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2015-06-26Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-armLinus Torvalds1-0/+15
Pull ARM updates from Russell King: "Bigger items included in this update are: - A series of updates from Arnd for ARM randconfig build failures - Updates from Dmitry for StrongARM SA-1100 to move IRQ handling to drivers/irqchip/ - Move ARMs SP804 timer to drivers/clocksource/ - Perf updates from Mark Rutland in preparation to move the ARM perf code into drivers/ so it can be shared with ARM64. - MCPM updates from Nicolas - Add support for taking platform serial number from DT - Re-implement Keystone2 physical address space switch to conform to architecture requirements - Clean up ARMv7 LPAE code, which goes in hand with the Keystone2 changes. - L2C cleanups to avoid unlocking caches if we're prevented by the secure support to unlock. - Avoid cleaning a potentially dirty cache containing stale data on CPU initialisation - Add ARM-only entry point for secondary startup (for machines that can only call into a Thumb kernel in ARM mode). Same thing is also done for the resume entry point. - Provide arch_irqs_disabled via asm-generic - Enlarge ARMv7M vector table - Always use BFD linker for VDSO, as gold doesn't accept some of the options we need. - Fix an incorrect BSYM (for Thumb symbols) usage, and convert all BSYM compiler macros to a "badr" (for branch address). - Shut up compiler warnings provoked by our cmpxchg() implementation. - Ensure bad xchg sizes fail to link" * 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (75 commits) ARM: Fix build if CLKDEV_LOOKUP is not configured ARM: fix new BSYM() usage introduced via for-arm-soc branch ARM: 8383/1: nommu: avoid deprecated source register on mov ARM: 8391/1: l2c: add options to overwrite prefetching behavior ARM: 8390/1: irqflags: Get arch_irqs_disabled from asm-generic ARM: 8387/1: arm/mm/dma-mapping.c: Add arm_coherent_dma_mmap ARM: 8388/1: tcm: Don't crash when TCM banks are protected by TrustZone ARM: 8384/1: VDSO: force use of BFD linker ARM: 8385/1: VDSO: group link options ARM: cmpxchg: avoid warnings from macro-ized cmpxchg() implementations ARM: remove __bad_xchg definition ARM: 8369/1: ARMv7M: define size of vector table for Vybrid ARM: 8382/1: clocksource: make ARM_TIMER_SP804 depend on GENERIC_SCHED_CLOCK ARM: 8366/1: move Dual-Timer SP804 driver to drivers/clocksource ARM: 8365/1: introduce sp804_timer_disable and remove arm_timer.h inclusion ARM: 8364/1: fix BE32 module loading ARM: 8360/1: add secondary_startup_arm prototype in header file ARM: 8359/1: correct secondary_startup_arm mode ARM: proc-v7: sanitise and document registers around errata ARM: proc-v7: clean up MIDR access ...
2015-06-26Merge tag 'armsoc-drivers' of ↵Linus Torvalds3-1/+39
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC driver updates from Kevin Hilman: "Some of these are for drivers/soc, where we're now putting SoC-specific drivers these days. Some are for other driver subsystems where we have received acks from the appropriate maintainers. Some highlights: - simple-mfd: document DT bindings and misc updates - migrate mach-berlin to simple-mfd for clock, pinctrl and reset - memory: support for Tegra132 SoC - memory: introduce tegra EMC driver for scaling memory frequency - misc. updates for ARM CCI and CCN busses" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (48 commits) drivers: soc: sunxi: Introduce SoC driver to map SRAMs arm-cci: Add aliases for PMU events arm-cci: Add CCI-500 PMU support arm-cci: Sanitise CCI400 PMU driver specific code arm-cci: Abstract handling for CCI events arm-cci: Abstract out the PMU counter details arm-cci: Cleanup PMU driver code arm-cci: Do not enable CCI-400 PMU by default firmware: qcom: scm: Add HDCP Support ARM: berlin: add an ADC node for the BG2Q ARM: berlin: remove useless chip and system ctrl compatibles clk: berlin: drop direct of_iomap of nodes reg property ARM: berlin: move BG2Q clock node ARM: berlin: move BG2CD clock node ARM: berlin: move BG2 clock node clk: berlin: prepare simple-mfd conversion pinctrl: berlin: drop SoC stub provided regmap ARM: berlin: move pinctrl to simple-mfd nodes pinctrl: berlin: prepare to use regmap provided by syscon reset: berlin: drop arch_initcall initialization ...
