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path: root/arch/arm/include/asm/arch-bcm2835
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2014-02-14ARM: bcm2835: fix mbox POWER_STATE_RESP_ON valueStephen Warren
Typo: The correct value is 1 not 2. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2014-01-20ARM: rpi_b: power on SDHCI and USB HW modulesStephen Warren
Send RPC commands to the VideoCore to turn on the SDHCI and USB modules. For SDHCI this isn't needed in practice, since the firmware already turned on the power in order to load U-Boot. However, it's best to be explicit. For USB, this is necessary, since the module isn't powered otherwise. This will allow the kernel USB driver to work. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2013-11-12ARM: bcm2835: add missing mbox overscan response fieldAndre Heider
Add the missing "right" field to struct bcm2835_mbox_tag_overscan. Signed-off-by: Andre Heider <a.heider@gmail.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
2013-07-24Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
2013-04-04ARM: bcm2835: fix get_timer() to return msStephen Warren
Apparently, CONFIG_SYS_HZ must be 1000. Change this, and fix the timer driver to conform to this. Have the timer implementation export a custom API get_timer_us() for use by the BCM2835 MMC API, which needs us resolution for a HW workaround. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2013-03-20ARM: rpi_b: enable SD controller, add related env/cmdsStephen Warren
Enable the SD controller driver for the Raspberry Pi. Enable a number of useful MMC, partition, and filesystem-related commands. Set up the environment to provide standard locations for loading a kernel, DTB, etc. Provide a boot command that loads and executes boot.scr.uimg from the SD card; this is written considering future extensibilty to USB storage. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2013-03-20mmc: add bcm2835 driverStephen Warren
This adds a simple driver for the BCM2835's SD controller. Workarounds are implemented for: * Register writes can't be too close to each-other in time, or they will be lost. * Register accesses must all be 32-bit, so implement custom accessors. This code was extracted from: git://github.com/gonzoua/u-boot-pi.git master which was created by Oleksandr Tymoshenko. Portions of the code there were obviously based on the Linux kernel at: git://github.com/raspberrypi/linux.git rpi-3.6.y commit f5b930b "Main bcm2708 linux port" signed-off-by Dom Cobley. swarren changed the following for upstream: * Removed hack udelay()s in bcm2835_sdhci_raw_writel(); setting SDHCI_QUIRK_WAIT_SEND_CMD appears to solve the issues. * Remove register logging from read*/write* functions. * Sort out confusion with min/max_freq values passed to add_sdhci(). * Use more descriptive variable names and calculations in IO accessors. * Simplified and commented twoticks_delay calculation. * checkpatch fixes. Cc: Andy Fleming <afleming@gmail.com> Signed-off-by: Oleksandr Tymoshenko <gonzo@bluezbox.com> Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Andy Fleming <afleming@gmail.com>
2013-03-20ARM: bcm2835: add mailbox driverStephen Warren
The BCM2835 SoC contains (at least) two CPUs; the VideoCore (a/k/a "GPU") and the ARM CPU. The ARM CPU is often thought of as the main CPU. However, the VideoCore actually controls the initial SoC boot, and hides much of the hardware behind a protocol. This protocol is transported using the SoC's mailbox hardware module. Here, we add a very simplistic driver for the mailbox module, and define a few structures for the property messages. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2012-09-01ARM: add basic support for the Broadcom BCM2835 SoCStephen Warren
This SoC is used in the Raspberry Pi, for example. For more details, see: http://www.broadcom.com/products/BCM2835 http://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf. Initial support is enough to boot to a serial console, execute a minimal set of U-Boot commands, download data over a serial port, and boot a Linux kernel. No storage or network drivers are implemented. GPIO driver originally by Vikram Narayanan <vikram186@gmail.com> with many fixes from myself. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>