Paul Burton fbdc674ba3 MIPS: SEAD-3: Set interrupt-parent per-device, not at root node ... 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: Paul Burton <paul.burton@imgtec.com> Reported-by: Keng Koh <keng.koh@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/16187/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>		2017-06-28 12:22:41 +02:00
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board-sead3.c	MIPS: SEAD-3: Set interrupt-parent per-device, not at root node	2017-06-28 12:22:41 +02:00
init.c	MIPS: generic: Abstract FDT fixup application	2017-06-28 12:22:41 +02:00
irq.c	MIPS: generic: Introduce generic DT-based board support	2016-10-06 18:04:04 +02:00
Kconfig	MIPS: generic/yamon-dt: Pull YAMON DT shim code out of SEAD-3 board	2017-06-28 12:22:40 +02:00
kexec.c	MIPS: generic/kexec: add support for a DTB passed in a separate buffer	2017-01-03 16:34:46 +01:00
Makefile	MIPS: generic/yamon-dt: Pull YAMON DT shim code out of SEAD-3 board	2017-06-28 12:22:40 +02:00
Platform	MIPS: generic: Introduce generic DT-based board support	2016-10-06 18:04:04 +02:00
proc.c	MIPS: generic: Introduce generic DT-based board support	2016-10-06 18:04:04 +02:00
vmlinux.its.S	MIPS: generic: Introduce generic DT-based board support	2016-10-06 18:04:04 +02:00
yamon-dt.c	MIPS: generic/yamon-dt: Use serial* rather than uart* aliases	2017-06-28 12:22:41 +02:00