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2015-12-17ARC: [plat-sim] unbork non default CONFIG_LINUX_LINK_BASEVineet Gupta1-1/+2
HIGHMEM support bumped the default memory size for nsim platform to 1G. Thus total memory ended at the very edge of start of peripherals address space. With linux link base shifted, memory started bleeding into peripheral space which caused early boot bad_page spew ! Fixes: 29e332261d2 ("ARC: mm: HIGHMEM: populate high memory from DT") Reported-by: Anton Kolesov <akolesov@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-12-07ARC: [axs10x] cap ethernet phy to 100 Mbit/secAlexey Brodkin1-0/+1
Current ARC SDP boards cannot reliably handle 1Gbit Ethernet connections due to limitations in hardware. To make sure networking is stable on the board we're limiting phy to 100 Mbit. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-11-06Merge tag 'devicetree-for-4.4' of ↵Linus Torvalds1-2/+4
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull DeviceTree updates from Rob Herring: "A fairly large (by DT standards) pull request this time with the majority being some overdue moving DT binding docs around to consolidate similar bindings. - DT binding doc consolidation moving similar bindings to common locations. The majority of these are display related which were scattered in video/, fb/, drm/, gpu/, and panel/ directories. - Add new config option, CONFIG_OF_ALL_DTBS, to enable building all dtbs in the tree for most arches with dts files (except powerpc for now). - OF_IRQ=n fixes for user enabled CONFIG_OF. - of_node_put ref counting fixes from Julia Lawall. - Common DT binding for wakeup-source and deprecation of all similar bindings. - DT binding for PXA LCD controller. - Allow ignoring failed PCI resource translations in order to ignore 64-bit addresses on non-LPAE 32-bit kernels. - Support setting the NUMA node from DT instead of only from parent device. - Couple of earlycon DT parsing fixes for address and options" * tag 'devicetree-for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (45 commits) MAINTAINERS: update DT binding doc locations devicetree: add Sigma Designs vendor prefix of: simplify arch_find_n_match_cpu_physical_id() function Documentation: arm: Fixed typo in socfpga fpga mgr example Documentation: devicetree: fix reference to legacy wakeup properties Documentation: devicetree: standardize/consolidate on "wakeup-source" property drivers: of: removing assignment of 0 to static variable xtensa: enable building of all dtbs mips: enable building of all dtbs metag: enable building of all dtbs metag: use common make variables for dtb builds h8300: enable building of all dtbs arm64: enable building of all dtbs arm: enable building of all dtbs arc: enable building of all dtbs arc: use common make variables for dtb builds of: add config option to enable building of all dtbs of/fdt: fix error checking for earlycon address of/overlay: add missing of_node_put of/platform: add missing of_node_put ...
2015-10-28ARC: mm: HIGHMEM: populate high memory from DTVineet Gupta1-2/+10
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-10-28ARC: Ensure DT mem base is same as what kernel is built withVineet Gupta6-6/+6
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-10-28arc: enable building of all dtbsRob Herring1-0/+2
Enable building all dtb files when CONFIG_OF_ALL_DTBS is enabled. The dtbs are not really dependent on a platform being enabled or any other kernel config, so for testing coverage it is convenient to build all of the dtbs. This builds all dts files in the tree, not just targets listed. Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Vineet Gupta <vgupta@synopsys.com>
2015-10-28arc: use common make variables for dtb buildsRob Herring1-2/+2
Use dtb-y and always make variables to build dtbs instead of explicit dtbs rule. This is in preparation to support building all dtbs. Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Vineet Gupta <vgupta@synopsys.com>
2015-08-20ARC: add/fix some comments in code - no functional changeVineet Gupta1-6/+7
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-07-09ARCv2: [axs103] bump CPU frequency from 75 to 90 MHZAlexey Brodkin2-2/+2
With up-to-date FPGA builds ARC cores are supposed to correctly operate even with 90 MHz clock (which is a target frequency for AXS103 release). Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: arc-linux-dev@synopsys.com
2015-06-25ARCv2: [vdk] dts files and defconfig for HS38 VDKRuud Derwig5-0/+272
- CONFIG_ARC_UBOOT_SUPPORT to handle arguments passed in r0, r1, r2 - CONFIG_DEVTMPFS_MOUNT for mouting rootfs since it uses external cpio for rootfs Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org Signed-off-by: Ruud Derwig <rderwig@synopsys.com> [vgupta: folded the Main baord DT files for smp/up into one] Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-25ARCv2: [axs103] Support ARC SDP FPGA platform for HS38x coresVineet Gupta4-0/+276
Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-25ARC: [axs101] Prepare for AXS103Alexey Brodkin2-17/+21
To avoid duplicating the MB DTS file, move the MB intc entry into cpu card specific file Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-25ARCv2: [nsim*hs*] Support simulation platforms for HS38x coresVineet Gupta4-0/+306
Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19ARC: [axs101] STAR 9000799830: Fix SD cards supportAlexey Brodkin1-1/+19
As DW Mobile Storage databook says it's required to use "Hold Register" if card is enumerated in SDR12 or SDR25 modes. It means we need to act in the same way as in Altera's Socfpga implementation - set "use hold reg" bit in commad. Note that for upstream proper solution would be to remove dw_mci_pltfm_prepare_command() at all and set the bit right in dw_mci_prepare_command() for all platforms. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19ARC: [axs101] support early 8250 uartVineet Gupta1-2/+2
Earlycon calculates UART clock as "BASE_BAUD * 16". In case of ARC "BASE_BAUD" is calculated dynamically in runtime, basically it is an alias to arc_early_base_baud(), which in turn just does "arc_base_baud/16". 8250 UART on AXS/SDP board uses 33.3MHz clock source which is set in "arc_base_baud" with this change. Additional compatibility string "snps,arc-sdp" is introduced as well because there're different flavours of AXS boards but they all share the same motherboard and so it's possible to re-use the same code for motherbord even if CPU daughterboard changes. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19ARC: [axs101] Add support for AXS101 SDP (software development platform)Alexey Brodkin3-0/+323
The AXS10x platforms consist of a mainboard with peripherals, on which several daughter cards can be placed. The daughter cards typically contain a CPU and memory. Signed-off-by: Mischa Jonker <mjonker@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19ARC: [plat_arcfpga]->[plat_sim]Vineet Gupta2-2/+2
* Remove remanants of legacy ARC FPGA platforms (AA4, ML509...) * Only nsim simulation platform is left, rename platform accordingly * AA4 DT stuff is compatible with nsim for ARC700 so rename it too Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-04-20ARC: perf: Rename DT binding to not confuse with power mgmtVineet Gupta1-1/+1
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-02-05dmaengine: dw: define DW_DMA_MAX_NR_MASTERSAndy Shevchenko1-1/+1
Instead of using magic number in the code the patch provides DW_DMA_MAX_NR_MASTERS constant. While here, restrict the reading of data width array by amount of the actual number of AHB masters. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-12-15ARC: [nsimosci] move peripherals to match model to FPGAVineet Gupta1-9/+9
This allows the sdplite/Zebu images to run on OSCI simulation platform Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: <stable@vger.kernel.org> #3.10, 3.12, 3.14, 3.16
2014-10-13ARC: [nsimosci] Allow "headless" models to bootVineet Gupta1-1/+1
There are certain test configuration of virtual platform which don't have any real console device (uart/pgu). So add tty0 as a fallback console device to allow system to boot and be accessible via telnet Otherwise with ttyS0 as only console, but 8250 disabled in kernel build, init chokes. Reported-by: Anton Kolesov <akolesov@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: <stable@vger.kernel.org> #3.10, 3.12, 3.14, 3.16
2014-10-13ARC: [arcfpga] consolidate machine description, DTVineet Gupta2-10/+0
* AA4/ML509 have same machine descriptions * Rename simulation machine description Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-07-28Revert "ARC: [arcfpga] stdout-path now suffices for earlycon/console"Greg Kroah-Hartman1-2/+1
This reverts commit 9da433c0a0b5f71ac92dc9dca778295649675f08. Vineet writes: Could you please revert this single patch from tty-next for 3.17 as the needed core changes are not yet finalized. Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-11ARC: [arcfpga] stdout-path now suffices for earlycon/consoleVineet Gupta1-1/+2
With recent improvements to serial/of core from Grant and Rob, stdout-path alone suffices for setting up earlycon/console. arc_uart driver is already equipped to handle that, switch the DT now. Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-11serial/arc: remove earlyprintk support and switch to earlyconVineet Gupta1-1/+1
Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03ARC: [arcfpga] Early ARC UART to be only activated by cmdlineVineet Gupta1-1/+1
