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2023-06-21ARM: dts: Move .dts files to vendor sub-directoriesRob Herring1-466/+0
The arm dts directory has grown to 1559 boards which makes it a bit unwieldy to maintain and use. Past attempts stalled out due to plans to move .dts files out of the kernel tree. Doing that is no longer planned (any time soon at least), so let's go ahead and group .dts files by vendors. This move aligns arm with arm64 .dts file structure. There's no change to dtbs_install as the flat structure is maintained on install. The naming of vendor directories is roughly in this order of preference: - Matching original and current SoC vendor prefix/name (e.g. ti, qcom) - Current vendor prefix/name if still actively sold (SoCs which have been aquired) (e.g. nxp/imx) - Existing platform name for older platforms not sold/maintained by any company (e.g. gemini, nspire) The whole move was scripted with the exception of MAINTAINERS and a few makefile fixups. Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Michal Simek <michal.simek@amd.com> #Xilinx Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Acked-by: Neil Armstrong <neil.armstrong@linaro.org> Acked-by: Paul Barker <paul.barker@sancloud.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Wei Xu <xuwei5@hisilicon.com> #hisilicon Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Nick Hawkins <nick.hawkins@hpe.com> Acked-by: Baruch Siach <baruch@tkos.co.il> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Andre Przywara <andre.przywara@arm.com> Acked-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com> Acked-by: Peter Rosin <peda@axentia.se> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> #broadcom Acked-by: Manivannan Sadhasivam <mani@kernel.org> Reviewed-by: Jisheng Zhang <jszhang@kernel.org> Acked-by: Patrice Chotard <patrice.chotard@foss.st.com> Acked-by: Romain Perier <romain.perier@gmail.com> Acked-by: Alexandre TORGUE <alexandre.torgue@st.com> Acked-by: Shawn Guo <shawnguo@kernel.org> Acked-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> Acked-by: Enric Balletbo i Serra <eballetbo@gmail.com> Signed-off-by: Rob Herring <robh@kernel.org>
2019-06-25Merge tag 'davinci-for-v5.3/dt' of ↵Olof Johansson1-0/+30
git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into arm/dt This pull request adds CPUFreq support for DA850 boards in device-tree boot using the generic CPUFREQ_DT driver. * tag 'davinci-for-v5.3/dt' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci: ARM: davinci_all_defconfig: Enable CPUFREQ_DT ARM: dts: da850-evm: enable cpufreq ARM: dts: da850-lcdk: enable cpufreq ARM: dts: da850-lego-ev3: enable cpufreq ARM: dts: da850: add cpu node and operating points to DT Signed-off-by: Olof Johansson <olof@lixom.net>
2019-06-14ARM: dts: da850-lego-ev3: enable cpufreqDavid Lechner1-0/+30
Add a fixed regulator for the LEGO EV3 board along with board-specific CPU configuration. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372Thomas Gleixner1-4/+1
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 135 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531081036.435762997@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-04ARM: dts: da850-lego-ev3: slow down A/DC as much as possibleDavid Lechner1-1/+2
Due to the electrical design of the A/DC circuits on LEGO MINDSTORMS EV3, if we are reading analog values as fast as possible (i.e. using DMA to service the SPI) the A/DC chip will read incorrect values - as much as 0.1V off when the SPI is running at 10MHz. (This has to do with the capacitor charge time when channels are muxed in the A/DC.) This patch slows down the SPI as much as possible (if CPU is at 456MHz, SPI runs at 1/2 of that, so 228MHz and has a max prescalar of 256, so we could get ~891kHz, but we're just rounding it to 1MHz). We also use the max allowable value for WDELAY to slow things down even more. These changes reduce the error of the analog values to about 5mV, which is tolerable. Commits a3762b13a596 ("spi: spi-davinci: Add support for SPI_CS_WORD") and e2540da86ef8 ("iio: adc: ti-ads7950: use SPI_CS_WORD to reduce CPU usage") introduce changes that allow DMA transfers to be used, so this slow down is needed now. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2018-06-27ARM: dts: da850-lego-ev3: Add Bluetooth nodesDavid Lechner1-0/+82
