13 Jan 2017 14:04:01 -0500 From: David Lechner To: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 4/4] ARM: dts: Add LEGO MINDSTORMS EV3 dts Date: Fri, 13 Jan 2017 13:03:42 -0600 Message-Id: <1484334222-14223-5-git-send-email-david@lechnology.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1484334222-14223-1-git-send-email-david@lechnology.com> References: <1484334222-14223-1-git-send-email-david@lechnology.com> X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - vern.gendns.com X-AntiAbuse: Original Domain - lists.infradead.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - lechnology.com X-Get-Message-Sender-Via: vern.gendns.com: authenticated_id: davidmain+lechnology.com/only user confirmed/virtual account not confirmed X-Authenticated-Sender: vern.gendns.com: davidmain@lechnology.com X-Source: X-Source-Args: X-Source-Dir: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170113_190746_871352_59C95D02 X-CRM114-Status: GOOD ( 23.04 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , David Lechner , Kevin Hilman , Sekhar Nori , linux-kernel@vger.kernel.org, Rob Herring MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This adds a device tree definition file for LEGO MINDSTORMS EV3. What is working: * Pin muxing * Pinconf * GPIOs * MicroSD card reader * UART on input port 1 * Buttons * LEDs * Poweroff/reset * Flash memory * EEPROM * USB host port * USB peripheral port What is not working/to be added later: * Speaker - have patch submitted to get pwm-beeper working - maybe someday it will have a real sound driver that uses PRU * A/DC chip - have driver submitted and accepted - waiting for ack on device tree bindings * Display - waiting for "simple DRM" to be mainlined * Bluetooth - needs new driver for sequencing power/enable/clock * Input and output ports - need some sort of new phy or extcon driver as well as PRU UART and PRU I2C drivers * Battery indication - needs new power supply driver Note on flash partitions: These partitions are based on the official EV3 firmware from LEGO. It is expected that most users of the mainline kernel on EV3 will be booting from an SD card while retaining the official firmware in the flash memory. Furthermore, the official firmware uses an ancient U-Boot (2009) that has no device tree support. So, it makes sense to have this partition table in the EV3 device tree file. In the unlikely case that anyone does create their own firmware image with different partitioning, they can use a modern U-Boot in their own firmware image that modifies the device tree with the custom partitions. Signed-off-by: David Lechner --- arch/arm/boot/dts/Makefile | 3 +- arch/arm/boot/dts/da850-lego-ev3.dts | 313 +++++++++++++++++++++++++++++++++++ 2 files changed, 315 insertions(+), 1 deletion(-) create mode 100644 arch/arm/boot/dts/da850-lego-ev3.dts diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index 78a94b7..1a19e7a 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -130,7 +130,8 @@ dtb-$(CONFIG_ARCH_CLPS711X) += \ dtb-$(CONFIG_ARCH_DAVINCI) += \ da850-lcdk.dtb \ da850-enbw-cmc.dtb \ - da850-evm.dtb + da850-evm.dtb \ + da850-lego-ev3.dtb dtb-$(CONFIG_ARCH_DIGICOLOR) += \ cx92755_equinox.dtb dtb-$(CONFIG_ARCH_EFM32) += \ diff --git a/arch/arm/boot/dts/da850-lego-ev3.dts b/arch/arm/boot/dts/da850-lego-ev3.dts new file mode 100644 index 0000000..112ec92 --- /dev/null +++ b/arch/arm/boot/dts/da850-lego-ev3.dts @@ -0,0 +1,313 @@ +/* + * Device tree for LEGO MINDSTORMS EV3 + * + * Copyright (C) 2017 David Lechner + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation, version 2. + */ + +/dts-v1/; +#include +#include +#include + +#include "da850.dtsi" + +/ { + compatible = "lego,ev3", "ti,da850"; + model = "LEGO MINDSTORMS EV3"; + + aliases { + serial1 = &serial1; + }; + + memory@c0000000 { + device_type = "memory"; + reg = <0xc0000000 0x04000000>; + }; + + /* + * The buttons on the EV3 are mapped to keyboard keys. + */ + gpio_keys { + compatible = "gpio-keys"; + #address-cells = <1>; + #size-cells = <0>; + label = "EV3 Brick Buttons"; + pinctrl-names = "default"; + pinctrl-0 = <&button_pins>, <&button_bias>; + + center { + label = "Center"; + linux,code = ; + gpios = <&gpio 29 GPIO_ACTIVE_HIGH>; + }; + + left { + label = "Left"; + linux,code = ; + gpios = <&gpio 102 GPIO_ACTIVE_HIGH>; + }; + + back { + label = "Back"; + linux,code = ; + gpios = <&gpio 106 GPIO_ACTIVE_HIGH>; + }; + + right { + label = "Right"; + linux,code = ; + gpios = <&gpio 124 GPIO_ACTIVE_HIGH>; + }; + + down { + label = "Down"; + linux,code = ; + gpios = <&gpio 126 GPIO_ACTIVE_HIGH>; + }; + + up { + label = "Up"; + linux,code = ; + gpios = <&gpio 127 GPIO_ACTIVE_HIGH>; + }; + }; + + /* + * The EV3 has two built-in bi-color LEDs behind the buttons. + */ + leds { + compatible = "gpio-leds"; + pinctrl-names = "default"; + pinctrl-0 = <&led_pins>; + + left_green { + label = "led0:green:brick-status"; + /* GP6[13] */ + gpios = <&gpio 103 GPIO_ACTIVE_HIGH>; + linux,default-trigger = "default-on"; + }; + + right_red { + label = "led1:red:brick-status"; + /* GP6[7] */ + gpios = <&gpio 108 GPIO_ACTIVE_HIGH>; + linux,default-trigger = "default-on"; + }; + + left_red { + label = "led0:red:brick-status"; + /* GP6[12] */ + gpios = <&gpio 109 GPIO_ACTIVE_HIGH>; + linux,default-trigger = "default-on"; + }; + + right_green { + label = "led1:green:brick-status"; + /* GP6[14] */ + gpios = <&gpio 110 GPIO_ACTIVE_HIGH>; + linux,default-trigger = "default-on"; + }; + }; + + /* + * The EV3 is powered down by turning off the main 5V supply. + */ + gpio-poweroff { + compatible = "gpio-poweroff"; + gpios = <&gpio 107 GPIO_ACTIVE_LOW>; + pinctrl-names = "default"; + pinctrl-0 = <&system_power_pin>; + }; + + /* + * This is a 5V current limiting regulator that is shared by USB, + * the sensor (input) ports, the motor (output) ports and the A/DC. + */ + vcc5v: regulator1 { + pinctrl-names = "default"; + pinctrl-0 = <&vcc5v_pins>; + compatible = "regulator-fixed"; + regulator-name = "vcc5v"; + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <5000000>; + gpio = <&gpio 101 0>; + over-current-gpios = <&gpio 99 GPIO_ACTIVE_LOW>; + enable-active-high; + regulator-boot-on; + }; +}; + +&pmx_core { + status = "okay"; + + spi0_cs3_pin: pinmux_spi0_cs3_pin { + pinctrl-single,bits = < + /* CS3 */ + 0xc 0x01000000 0x0f000000 + >; + }; + + mmc0_cd_pin: pinmux_mmc0_cd { + pinctrl-single,bits = < + /* GP5[14] */ + 0x2C 0x00000080 0x000000f0 + >; + }; + + button_pins: pinmux_button_pins { + pinctrl-single,bits = < + /* GP1[13] */ + 0x8 0x00000800 0x00000f00 + /* GP6[10] */ + 0x34 0x00800000 0x00f00000 + /* GP6[6] */ + 0x38 0x00000080 0x000000f0 + /* GP7[12], GP7[14], GP7[15] */ + 0x40 0x00808800 0x00f0ff00 + >; + }; + + led_pins: pinmux_led_pins { + pinctrl-single,bits = < + /* GP6[12], GP6[13], GP6[14] */ + 0x34 0x00008880 0x0000fff0 + /* GP6[7] */ + 0x38 0x00000008 0x0000000f + >; + }; + + system_power_pin: pinmux_system_power { + pinctrl-single,bits = < + /* GP6[11] */ + 0x34 0x00080000 0x000f0000 + >; + }; + + vcc5v_pins: pinmux_vcc5v { + pinctrl-single,bits = < + /* GP6[5] */ + 0x40 0x00000080 0x000000f0 + /* GP6[3] */ + 0x4c 0x00008000 0x0000f000 + >; + }; +}; + +&pinconf { + status = "okay"; + + /* Buttons have external pulldown resistors */ + button_bias: button-bias-groups { + disable { + groups = "cp5", "cp24", "cp25", "cp28"; + bias-disable; + }; + }; +}; + +/* Input port 1 */ +&serial1 { + status = "okay"; + pinctrl-names = "default"; + pinctrl-0 = <&serial1_rxtx_pins>; +}; + +&rtc0 { + status = "okay"; +}; + +&i2c0 { + status = "okay"; + clock-frequency = <400000>; + pinctrl-names = "default"; + pinctrl-0 = <&i2c0_pins>; + + /* + * EEPROM contains the first stage bootloader, HW ID and Bluetooth MAC. + */ + eeprom@50 { + compatible = "microchip,24c128"; + pagesize = <64>; + read-only; + reg = <0x50>; + }; +}; + +&wdt { + status = "okay"; +}; + +&mmc0 { + status = "okay"; + max-frequency = <50000000>; + bus-width = <4>; + cd-gpios = <&gpio 94 GPIO_ACTIVE_LOW>; + pinctrl-names = "default"; + pinctrl-0 = <&mmc0_pins>, <&mmc0_cd_pin>; +}; + +&spi0 { + status = "okay"; + pinctrl-names = "default"; + pinctrl-0 = <&spi0_pins>, <&spi0_cs0_pin>, <&spi0_cs3_pin>; + + flash@0 { + compatible = "n25q128a13", "jedec,spi-nor"; + reg = <0>; + spi-max-frequency = <50000000>; + ti,spi-wdelay = <8>; + + /* Partitions are based on the official firmware from LEGO */ + partitions { + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + + partition@0 { + label = "U-Boot"; + reg = <0 0x40000>; + }; + + partition@40000 { + label = "U-Boot Env"; + reg = <0x40000 0x10000>; + }; + + partition@50000 { + label = "Kernel"; + reg = <0x50000 0x200000>; + }; + + partition@250000 { + label = "Filesystem"; + reg = <0x250000 0xa50000>; + }; + + partition@cb0000 { + label = "Storage"; + reg = <0xcb0000 0x2f0000>; + }; + }; + }; +}; + +&gpio { + status = "okay"; +}; + +&usb_phy { + status = "okay"; +}; + +&usb0 { + status = "okay"; +}; + +&usb1 { + status = "okay"; + vbus-supply = <&vcc5v>; +};