2015-06-26Merge tag 'armsoc-soc' of ↵Linus Torvalds3-2/+63
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC platform support updates from Kevin Hilman: "Our SoC branch usually contains expanded support for new SoCs and other core platform code. Some highlights from this round: - sunxi: SMP support for A23 SoC - socpga: big-endian support - pxa: conversion to common clock framework - bcm: SMP support for BCM63138 - imx: support new I.MX7D SoC - zte: basic support for ZX296702 SoC" * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (134 commits) ARM: zx: Add basic defconfig support for ZX296702 ARM: dts: zx: add an initial zx296702 dts and doc clk: zx: add clock support to zx296702 dt-bindings: Add #defines for ZTE ZX296702 clocks ARM: socfpga: fix build error due to secondary_startup MAINTAINERS: ARM64: EXYNOS: Extend entry for ARM64 DTS ARM: ep93xx: simone: support for SPI-based MMC/SD cards MAINTAINERS: update Shawn's email to use kernel.org one ARM: socfpga: support suspend to ram ARM: socfpga: add CPU_METHOD_OF_DECLARE for Arria 10 ARM: socfpga: use CPU_METHOD_OF_DECLARE for socfpga_cyclone5 ARM: EXYNOS: register power domain driver from core_initcall ARM: EXYNOS: use PS_HOLD based poweroff for all supported SoCs ARM: SAMSUNG: Constify platform_device_id ARM: EXYNOS: Constify irq_domain_ops ARM: EXYNOS: add coupled cpuidle support for Exynos3250 ARM: EXYNOS: add exynos_get_boot_addr() helper ARM: EXYNOS: add exynos_set_boot_addr() helper ARM: EXYNOS: make exynos_core_restart() less verbose ARM: EXYNOS: fix exynos_boot_secondary() return value on timeout ...
2015-06-11Merge tag 'imx-soc-4.2' of ↵Kevin Hilman2-0/+63
git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/soc The i.MX SoC updates for 4.2: - Add new SoC i.MX7D support, which integrates two Cortex-A7 and one Cortex-M4 cores. - Support suspend from IRAM on i.MX53, so that DDR pins can be set to high impedance for more power saving during suspend. - Move i.MX clock drivers from arch/arm/mach-imx to drivers/clk/imx. - Move i.MX GPT timer driver from arch/arm/mach-imx into drivers/clocksource. - A couple of clock driver update for VF610 and i.MX6Q. - A few random code correction and improvement. * tag 'imx-soc-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: (44 commits) ARM: imx: imx7d requires anatop clocksource: timer-imx-gpt: remove include of <asm/mach/time.h> ARM: imx: move timer driver into drivers/clocksource ARM: imx: remove platform headers from timer driver ARM: imx: provide gpt device specific irq functions ARM: imx: get rid of variable timer_base ARM: imx: define gpt register offset per device type ARM: imx: move clock event variables into imx_timer ARM: imx: set up .set_next_event hook via imx_gpt_data ARM: imx: setup tctl register in device specific function ARM: imx: initialize gpt device type for DT boot ARM: imx: define an enum for gpt timer device type ARM: imx: move timer resources into a structure ARM: imx: use relaxed IO accessor in timer driver ARM: imx: make imx51/3 suspend optional ARM: clk-imx6q: refine sata's parent ARM: imx: clk-v610: Add clock for I2C2 and I2C3 ARM: mach-imx: iomux-imx31: Use DECLARE_BITMAP ARM: imx: add imx7d clk tree support ARM: clk: imx: update pllv3 to support imx7 ... Conflicts: arch/arm/mach-imx/Kconfig
2015-06-03ARM: imx: define an enum for gpt timer device typeShawn Guo1-0/+26
Define an enum for gpt timer device type in include/soc/imx/timer.h to tell the gpt block differences among SoCs. Update non-DT users (clock drivers) to pass the device type. As we now have include/soc/imx/timer.h, the declaration of mxc_timer_init() is moved into there as the best fit. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2015-06-03ARM: imx: move revision definitions and declarations into a headerShawn Guo1-0/+37
The revision definitions and declarations are widely used by clock drivers. As a step of moving clock drivers out of arch/arm/mach-imx, let's create header include/soc/imx/revision.h to accommodate them. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2015-05-20ARM: at91: remove at91rm9200_sdramc.hAlexandre Belloni1-63/+0
include/soc/at91/at91rm9200_sdramc.h is replaced by include/linux/mfd/syscon/atmel-smc.h as this is actually a syscon device. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-05-19ARM: 8361/1: sa1100: add platform functions to handle PWER settingsDmitry Eremin-Solenikov1-0/+15
PWER settings logically belongs neither to GPIO nor to system IRQ code. Add special functions to handle PWER (for GPIO and for system IRQs) from platform code. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-05-13Merge tag 'tegra-for-4.2-emc' of ↵Arnd Bergmann2-1/+32
git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers Merge "ARM: tegra: Add EMC driver for v4.2-rc1" from Thierry Reding: This introduces the EMC driver that's required to scale the external memory frequency. * tag 'tegra-for-4.2-emc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: memory: tegra: Add EMC frequency debugfs entry memory: tegra: Add EMC (external memory controller) driver memory: tegra: Add API needed by the EMC driver of: Add Tegra124 EMC bindings of: Document timings subnode of nvidia,tegra-mc
