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2012-03-04Merge tag 'tegra-soc' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra into tegra/soc From: Olof Johansson <olof@lixom.net> SoC new development for tegra SoCs, mostly tegra30 core support. It also includes one stray bugfix that was misapplied (should have been in soc-drivers), but it went out to the stable branches before I noticed so I've left it in. * tag 'tegra-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra: ARM: tegra: Demote EMC clock inconsistency BUG to WARN ARM: tegra: Avoid compiling cpuidle code when not configured ARM: tegra: cpuidle driver for tegra ARM: tegra: assembler code for LP3 ARM: tegra: definitions for flow controller ARM: tegra: initialize basic system clocks ARM: tegra: enable tegra30 clock framework ARM: tegra: implement basic tegra30 clock framework ARM: tegra: add support for new clock framework features ARM: tegra: add support for tegra30 interrupts Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-03-04ARM: tegra: Enable CPUIdle on Tegra20Peter De Schrijver
As the LP3 code also works for Tegra20, we can enable cpuidle for Tegra20. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-26ARM: tegra: support for Tegra30 CPU powerdomainsPeter De Schrijver
Secondary CPU powerdomains can be powergated on Tegra30. Add the necessary functions to do this. This will be used to boot the secondary CPUs later on. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-26ARM: tegra: initialize Tegra chipid earlyPeter De Schrijver
Secondary core bringup relies on the Tegra chipid to distinguish between Tegra variants. Therefore this data needs to be available early on. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-26Merge branch 'for-3.4/soc-drivers' into for-3.4/t30-smpOlof Johansson
Conflicts: arch/arm/mach-tegra/Makefile
2012-02-06ARM: tegra: Add a simple PMC driverStephen Warren
This PMC driver is enough to parse the nvidia,invert-interrupt property from device tree, and configure the PMC's to honor that. In the future, this file could expand to centralize all other PMC accesses within the mach-tegra code. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-06ARM: tegra: Pass uncompress.h UART selection to DEBUG_LLStephen Warren
uncompress.h now saves the selected UART's physical address in Tegra's IRAM, along with a cookie to indicate validity. The first time it's run, macro addruart in debug-macro.S looks for this cookie, and if it's present, uses the UART address stored there. If not, the static value TEGRA_DEBUG_UART_BASE is used, as was previous behaviour. The static behaviour will thus be used when not booting using a zImage. This work was inspired by work by Doug Anderson <dianders@chromium.org>; see http://lkml.org/lkml/2011/9/26/284. However, this patch relies on the data passing describe above, rather than duplicating the UART selection logic in debug-macro.S; the latest selection logic is more complex due to the need to check reset/clock bits too. Signed-off-by: Stephen Warren <swarren@nvidia.com> Tested-by: Doug Anderson <dianders@chromium.org> Acked-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-06ARM: tegra: enable tegra30 clock frameworkPeter De Schrijver
Add init calls for clocks on tegra30. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2012-01-20ARM: mach-tegra: properly disable CPU idle callNicolas Pitre
Signed-off-by: nicolas Pitre <nicolas.pitre@linaro.org> Acked-by: Stephen Warren <swarren@nvidia.com>
2012-01-07Merge branch 'depends/rmk/for-linus' into next/socArnd Bergmann
Conflicts: arch/arm/mach-tegra/board-dt-tegra20.c arch/arm/mach-tegra/common.c
2012-01-05ARM: restart: tegra: use new restart hookRussell King
Hook these platforms restart code into the new restart hook rather than using arch_reset(). Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-12-19arm/tegra: Compile tegra_dt_init_irq only when CONFIG_OFStephen Warren
This fixes a build break attempting to build a Tegra20-only kernel without device tree enabled. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2011-12-17arm/tegra: implement support for tegra30Peter De Schrijver
Add support for tegra30 SoC. This includes a device tree compatible type for this SoC ("nvidia,tegra30") and adds L2 cache initialization for this new SoC. The clock framework is still missing, which prevents most drivers from working. The basic IRQs are the same, so remove the dependency on CONFIG_ARCH_TEGRA_2x_SOC. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Colin Cross <ccross@android.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2011-12-17arm/tegra: generalize L2 cache initializationPeter De Schrijver
Generalize L2 cache initialization and discover L2 cache associativity at runtime. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Colin Cross <ccross@android.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2011-12-17arm/tegra: use PMC resetPeter De Schrijver
Use PMC reset rather then CAR system reset as recommended by the hardware team. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Colin Cross <ccross@android.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2011-12-17arm/tegra: prepare early init for multiple tegra variantsPeter De Schrijver
