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* ARC: add/fix some comments in code - no functional changeVineet Gupta2015-08-201-6/+7
| | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARCv2: [axs103] bump CPU frequency from 75 to 90 MHZAlexey Brodkin2015-07-092-2/+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
* ARCv2: [vdk] dts files and defconfig for HS38 VDKRuud Derwig2015-06-255-0/+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>
* ARCv2: [axs103] Support ARC SDP FPGA platform for HS38x coresVineet Gupta2015-06-254-0/+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>
* ARC: [axs101] Prepare for AXS103Alexey Brodkin2015-06-252-17/+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>
* ARCv2: [nsim*hs*] Support simulation platforms for HS38x coresVineet Gupta2015-06-254-0/+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>
* ARC: [axs101] STAR 9000799830: Fix SD cards supportAlexey Brodkin2015-06-191-1/+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>
* ARC: [axs101] support early 8250 uartVineet Gupta2015-06-191-2/+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>
* ARC: [axs101] Add support for AXS101 SDP (software development platform)Alexey Brodkin2015-06-193-0/+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>
* ARC: [plat_arcfpga]->[plat_sim]Vineet Gupta2015-06-192-2/+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>
* ARC: perf: Rename DT binding to not confuse with power mgmtVineet Gupta2015-04-201-1/+1
| | | | Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* dmaengine: dw: define DW_DMA_MAX_NR_MASTERSAndy Shevchenko2015-02-041-1/+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>
* ARC: [nsimosci] move peripherals to match model to FPGAVineet Gupta2014-12-151-9/+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
* ARC: [nsimosci] Allow "headless" models to bootVineet Gupta2014-10-131-1/+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
* ARC: [arcfpga] consolidate machine description, DTVineet Gupta2014-10-132-10/+0
| | | | | | | * AA4/ML509 have same machine descriptions * Rename simulation machine description Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* Revert "ARC: [arcfpga] stdout-path now suffices for earlycon/console"Greg Kroah-Hartman2014-07-271-2/+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>
* ARC: [arcfpga] stdout-path now suffices for earlycon/consoleVineet Gupta2014-07-101-1/+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>
* serial/arc: remove earlyprintk support and switch to earlyconVineet Gupta2014-07-101-1/+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>
* ARC: [arcfpga] Early ARC UART to be only activated by cmdlineVineet Gupta2014-06-031-1/+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>
* ARC: [nsimosci] Unbork consoleVineet Gupta2014-04-051-1/+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>
* ARC: [nsimosci] Change .dts to use generic 8250 UARTMischa Jonker2014-04-051-4/+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>
* ARC: Remove unused DT template fileVineet Gupta2014-03-311-10/+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>
* ARC: Add perf support for ARC700 coresMischa Jonker2013-11-121-0/+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>
* ARC: [TB10x] Updates for GPIO and pinctrlChristian Ruppert2013-11-115-187/+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>
* Merge tag 'arc-v3.11-rc1-part2' of ↵Linus Torvalds2013-07-104-54/+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
| * ARC: [TB10x] Updates for irqchip driverChristian Ruppert2013-06-283-54/+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>
| * ARC: [plat-arcfpga] Enable arc_emac for ARCAngle4 BoardAlexey Brodkin2013-06-281-0/+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>
* | i2c-designware: make SDA hold time configurableChristian Ruppert2013-06-262-10/+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>
* ARC: [TB10x] Remove redundant abilis,simple-pinctrl mechanismChristian Ruppert2013-05-153-6/+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>
* ARC: Add support for nSIM OSCI System C modelMischa Jonker2013-05-071-0/+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>
* ARC: [TB10x] Adapt device tree to new compatible stringChristian Ruppert2013-05-071-2/+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>
* ARC: [TB10x] Device tree of TB100 and TB101 Development KitsChristian Ruppert2013-05-075-0/+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>
* ARC: [kbuild] Avoid DTB rebuilds if DTS are untouchedVineet Gupta2013-04-171-1/+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>
* ARC: [plat-arcfpga] DT arc-uart bindings change: "baud" => "current-speed"Vineet Gupta2013-02-151-1/+1
| | | | | | Per Grant's review comment - driver changes via tty tree Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [plat-arcfpga]: Enabling DeviceTree for Angel4 boardVineet Gupta2013-02-153-1/+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>
* ARC: [DeviceTree] Convert some Kconfig items to runtime valuesVineet Gupta2013-02-151-1/+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>
* ARC: [DeviceTree] Basic supportVineet Gupta2013-02-153-0/+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>
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