This adds nodes for describing the Bluetooth chip and connections on LEGO MINDSTORMS EV3 to da850-lego-ev3.dts. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2018-06-26ARM: dts: da850: Add clocksDavid Lechner1-0/+4
This adds clock provider nodes for da850 and wires them up to all of the devices. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2018-05-14ARM: dts: da850-lego-ev3: remove unnecessary gpio-keys propertiesDavid Lechner1-2/+0
This removes the #address-cells and #size-cells properties from the gpio-keys node in the da850-lego-ev3 device tree. These properties are not needed since the child nodes don't have a reg property. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2018-04-16ARM: dts: da850: use gpio-rangesDavid Lechner1-77/+4
This makes use of the gpio-ranges feature that connects GPIO controllers and PINMUX controllers. In da850.dtsi, pinctrl-single,gpio-range is added to the pinmux node and gpio-ranges is added to the GPIO node. Unfortunately, the way the pinctrl-single driver enumerates the pins (starting with LSB) causes them to be in reverse order compared to the way the gpios are assigned. As a result, we have to declare the mapping for each GPIO individually. This also lets us remove all of the GPIO pinmuxes from da850-lego-ev3.dts. (Other da850 boards do not currently have any GPIO pinmuxes declared.) Acked-by: Linus Walleij <linus.wallei@linaro.org> Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2018-02-26ARM: dts: da850-lego-ev3: use a correct fallback for at24 compatibleBartosz Golaszewski1-1/+1
We now require all at24 users to use the "atmel,<model>" fallback in device tree for different manufacturers. Reviewed-by: David Lechner <david@lechnology.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2018-02-23ARM: dts: da850-lego-ev3: Add node for reboot modesDavid Lechner1-0/+17
This adds a new node for reboot modes on LEGO MINDSTORMS EV3. The EV3's bootloader looks for a magic number in the ARM local RAM and if found, it will boot into a special firmware update mode where the flash memory can be written via USB. This has been testing working using the command: # systemctl reboot loader Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2017-12-07ARM: dts: da850-lego-ev3: Fix battery voltage gpioDavid Lechner1-2/+2
This fixes the battery voltage monitoring gpio-hog settings. When the gpio is low, it turns off the battery voltage to the ADC chip. However, this needs to be on all of the time so that we can monitor battery voltage. Also, there was a typo that prevented pinmuxing from working correctly. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2017-08-21ARM: dts: da850-lego-ev3: Add node for LCD displayDavid Lechner1-0/+24
This adds a new node for the LEGO MINDSTORMS EV3 LCD display. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2017-05-17ARM: dts: da850-lego-ev3: Add node for LEGO MINDSTORMS EV3 BatteryDavid Lechner1-0/+28
This adds a new node to the LEGO MINDSTORMS EV3 device tree for the battery. Signed-off-by: David Lechner <david@lechnology.com> [nsekhar@ti.com: minor headline fix] Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2017-03-30ARM: dts: da850: move spi0_cs3_pin pinconf nodeDavid Lechner1-7/+0
This moves the spi0_cs3_pin pinconf node from the LEGO EV3 file to the common DA850 include file. This node is applicable to any board, and therefore belongs in the common file. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2017-03-07ARM: da850-lego-ev3: Add device tree node for soundDavid Lechner1-0/+31
This adds a device tree node for sound on LEGO MINDSTORMS EV3. The EV3 uses one of the SoC PWMs connected to an amplifier to create sound from a speaker. The PWM is passed through a low-pass filter, so it is actually possible to do PCM playback, but there is no existing driver, so just using pwm-beeper for now, since it is also a compatible mode of operation. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2017-03-07ARM: da850-lego-ev3: Add device tree node for A/DCDavid Lechner1-0/+21
This adds a node for the TI ADS7957 analog/digital converter on LEGO MINDSTORMS EV3 as well as a regulator node that is used by the A/DC node. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2017-01-20ARM: dts: Add LEGO MINDSTORMS EV3 dtsDavid Lechner1-0/+313
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 <david@lechnology.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>