Earlier CONFIG_SERIAL_ARC_CONSOLE would unconditionally enable the legacy ARC UART based early console even if platform lacked that UART (e.g. nSIM OSCI platform). So a multi-platform image containing the 2 UART drivers won't work. Fix that by probing the driver only if "earlyprintk=ttyARC0" is present in cmdline. Reported-by: Chuck Jordan <cjordan@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-04-05ARC: [nsimosci] Unbork consoleVineet Gupta1-1/+4
Despite the switch to right UART driver (prev patch), serial console still doesn't work due to missing CONFIG_SERIAL_OF_PLATFORM Also fix the default cmdline in DT to not refer to out-of-tree ARC framebuffer driver for console. Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: <stable@vger.kernel.org> #3.10, 3.12, 3.13, 3.14 Cc: Francois Bedard <Francois.Bedard@synopsys.com>
2014-04-05ARC: [nsimosci] Change .dts to use generic 8250 UARTMischa Jonker1-4/+3
The Synopsys APB DW UART has a couple of special features that are not in the System C model. In 3.8, the 8250_dw driver didn't really use these features, but from 3.9 onwards, the 8250_dw driver has become incompatible with our model. Signed-off-by: Mischa Jonker <mjonker@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: <stable@vger.kernel.org> #3.10, 3.12, 3.13, 3.14 Cc: Francois Bedard <Francois.Bedard@synopsys.com>
2014-03-31ARC: Remove unused DT template fileVineet Gupta1-10/+0
Commit abe11ddea1d759f9 "Enabling DeviceTree for Angel4 board" made angel4.dts as default leaving the orphan skeleton file behind. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-03-26ARC: add uImage to .gitignoreMischa Jonker1-0/+1
Signed-off-by: Mischa Jonker <mjonker@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-11-12ARC: Add perf support for ARC700 coresMischa Jonker1-0/+4
This adds basic perf support for ARC700 cores. Most PERF_COUNT_HW* events are supported now. Signed-off-by: Mischa Jonker <mjonker@synopsys.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-11-11ARC: [TB10x] Updates for GPIO and pinctrlChristian Ruppert5-187/+214
Device tree and Kconfig updates for GPIO and pinctrl drivers. Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-08-26ARC: Add some .gitignore entriesVineet Gupta1-0/+1
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-07-10Merge tag 'arc-v3.11-rc1-part2' of ↵Linus Torvalds4-54/+58
git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull second set of ARC architecture updates from Vineet Gupta: "Couple of Platform updates (Device Tree files primarily) given that the corresponding drivers (net/ethernet/arc/*, irqctl/irq-tb10x.c) have now been merged into your tree. Ideally these shd have been part of same submissions, oh well..." * tag 'arc-v3.11-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: [TB10x] Updates for irqchip driver ARC: [plat-arcfpga] Enable arc_emac for ARCAngle4 Board
2013-06-28ARC: [TB10x] Updates for irqchip driverChristian Ruppert3-54/+42
Device tree and Kconfig updates for irqchip driver. Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-06-28ARC: [plat-arcfpga] Enable arc_emac for ARCAngle4 BoardAlexey Brodkin1-0/+16
* Add arc_emac to DeviceTree DT description "Documentation/devicetree/bindings/net/arc_emac.txt". * Update defconfig correspondingly [vgupta: tweaked changelog] Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-06-26i2c-designware: make SDA hold time configurableChristian Ruppert2-10/+10
This patch makes the SDA hold time configurable through device tree. Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com> Signed-off-by: Pierrick Hascoet <pierrick.hascoet@abilis.com> Acked-by: Vineet Gupta <vgupta@synopsys.com> for arch/arc bits Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2013-05-15ARC: [TB10x] Remove redundant abilis,simple-pinctrl mechanismChristian Ruppert3-6/+4
The TB10x platform port includes a custom mechanism using to set up default pin controller configurations using abilis,simple-default pin configurations of nodes compatible with abilis,simple-pinctrl. This mechanism is redundant with the Linux standard "default" pin configuration, see commit ab78029ecc347debbd737f06688d788bd9d60c1d "drivers/pinctrl: grab default handles from device core". This patch removes the TB10x custom mechanism in favour of the Linux standard. Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com> Reviewed-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-05-07ARC: Add support for nSIM OSCI System C modelMischa Jonker1-0/+77
This adds support for an ARC Virtual Platform. This platform is based on the System C standard promoted by the OSCI (Open System C Initiative) and uses nSIM to simulate the ARC CPU core itself. Users can build a virtual SoC by combining System C models of peripherals and CPU cores. Signed-off-by: Mischa Jonker <mjonker@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-05-07ARC: [TB10x] Adapt device tree to new compatible stringChristian Ruppert1-2/+2
