linux.git/arch/mips/generic, branch v4.19

MIPS: Remove obsolete MIPS checks for DST node "chosen@0"

2018-08-06T16:50:33+00:00

As there is precious little left in any DTS files referring to the
node "/chosen@0" as opposed to "/chosen", remove the two checks for
the former node name.

[paul.burton@mips.com:
  The modified yamon-dt code only operates on
  arch/mips/boot/dts/mti/sead3.dts right now, and that uses chosen
  rather than chosen@0 anyway, so this should have no behavioural
  effect.]

Signed-off-by: Robert P. J. Day 
Signed-off-by: Paul Burton 
Patchwork: https://patchwork.linux-mips.org/patch/20131/
Cc: linux-mips@linux-mips.org

MIPS: generic: fix missing of_node_put()

2018-07-28T02:48:57+00:00

of_find_compatible_node() returns a device_node pointer with refcount
incremented and must be decremented explicitly.
 As this code is using the result only to check presence of the interrupt
controller (!NULL) but not actually using the result otherwise the
refcount can be decremented here immediately again.

Signed-off-by: Nicholas Mc Guire 
Signed-off-by: Paul Burton 
Patchwork: https://patchwork.linux-mips.org/patch/19820/
Cc: Ralf Baechle 
Cc: James Hogan 
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org

mips: mscc: build FIT image for Ocelot

2018-07-25T00:42:19+00:00

Ocelot now has a u-boot port, allow building FIT images instead of relying
on the legacy detection and builtin DTB.

Signed-off-by: Alexandre Belloni 
Reviewed-by: James Hogan 
Signed-off-by: Paul Burton 
Patchwork: https://patchwork.linux-mips.org/patch/19632/
Cc: Ralf Baechle 
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org

MIPS: generic: remove unnecessary of_platform_populate call

2018-06-24T16:27:27+00:00

The DT core will call of_platform_populate, so it is not necessary for
arch specific code to call it unless there are custom match entries,
auxdata or parent device. Neither of those apply here, so remove the call.

Cc: Paul Burton 
Cc: Ralf Baechle 
Cc: James Hogan 
Cc: linux-mips@linux-mips.org
Signed-off-by: Rob Herring 
Patchwork: https://patchwork.linux-mips.org/patch/19591/
Signed-off-by: Paul Burton 
Cc: linux-kernel@vger.kernel.org

MIPS: xilfpga: Actually include FDT in fitImage

2018-05-14T22:54:25+00:00

Commit b35565bb16a5 ("MIPS: generic: Add support for MIPSfpga") added
and its.S file for xilfpga but forgot to add it to
arch/mips/generic/Platform so it is never used.

Fixes: b35565bb16a5 ("MIPS: generic: Add support for MIPSfpga")
Signed-off-by: Alexandre Belloni 
Cc: Ralf Baechle 
Cc: linux-mips@linux-mips.org
Cc:  # 4.15+
Patchwork: https://patchwork.linux-mips.org/patch/19245/
Signed-off-by: James Hogan

MIPS: generic: Add support for Microsemi Ocelot

2018-03-21T23:33:10+00:00

Introduce support for the MIPS based Microsemi Ocelot SoCs.

Signed-off-by: Alexandre Belloni 
Cc: Ralf Baechle 
Cc: Allan Nielsen 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/18858/
[jhogan@kernel.org: update ocelot_defconfig specification]
Signed-off-by: James Hogan

MIPS: Generic: Support GIC in EIC mode

2018-02-05T14:36:03+00:00

The GIC supports running in External Interrupt Controller (EIC) mode,
and will signal this via cpu_has_veic if enabled in hardware. Currently
the generic kernel will panic if cpu_has_veic is set - but the GIC can
legitimately set this flag if either configured to boot in EIC mode, or
if the GIC driver enables this mode. Make the kernel not panic in this
case, and instead just check if the GIC is present. If so, use it's CPU
local interrupt routing functions. If an EIC is present, but it is not
the GIC, then the kernel does not know how to get the VIRQ for the CPU
local interrupts and should panic. Support for alternative EICs being
present is needed here for the generic kernel to support them.

Suggested-by: Paul Burton 
Signed-off-by: Matt Redfearn 
Cc: Ralf Baechle 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/18191/
Signed-off-by: James Hogan

MIPS: generic: Fix Makefile alignment

2018-02-05T10:39:56+00:00

Fix whitespace of generic platform Makefile so that obj-y values align.

Fixes: f2d0b0d5c171 ("MIPS: ranchu: Add Ranchu as a new generic-based board")
Signed-off-by: James Hogan 
Reviewed-by: Paul Burton 
Reviewed-by: Matt Redfearn 
Cc: Ralf Baechle 
Cc: Miodrag Dinic 
Cc: Goran Ferenc 
Cc: Aleksandar Markovic 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/18582/

MIPS: generic: Fix ranchu_of_match[] termination

2018-02-05T10:39:51+00:00

ranchu_of_match[] has no terminating element to end the search for a
matching compatible string when the first and only element does not
match, so add one now.

Fixes: f2d0b0d5c171 ("MIPS: ranchu: Add Ranchu as a new generic-based board")
Signed-off-by: James Hogan 
Reviewed-by: Paul Burton 
Reviewed-by: Matt Redfearn 
Cc: Ralf Baechle 
Cc: Miodrag Dinic 
Cc: Goran Ferenc 
Cc: Aleksandar Markovic 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/18581/

MIPS: ranchu: Add Ranchu as a new generic-based board

2018-01-22T20:47:34+00:00

Provide amendments to the MIPS generic platform framework so that
the new generic-based board Ranchu can be chosen to be built.

The Ranchu board is intended to be used by Android emulator. The name
"Ranchu" originates from Android development community. "Goldfish" and
"Ranchu" are terms used for two generations of virtual boards used by
Android emulator. The name "Ranchu" is a newer one among the two, and
this patch deals with Ranchu. However, for historical reasons, some
devices/drivers still contain the name "Goldfish".

MIPS Ranchu machine includes a number of Goldfish devices. The support
for Virtio devices is also included. Ranchu board supports up to 16
Virtio devices which can be attached using Virtio MMIO Bus. This is
summarized in the following picture:

       ABUS
        ||----MIPS CPU
        ||       |                    IRQs
        ||----Goldfish PIC------------(32)--------
        ||                     | | | | | | | | |
        ||----Goldfish TTY------ | | | | | | | |
        ||                       | | | | | | | |
        ||----Goldfish RTC-------- | | | | | | |
        ||                         | | | | | | |
        ||----Goldfish FB----------- | | | | | |
        ||                           | | | | | |
        ||----Goldfish Events--------- | | | | |
        ||                             | | | | |
        ||----Goldfish Audio------------ | | | |
        ||                               | | | |
        ||----Goldfish Battery------------ | | |
        ||                                 | | |
        ||----Android PIPE------------------ | |
        ||                                   | |
        ||----Virtio MMIO Bus                | |
        ||    |    |    |                    | |
        ||    |    |   (virtio-block)--------- |
        ||   (16)  |                           |
        ||    |   (virtio-net)------------------

Device Tree is created on the QEMU side based on the information about
devices IO map and IRQ numbers. Kernel will load this DTB using UHI
boot protocol DTB handover mode.

Signed-off-by: Miodrag Dinic 
Signed-off-by: Goran Ferenc 
Signed-off-by: Aleksandar Markovic 
Reviewed-by: James Hogan 
Cc: Ralf Baechle 
Cc: Paul Burton 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/18138/
Signed-off-by: James Hogan