2015-05-13Merge tag 'tegra-for-4.2-ramcode' of ↵Arnd Bergmann1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers Merge "ARM: tegra: RAM code access for v4.2-rc1" from Thierry Reding: The RAM code is used by the memory and external memory controllers to determine which set of timings to use for memory frequency scaling. * tag 'tegra-for-4.2-ramcode' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: soc/tegra: fuse: Add RAM code reader helper of: Document long-ram-code property in nvidia,tegra20-apbmisc
2015-05-05memory: tegra: Add EMC (external memory controller) driverMikko Perttunen1-0/+19
Implements functionality needed to change the rate of the memory bus clock. Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-05-05memory: tegra: Add API needed by the EMC driverMikko Perttunen1-1/+13
The EMC driver needs to know the number of external memory devices and also needs to update the EMEM configuration based on the new rate of the memory bus. To know how to update the EMEM config, looks up the values of the burst regs in the DT, for a given timing. Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-05-04soc/tegra: pmc: move to using a restart handlerDavid Riley1-2/+0
The pmc driver was previously exporting tegra_pmc_restart, which was assigned to machine_desc.init_machine, taking precedence over the restart handlers registered through register_restart_handler(). Signed-off-by: David Riley <davidriley@chromium.org> [tomeu.vizoso@collabora.com: Rebased] Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Acked-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> [treding@nvidia.com: minor cleanups] Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-05-04soc/tegra: fuse: Add RAM code reader helperMikko Perttunen1-0/+1
Needed for the EMC and MC drivers to know what timings from the DT to use. Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-05-04iommu/tegra-smmu: Add debugfs supportThierry Reding1-0/+5
Provide clients and swgroups files in debugfs. These files show for which clients IOMMU translation is enabled and which ASID is associated with each SWGROUP. Cc: Hiroshi Doyu <hdoyu@nvidia.com> Acked-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-05-04memory: tegra: Add SWGROUP namesThierry Reding1-0/+1
Subsequent patches will add debugfs files that print the status of the SWGROUPs. Add a new names field and complement the SoC tables with the names of the individual SWGROUPs. Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-03-03pm: at91: Workaround DDRSDRC self-refresh bug with LPDDR1 memories.Peter Rosin1-1/+1
The DDRSDR controller fails miserably to put LPDDR1 memories in self-refresh. Force the controller to think it has DDR2 memories during the self-refresh period, as the DDR2 self-refresh spec is equivalent to LPDDR1, and is correctly implemented in the controller. Assume that the second controller has the same fault, but that is untested. Signed-off-by: Peter Rosin <peda@axentia.se> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-09soc/tegra: Add Tegra132 supportThierry Reding1-0/+1
Add the chip ID for the NVIDIA Tegra132 SoC family. Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-01-09soc/tegra: pmc: restrict compilation of suspend-related support to ARMPaul Walmsley1-1/+1
Tegra SoCs with 64-bit ARM support don't currently support deep CPU low-power states in mainline Linux. When this support is added in the future, it will probably look rather different from the existing 32-bit ARM support, since the ARM64 maintainers' strong preference is to use PSCI to implement it. So, for the time being, prevent the CPU suspend-related code and data in the Tegra PMC driver from compiling on ARM64. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Paul Walmsley <pwalmsley@nvidia.com> Cc: Thierry Reding <treding@nvidia.com> Cc: Allen Martin <amartin@nvidia.com> Cc: Stephen Warren <swarren@nvidia.com> Cc: Alexandre Courbot <gnurou@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-12-08Merge branch 'at91/cleanup5' into next/driversArnd Bergmann3-0/+272
The at91 cleanups changed a lot of files, this merges in the latest cleanups to resolve the conflicts Conflicts: arch/arm/mach-at91/at91sam9260.c arch/arm/mach-at91/at91sam9261.c arch/arm/mach-at91/at91sam9263.c arch/arm/mach-at91/clock.c arch/arm/mach-at91/clock.h drivers/rtc/Kconfig Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-12-04memory: Add NVIDIA Tegra memory controller supportThierry Reding1-0/+107
