summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-tegra/common.c
Commit message (Collapse)AuthorAgeFilesLines
* ARM: Tegra: Make tegra_dma_init a postcore_initcallStephen Warren2011-02-231-4/+0
| | | | | | | | | | | | | | | | | | | | | | 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>
* ARM: tegra: common: Enable core clocksColin Cross2011-02-221-0/+3
| | | | | | | | | 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>
* ARM: tegra: Move tegra_common_init to tegra_init_earlyColin Cross2011-02-221-1/+1
| | | | | | | | | | | | | | 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>
* ARM: tegra: Fix hang on rebootSimon Glass2011-02-201-2/+3
| | | | | | | | | | | | 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>
* ARM: tegra: Use writel_relaxed in tegra_init_cacheColin Cross2011-02-101-2/+2
| | | | Signed-off-by: Colin Cross <ccross@android.com>
* ARM: tegra: Allow overriding arch_resetColin Cross2011-02-101-0/+13
| | | | Signed-off-by: Colin Cross <ccross@android.com>
* [ARM] tegra: Add APB DMA supportColin Cross2010-10-211-0/+7
| | | | | | | | | | | | | | | | | 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>
* [ARM] tegra: common: Update common clock init tableColin Cross2010-10-211-2/+2
| | | | | | Renames clocks in the clock init table to match the datasheet names Signed-off-by: Colin Cross <ccross@android.com>
* [ARM] tegra: Add support for reading fusesColin Cross2010-10-211-0/+2
| | | | | | | | 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>
* [ARM] tegra: Add clock supportColin Cross2010-08-051-0/+17
| | | | | | | | | | | | | | | | | | | | | | | 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>
* [ARM] tegra: initial tegra supportErik Gilling2010-08-051-0/+44
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>
OpenPOWER on IntegriCloud