This patch splits the early init code in a common and a tegra20 specific part. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Colin Cross <ccross@android.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2011-10-13ARM: tegra: tegra_init_cache should be staticOlof Johansson
Not exported and not used externally. Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-02-23ARM: Tegra: Make tegra_dma_init a postcore_initcallStephen Warren
The following commit makes the Tegra APB DMA engine fail to initialize correctly: 0cf6230af909a86f81907455eca2a5c9b8f68fe6 ARM: tegra: Move tegra_common_init to tegra_init_early The reason is that tegra_init_early_ calls tegra_dma_init which calls request_threaded_irq, which fails since the IRQ hasn't yet been marked valid; that only happens in tegra_init_irq, which gets called after tegra_init_early. This used to work OK, since tegra_init_early was tegra_common_init, which got called after tegra_init_irq, basically from the beginning of tegra_harmony_init. Solve this by converting tegra_dma_init to a postcore_initcall. This makes it execute late enough that IRQs are marked valid, and avoids having to add it back to every machine's init function. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Colin Cross <ccross@android.com>
2011-02-22ARM: tegra: common: Enable core clocksColin Cross
Enable the cpu, emc (memory controller) and csite (debug and trace controller) clocks during init to prevent them from being disabled by the bootloader clock disabling code. Signed-off-by: Colin Cross <ccross@android.com> Acked-by: Olof Johansson <olof@lixom.net>
2011-02-22ARM: tegra: Move tegra_common_init to tegra_init_earlyColin Cross
Move tegra_common_init to tegra_init_early, and set it as the init_early entry in the machine struct. Initializes the clocks earlier so that timers can enable their clocks. Also reorders the members in the Harmony and Trimslice boards' machine structs to match the order they are called in. Signed-off-by: Colin Cross <ccross@android.com> Acked-by: Olof Johansson <olof@lixom.net>
2011-02-20ARM: tegra: Fix hang on rebootSimon Glass
This seems to be a regression in 2.6.37. We cannot use writel() here since the resulting wmb() calls l2x0_cache_sync() which uses a spinlock and L1 cache may be off at this point. http://lists.infradead.org/pipermail/linux-arm-kernel/2011-February/041909.html Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Colin Cross <ccross@android.com>
2011-02-10ARM: tegra: Use writel_relaxed in tegra_init_cacheColin Cross
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-10ARM: tegra: Allow overriding arch_resetColin Cross
Signed-off-by: Colin Cross <ccross@android.com>
2010-10-21[ARM] tegra: Add APB DMA supportColin Cross
The APB DMA block handles DMA transfers to and from some peripherals in the Tegra SOC. It reads from sequential addresses on the memory bus, and writes repeatedly to the same address on the APB bus. Two transfer modes are supported, oneshot for transferring a known size to or from a peripheral, and continuous for streaming data. In continuous mode, a callback occurs when the buffer is half full to allow the existing data to be handled and a new request queued.x v2 changes: dma API no longer uses PTR_ERR Signed-off-by: Erik Gilling <konkers@android.com> Signed-off-by: Colin Cross <ccross@android.com>
2010-10-21[ARM] tegra: common: Update common clock init tableColin Cross
Renames clocks in the clock init table to match the datasheet names Signed-off-by: Colin Cross <ccross@android.com>
2010-10-21[ARM] tegra: Add support for reading fusesColin Cross
The Tegra SOC contains fuses to identify the CPU type and bin, and a unique id. The CPU info is required to determine the correct voltages for each cpu and core frequency. Signed-off-by: Colin Cross <ccross@android.com>
2010-08-05[ARM] tegra: Add clock supportColin Cross
v2: fixes from Russell King: - include linux/io.h instead of asm/io.h - fix whitespace in Kconfig - Use spin_lock_init to initialize lock - Return -ENOSYS instead of BUG for unimplemented clock ops - Use proper return values in tegra2 clock ops additional changes: - Rename some clocks to match dev_ids - add rate propagation - add debugfs entries - add support for clock listed in clk_lookup under multiple dev_ids v3: - Replace per-clock locking with global clock lock - Autodetect clock state on init - Let clock dividers pick next lower possible frequency - Add support for clock init tables - Minor bug fixes - Fix checkpatch issues Signed-off-by: Colin Cross <ccross@android.com>
2010-08-05[ARM] tegra: initial tegra supportErik Gilling
v2: Fixes from Mike Rapoport - remove unused header files (mach/dma.h and mach/nand.h) - remove tegra 1 references from Makefile.boot v2: fixes from Russell King - remove mach/io.h include from mach/iomap.h - fix whitespace in Kconfig v2: from Colin Cross - fix invalid immediate in debug-macro.S v3: - allow selection of multiple boards Signed-off-by: Colin Cross <ccross@android.com> Signed-off-by: Erik Gilling <konkers@android.com>
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