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2017-09-01ARC: [plat-axs103] refactor the DT fudging codeVineet Gupta1-24/+22
with clk frequency setting code gone by prev commits, we can elide the unconditonal DT parsing to the specific case of quad core config where we possibly need to fudge the DT value. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2017-09-01ARC: [plat-axs103] use clk driver #1: Get rid of platform specific cpu clk ↵Eugeniy Paltsev1-113/+5
setting historically axs103 platform code used to set the cpu clk by writing to PLL registers directly. however the axs10x clk driver is now upstream so no need to do this amymore. Driver is selected automatically when CONFIG_ARC_PLAT_AXS10X is set Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com> [vgupta: deleted more code not needed anymore]
2016-11-30ARC: move mcip.h into include/soc and adjust the includesVineet Gupta1-1/+1
Also remove the dependency on ARCv2, to increase compile coverage for !ARCV2 builds Acked-by: Daniel Lezcano <daniel.lezcnao@linaro.org> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-05-19Merge tag 'arc-4.7-rc1' of ↵Linus Torvalds1-7/+20
git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull ARC updates from Vineet Gupta: "We have a relatively big changeset for ARC for 4.7. The highlight is support for EZChip (now Mellanox) NPS-400 network processor, a 400-Gb throughput C-programmable packet processor based on ARC700 cores from Synopsys. See http://www.mellanox.com/related-docs/prod_npu/PB_NPS-400.pdf Also present are irqchip and clocksource drivers for NPS as agreed with respective maintainers to go via ARC tree due to an soc header dependency. I have the needed ACKs from Jason, Marc, Daniel. You might run into a trivial merge conflict in drivers/irqchip/* This EZChip platform support required some deep changes in ARC architecture code and also opportunity to cleanup past sins (legacy irq domains, missing irq domain lookup, hard coded timer irqs...) Summary: - Support for EZChip (now Mellanox) NPS-400 Network processor based on ARC700 - NPS interrupt controller and clocksource drivers - ARC timers probed off DT - ARC iqrchips switching to linear domain (upgrade from legacy domains)" * tag 'arc-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: (37 commits) arc: axs103_smp: Fix CPU frequency to 100MHz for dual-core arc: axs10x: Add DT bindings for I2S PLL Clock ARC: pae: STRICT_MM_TYPECHECKS was broken ARC: Add eznps platform to Kconfig and Makefile ARC: [plat-eznps] Use dedicated COMMAND_LINE_SIZE ARC: [plat-eznps] Use dedicated cpu_relax() ARC: [plat-eznps] Use dedicated identity auxiliary register. ARC: [plat-eznps] Use dedicated SMP barriers ARC: [plat-eznps] Use dedicated atomic/bitops/cmpxchg ARC: [plat-eznps] Use dedicated user stack top ARC: [plat-eznps] Add eznps platform ARC: [plat-eznps] Add eznps board defconfig and dts ARC: Mark secondary cpu online only after all HW setup is done ARC: rwlock: disable interrupts in !LLSC variant ARC: Make vmalloc size configurable ARC: clean out UAPI byteorder.h clean off Kconfig symbol irqchip: add nps Internal and external irqchips clocksource: Add NPS400 timers driver soc: Support for EZchip SoC Documentation: Add EZchip vendor to binding list ...