The original device tree was written using a slightly different implementation of the fixed-factor-clock device tree binding. The compatible string must be modified in order to be compatible with the new implementation. Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-05-07ARC: [TB10x] Device tree of TB100 and TB101 Development KitsChristian Ruppert5-0/+1190
These are the device tree files for the Abilis Systems TB100 and TB101 ICs and their respective development kit PCBs. These files are committed in preparation of the following patch set which adds support for these chips to the ARC platform. Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com> Signed-off-by: Pierrick Hascoet <pierrick.hascoet@abilis.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-04-17ARC: [kbuild] Avoid DTB rebuilds if DTS are untouchedVineet Gupta1-1/+3
Currently, for every ARC kernel build I see the following: --------------->8----------------- DTB arch/arc/boot/dts/angel4.dtb.S AS arch/arc/boot/dts/angel4.dtb.o LD arch/arc/boot/dts/built-in.o rm arch/arc/boot/dts/angel4.dtb.S <-- forces rebuild next iter CHK kernel/config_data.h --------------->8----------------- This is because *.dts.S is intermediate file in dtb generation and is by default deleted by make which needs a ".SECONDARY" hint to NOT do so. This could have ideally been done in scripts/Makefile.lib - for benefit of all, however .SECONDARY doesn't seem to work with wildcards. Thanks to Stephen for suggesting .SECONDARY (vs .PRECIOUS) and making that work using a non wildcard version in arch makefile. Thanks to James Hogan for pointing out that *.dtb.S now needs to be added to clean-files Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-04-09ARC: [build] Allow uncompressed uImageVineet Gupta1-3/+14
The existing uImage target always generates gzip compressed image which drags bootup for some very slow FPGA customer boards. So introduce seperate make targets:uImage.{bin,gz} with uncompressed being default. Also tie gz generation to CONFIG_KERNEL_GZIP, which a platform can select in it's Kconfig if it wishes gz to be default. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-04-09ARC: [build] cleanup Makefile a bitVineet Gupta1-2/+0
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-02-15ARC: [plat-arcfpga] DT arc-uart bindings change: "baud" => "current-speed"Vineet Gupta1-1/+1
Per Grant's review comment - driver changes via tty tree Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-02-15ARC: [plat-arcfpga]: Enabling DeviceTree for Angel4 boardVineet Gupta3-1/+68
* arc-uart platform device now populated dynamically, using of_platform_populate() - applies to any other device whatsoever. * uart in turn requires incore arc-intc to be also present in DT * A irq-domain needs to be instantiated for IRQ requests by DT probed device (e.g. arc-uart) TODO: switch over to linear irq domain once all devs have been transitioned to DT Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Arnd Bergmann <arnd@arndb.de>
2013-02-15ARC: [DeviceTree] Convert some Kconfig items to runtime valuesVineet Gupta1-1/+5
* mem size now runtime configured (prev CONFIG_ARC_PLAT_SDRAM_SIZE) * core cpu clk runtime configured (prev CONFIG_ARC_PLAT_CLK) Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Grant Likely <grant.likely@secretlab.ca>
2013-02-15ARC: [DeviceTree] Basic supportVineet Gupta3-0/+44
This is minimal infrastructure needed for devicetree work. It uses an a sample "skeleton" devicetree - embedded in kernel image - to print the board, manufacturer by parsing the top-level "compatible" string. As of now we don't need any additional "board" specific "machine_desc". TODO: support interpreting the command line as boot-loader passed dtb Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: devicetree-discuss@lists.ozlabs.org Cc: Rob Herring <rob.herring@calxeda.com> Cc: James Hogan <james.hogan@imgtec.com> Reviewed-by: Rob Herring <rob.herring@calxeda.com> Reviewed-by: James Hogan <james.hogan@imgtec.com>
2013-02-11ARC: Build system: Makefiles, Kconfig, Linker scriptVineet Gupta1-0/+26
Arnd in his review pointed out that arch Kconfig organisation has several deficiencies: * Build time entries for things which can be runtime extracted from DT (e.g. SDRAM size, core clk frequency..) * Not multi-platform-image-build friendly (choice .. endchoice constructs) * cpu variants support (750/770) is exclusive. The first 2 have been fixed in subsequent patches. Due to the nature of the 750 and 770, it is not possible to build for both together, w/o special runtime glue code which would hurt performance. Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Sam Ravnborg <sam@ravnborg.org> Acked-by: Sam Ravnborg <sam@ravnborg.org>
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