1. 29 Jun, 2017 33 commits
  2. 28 Jun, 2017 7 commits
    • Huacai Chen's avatar
      MIPS: Loongson: Add Loongson-3A R3 basic support · 0a00024d
      Huacai Chen authored
      Loongson-3A R3 is very similar to Loongson-3A R2.
      
      All Loongson-3 CPU family:
      
      Code-name       Brand-name       PRId
      Loongson-3A R1  Loongson-3A1000  0x6305
      Loongson-3A R2  Loongson-3A2000  0x6308
      Loongson-3A R3  Loongson-3A3000  0x6309
      Loongson-3B R1  Loongson-3B1000  0x6306
      Loongson-3B R2  Loongson-3B1500  0x6307
      Signed-off-by: default avatarHuacai Chen <chenhc@lemote.com>
      Cc: John Crispin <john@phrozen.org>
      Cc: Steven J . Hill <Steven.Hill@cavium.com>
      Cc: Fuxin Zhang <zhangfx@lemote.com>
      Cc: Zhangjin Wu <wuzhangjin@gmail.com>
      Cc: linux-mips@linux-mips.org
      Patchwork: https://patchwork.linux-mips.org/patch/16585/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      0a00024d
    • Paul Burton's avatar
      MIPS: SEAD-3: Fix GIC interrupt specifiers · d3f61634
      Paul Burton authored
      The various interrupt specifiers in the device tree are not in a valid
      format for the MIPS GIC interrupt controller binding. Where each
      interrupt should provide 3 values - GIC_LOCAL or GIC_SHARED, the
      pin number & the type of interrupt - the device tree was only providing
      the pin number. This causes interrupts for those devices to not be used
      when a GIC is present. SEAD-3 systems without a GIC are unaffected since
      the DT fixup code generates interrupt specifiers that are valid for the
      CPU interrupt controller.
      
      Fix this by adding the GIC_SHARED & IRQ_TYPE_LEVEL_HIGH values to each
      interrupt specifier.
      Signed-off-by: default avatarPaul Burton <paul.burton@imgtec.com>
      Fixes: c11e3b48 ("MIPS: SEAD3: Probe UARTs using DT")
      Fixes: a34e9388 ("MIPS: SEAD3: Probe ethernet controller using DT")
      Fixes: 7afd2a5a ("MIPS: SEAD3: Probe EHCI controller using DT")
      Cc: linux-mips@linux-mips.org
      Cc: stable@vger.kernel.org  # v4.9+
      Patchwork: https://patchwork.linux-mips.org/patch/16189/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      d3f61634
    • Paul Burton's avatar
      MIPS: SEAD-3: Set interrupt-parent per-device, not at root node · fbdc674b
      Paul Burton authored
      The SEAD-3 board may be configured with or without a MIPS Global
      Interrupt Controller (GIC). Because of this we have a device tree with a
      default case of a GIC present, and code to fixup the device tree based
      upon a configuration register that indicates the presence of the GIC.
      
      In order to keep this DT fixup code simple, the interrupt-parent
      property was specified at the root node of the SEAD-3 DT, allowing the
      fixup code to simply change this property to the phandle of the CPU
      interrupt controller if a GIC is not present & affect all
      interrupt-using devices at once. This however causes a problem if we do
      have a GIC & the device tree is used as-is, because the interrupt-parent
      property of the root node applies to the CPU interrupt controller node.
      This causes a cycle when of_irq_init() attempts to probe interrupt
      controllers in order and boots fail due to a lack of configured
      interrupts, with this message printed on the kernel console:
      
      [    0.000000] OF: of_irq_init: children remain, but no parents
      
      Fix this by removing the interrupt-parent property from the DT root node
      & instead setting it for each device which uses interrupts, ensuring
      that the CPU interrupt controller node has no interrupt-parent &
      allowing of_irq_init() to identify it as the root interrupt controller.
      Signed-off-by: default avatarPaul Burton <paul.burton@imgtec.com>
      Reported-by: default avatarKeng Koh <keng.koh@imgtec.com>
      Cc: linux-mips@linux-mips.org
      Patchwork: https://patchwork.linux-mips.org/patch/16187/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      fbdc674b
    • Paul Burton's avatar
      MIPS: generic: Add a MAINTAINERS entry · 032a469b
      Paul Burton authored
      Add an entry to MAINTAINERS for the generic platform code, such that
      relevant people, starting with myself, can be CC'd on patches.
      Signed-off-by: default avatarPaul Burton <paul.burton@imgtec.com>
      Cc: linux-mips@linux-mips.org
      Patchwork: https://patchwork.linux-mips.org/patch/16186/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      032a469b
    • Paul Burton's avatar
      MIPS: generic: Set RTC_ALWAYS_BCD to 0 · ae7ce6b1
      Paul Burton authored
      Drivers for the mc146818 RTC generally check control registers to
      determine whether a value is encoded as binary or as a binary coded
      decimal. Setting RTC_ALWAYS_BCD to 1 effectively bypasses these checks
      and causes drivers to always expect binary coded decimal values,
      regardless of control register values.
      
      This does not seem like a sane default - defaulting to 0 allows the
      drivers to check control registers to determine encoding type & allows
      the driver to work generically with both binary & BCD encodings. Set
      this in mach-generic/mc146818rtc.h such that the generic kernel, or
      platforms which don't provide a custom mc146818rtc.h, can have an RTC
      driver which works with both encodings.
      Signed-off-by: default avatarPaul Burton <paul.burton@imgtec.com>
      Cc: linux-mips@linux-mips.org
      Patchwork: https://patchwork.linux-mips.org/patch/16185/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      ae7ce6b1
    • Paul Burton's avatar
      MIPS: generic: Abstract FDT fixup application · e889dfca
      Paul Burton authored
      Introduce an apply_mips_fdt_fixups() function which can apply fixups to
      an FDT based upon an array of fixup descriptions. This abstracts that
      functionality such that legacy board code can apply FDT fixups without
      requiring lots of duplication.
      Signed-off-by: default avatarPaul Burton <paul.burton@imgtec.com>
      Cc: linux-mips@linux-mips.org
      Patchwork: https://patchwork.linux-mips.org/patch/16184/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      e889dfca
    • Paul Burton's avatar
      MIPS: generic/yamon-dt: Use serial* rather than uart* aliases · c3d62fc6
      Paul Burton authored
      Name aliases in the SEAD-3 device tree serial0 & serial1, rather than
      uart0 & uart1. This allows the core serial code to make use of the
      aliases to ensure that the UARTs are consistently numbered as expected
      rather than having the numbering depend upon probe order.
      
      When translating YAMON-provided serial configuration to a device tree
      stdout-path property adjust accordingly, such that we continue to
      reference a valid alias.
      Signed-off-by: default avatarPaul Burton <paul.burton@imgtec.com>
      Cc: linux-mips@linux-mips.org
      Patchwork: https://patchwork.linux-mips.org/patch/16183/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      c3d62fc6