2016-05-18arc: axs103_smp: Fix CPU frequency to 100MHz for dual-coreAlexey Brodkin1-2/+0
The most recent release of AXS103 [v1.1] is proven to work at 100 MHz in dual-core mode so this change uses mentioned feature. For that we: * Update axc003_idu.dtsi with mention of really-used CPU clock freq * Remove clock override in AXS platform code for dual-core HW Note we're still leaving a hack for clock "downgrade" on early boot for quad-core hardware. Also note this change will break functionality of AXS103 v1.0 hardware. That means all users of AXS103 __must__ upgrade their boards with the most recent firmware. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-05-09ARC: Don't try to use value of top level clock-frequency in DTAlexey Brodkin1-2/+0
We no longer use it and instead a real clk device such as fixed-clk instance is fed to timers etc. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> [vgupta: broken out of a bigger patch, rewrote changelog] Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-05-09ARC: [dts] Add clk feeding into timers to DTsVineet Gupta1-1/+13
This allows us to introduce timers in DT in next commit The core clk frequency hack in AXS103 platform is also extended, where the core clk feeding into timers is updated in-place in FDT. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Rob Herring <robh@kernel.org> Cc: devicetree@vger.kernel.org Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-05-09ARC: [plat-axs] Refactor core freq get/setVineet Gupta1-5/+10
Reduces diff in future patches ! Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-04-26arc: select GPIOLIB directlyLinus Walleij1-1/+1
Instead of indirectly selecting GPIOLIB via the ARCH_REQUIRE_GPIOLIB symbol, just select GPIOLIB. Cc: Michael Büsch <m@bues.ch> Cc: linux-snps-arc@lists.infradead.org Acked-by: Vineet Gupta <vgupt@synopsys.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-03-10ARC: Add PCI supportJoao Pinto1-0/+1
Add PCI support to ARC and update drivers/pci Makefile enabling the ARC arch to use the generic PCI setup functions. [bhelgaas: fold in Joao's pci-dma-compat.h & pci-bridge.h build fix (I should have caught this myself, sorry] Signed-off-by: Joao Pinto <jpinto@synopsys.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Vineet Gupta <vgupta@synopsys.com>
2015-10-28ARCv2: smp: [plat-*]: No need to explicitly call mcip_init_smp()Vineet Gupta1-3/+0
MCIP now registers it's own per cpu setup routine (for IPI IRQ request) using smp_ops.init_irq_cpu(). So no need for platforms to do that. This now completely decouples platforms from MCIP. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-10-28ARCv2: smp: [plat-*]: No need to explicitly call mcip_init_early_smp()Vineet Gupta1-5/+0
MCIP now registers it's own probe callback with smp_ops.init_early_smp() which is called by ARC common code, so no need for platforms to do that. This decouples the platforms and MCIP and helps confine MCIP details to it's own file. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-09-12ARCv2: [axs103_smp] Reduce clk for SMP FPGA configsVineet Gupta1-0/+2
Newer bitfiles needs the reduced clk even for SMP builds Cc: <stable@vger.kernel.org> #4.2 Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-08-20ARC: add/fix some comments in code - no functional changeVineet Gupta1-1/+1
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-08-04ARCv2: [axs103_smp] Reduce clk for Quad FPGA configsVineet Gupta1-0/+15
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-25ARCv2: [vdk] dts files and defconfig for HS38 VDKRuud Derwig1-0/+8
- 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 Gupta2-11/+200
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] Add missing __init annotationsVineet Gupta1-6/+6
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19ARC: [axs101] Tweak DDR port aperture mappings for performanceVineet Gupta1-4/+4
Route all MB originated traffic to DDR Port 1 and keep Port 0 for CPU traffic only Basic system parameters -------------------------------------------------------------------------------------- Host OS Description Mhz tlb cache mem scal pages line par load bytes ----------------- ------------- --------------------------------------- ---- ----- ----- ------ ---- axs101-sd-2-new-f Linux 3.13.0+ axs101-sd-2-new-fw-old-img-rerun 739 8 32 1.1100 1 axs101-sd-3-arc-3 Linux 3.13.9+ axs101-sd-3-arc-3.13-tip-regression 735 8 32 1.1000 1 axs101-sd-9-diffe Linux 3.13.11 axs101-sd-9-different-tweak 740 8 32 1.0000 1 Processor, Processes - times in microseconds - smaller is better ------------------------------------------------------------------------------ Host OS Mhz null null open slct sig sig fork exec sh call I/O stat clos TCP inst hndl proc proc proc --------- ------------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- axs101-sd Linux 3.13.0+ 739 0.50 0.88 5.38 14.6 34.1 0.92 5.18 2135 6555 12.K axs101-sd Linux 3.13.9+ 735 0.50 0.90 5.89 19.2 81.4 0.94 4.08 2560 8559 15.K axs101-sd Linux 3.13.11 740 0.50 0.88 4.45 17.8 34.4 0.94 3.25 2052 6493 12.K ^^^^ ^^^^ Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19ARC: [axs101] Add support for AXS101 SDP (software development platform)Alexey Brodkin3-0/+342
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>
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