The memory controller on NVIDIA Tegra exposes various knobs that can be used to tune the behaviour of the clients attached to it. Currently this driver sets up the latency allowance registers to the HW defaults. Eventually an API should be exported by this driver (via a custom API or a generic subsystem) to allow clients to register latency requirements. This driver also registers an IOMMU (SMMU) that's implemented by the memory controller. It is supported on Tegra30, Tegra114 and Tegra124 currently. Tegra20 has a GART instead. The Tegra SMMU operates on memory clients and SWGROUPs. A memory client is a unidirectional, special-purpose DMA master. A SWGROUP represents a set of memory clients that form a logical functional unit corresponding to a single device. Typically a device has two clients: one client for read transactions and one client for write transactions, but there are also devices that have only read clients, but many of them (such as the display controllers). Because there is no 1:1 relationship between memory clients and devices the driver keeps a table of memory clients and the SWGROUPs that they belong to per SoC. Note that this is an exception and due to the fact that the SMMU is tightly integrated with the rest of the Tegra SoC. The use of these tables is discouraged in drivers for generic IOMMU devices such as the ARM SMMU because the same IOMMU could be used in any number of SoCs and keeping such tables for each SoC would not scale. Acked-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-11-13ARM: at91: move sdramc/ddrsdr header to include/soc/at91Alexandre Belloni3-0/+272
Move the (DDR) SDRAM controller headers to include/soc/at91 to remove the dependency on mach/ headers from the at91-reset driver. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-07-17ARM: tegra: Convert PMC to a driverThierry Reding2-4/+65
This commit converts the PMC support code to a platform driver. Because the boot process needs to call into this driver very early, also set up a minimal environment via an early initcall. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-07-17soc/tegra: fuse: Set up in early initcallThierry Reding1-1/+0
Rather than rely on explicit initialization order called from SoC setup code, use a plain initcall and rely on initcall ordering to take care of dependencies. This driver exposes some functionality (querying the chip ID) needed at very early stages of the boot process. An early initcall is good enough provided that some of the dependencies are deferred to later stages. To make sure any abuses are easily caught, output a warning message if the chip ID is queried while it can't be read yet. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-07-17soc/tegra: Implement runtime check for Tegra SoCsThierry Reding1-0/+14
Subsequent patches will move some of the initialization code from SoC setup code to regular initcalls. To prevent breakage on other SoCs in multi-platform builds, these initcalls need to check that they indeed run on Tegra. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-07-17soc/tegra: fuse: move APB DMA into Tegra20 fuse driverPeter De Schrijver1-14/+0
The Tegra20 fuse driver is the only user of tegra_apb_readl_using_dma(). Therefore we can simply the code by incorporating the APB DMA handling into the driver directly. tegra_apb_writel_using_dma() is dropped because there are no users. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-07-17soc/tegra: Add efuse driver for TegraPeter De Schrijver1-1/+19
Implement fuse driver for Tegra20, Tegra30, Tegra114 and Tegra124. This replaces functionality previously provided in arch/arm/mach-tegra, which is removed in this patch. While at it, move the only user of the global tegra_revision variable over to tegra_sku_info.revision and export tegra_fuse_readl() to allow drivers to read calibration fuses. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-07-17ARM: tegra: move fuse exports to soc/tegra/fuse.hPeter De Schrijver1-0/+16
All fuse related functionality will move to a driver in the following patches. To prepare for this, export all the required functionality in a global header file and move all users of fuse.h to soc/tegra/fuse.h. While we're at it, remove tegra_bct_strapping, as its only user was removed in Commit a7cbe92cef27 ("ARM: tegra: remove tegra EMC scaling driver"). Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-07-17ARM: tegra: export apb dma readl/writelPeter De Schrijver1-0/+14
Export APB DMA readl and writel. These are needed because we can't access the fuses directly on Tegra20 without potentially causing a system hang. Also have the APB DMA readl and writel return an error in case of a read failure instead of just returning zero or ignore write failures. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-07-17ARM: tegra: Use a function to get the chip IDThierry Reding1-0/+10
Instead of using a simple variable access to get at the Tegra chip ID, use a function so that we can run additional code. This can be used to determine where the chip ID is being accessed without being available. That in turn will be handy for resolving boot sequence dependencies in order to convert more code to regular initcalls rather than a sequence fixed by Tegra SoC setup code. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-07-17ARM: tegra: Move includes to include/soc/tegraThierry Reding4-0/+200
In order to not clutter the include/linux directory with SoC specific headers, move the Tegra-specific headers out into a separate directory. Signed-off-by: Thierry Reding <treding@nvidia.com>