linux/arch/xtensa/boot, branch v4.9

xtensa: rearrange CCOUNT calibration

2016-09-21T01:52:59Z

DT-enabled kernel should have a CPU node connected to a clock. This clock is the CCOUNT clock. Use old platform_calibrate_ccount call as a fallback when CPU node cannot be found or has no clock and in non-DT-enabled configurations. Drop no longer needed code that updates CPU clock-frequency property in the DT; drop DT-related code from the platform_calibrate_ccount too. Move of_clk_init to the top of time_init, so that clocks are initialized before CCOUNT calibration is attempted. Signed-off-by: Max Filippov

xtensa: xtfpga: use clock provider, don't update DT

2016-09-21T01:52:51Z

Instead of querying hardcoded FPGA frequency register and then updating clock-frequency property in specificly named DT nodes in machine setup code register a clock provider that returns fixed-rate clock, configured by register specified in DT. This way we have less magic/hardcoded names and use more existing common clock framework code. Signed-off-by: Max Filippov Tested-by: Guenter Roeck

xtensa: Tweak xuartps UART driver Rx watermark for Cadence CSP config.

2016-09-19T18:51:32Z

Add module parameter xilinx_uartps.rx_trigger_level=32 to command line options for CSP to set Rx watermark for xuartps driver lower than the default value, to avoid UART overruns at 115200 bps. Signed-off-by: Scott Telford Signed-off-by: Max Filippov

xtensa: Added Cadence CSP kernel configuration for Xtensa

2016-09-10T01:39:09Z

Added defconfig, device tree and Xtensa variant header files for the Cadence Configurable System Platform "xt_lnx" processor configuration. Signed-off-by: Scott Telford Signed-off-by: Max Filippov

xtensa: cleanup MMU setup and kernel layout macros

2016-07-24T03:33:58Z

Make kernel load address explicit, independent of the selected MMU configuration and configurable from Kconfig. Do not restrict it to the first 512MB of the physical address space. Cleanup kernel memory layout macros: - rename VECBASE_RESET_VADDR to VECBASE_VADDR, XC_VADDR to VECTOR_VADDR; - drop VIRTUAL_MEMORY_ADDRESS and LOAD_MEMORY_ADDRESS; - introduce PHYS_OFFSET and use it in __va and __pa definitions; - synchronize MMU/noMMU vectors, drop unused NMI vector; - replace hardcoded vectors offset of 0x3000 with Kconfig symbol. Signed-off-by: Max Filippov

xtensa: xtfpga: fix earlycon endianness

2016-03-11T08:53:32Z

Serial port is attached to XTFPGA boards as native endian device, now that earlycon parameter parser understands mmio32native put it into earlycon kernel parameter. This makes early console functional on both little- and big-endian CPUs with identical kernel command lines. Signed-off-by: Max Filippov

xtensa: xtfpga: fix i2c controller register width and endianness

2016-03-11T08:53:32Z

I2C controller is attached to XTFPGA boards as native endian device, mark it as such in DTS. Set register width in DTS to 4, this way it works both for little- and big-endian CPUs. Signed-off-by: Max Filippov

xtensa: xtfpga: fix ethernet controller endianness

2016-03-11T08:53:31Z

Ethernet controller is attached to XTFPGA boards as native endian device, mark it as such in DTS and pass correct endianness in platform data. This makes network functional on big-endian CPUs. Signed-off-by: Max Filippov

xtensa: xtfpga: fix serial port register width and endianness

2016-03-11T08:53:31Z

Serial port is attached to XTFPGA boards as native endian device, mark it as such in DTS and pass correct endianness in platform data. Set register width in DTS to 4, this way it matches the platform data and works correctly on big-endian CPUs. Signed-off-by: Max Filippov

Merge tag 'xtensa-20151108' of git://github.com/czankel/xtensa-linux

2015-11-10T00:32:13Z

Pull xtensa updates from Chris Zankel: - fix remaining issues with noMMU cores - fix build for cores w/o cache or zero overhead loop options - fix boot of secondary cores in SMP configuration - add support for DMA to high memory pages - add dma_to_phys and phys_to_dma functions. * tag 'xtensa-20151108' of git://github.com/czankel/xtensa-linux: xtensa: implement dma_to_phys and phys_to_dma xtensa: support DMA to high memory Revert "xtensa: cache inquiry and unaligned cache handling functions" xtensa: drop unused sections and remapped reset handlers xtensa: fix secondary core boot in SMP xtensa: add FORCE_MAX_ZONEORDER to Kconfig xtensa: nommu: provide defconfig for de212 on kc705 xtensa: nommu: xtfpga: add kc705 DTS xtensa: add de212 core variant xtensa: nommu: select HAVE_FUTEX_CMPXCHG xtensa: nommu: fix default memory start address xtensa: nommu: provide correct KIO addresses xtensa: nommu: fix USER_RING definition xtensa: xtfpga: fix integer overflow in TASK_SIZE xtensa: fix build for configs without cache options xtensa: fixes for configs without loop option