[PATCH 0/5] Early DT and MVEBU DT fixups

[Sebastian Hesselbarth]

Historically, early Armada 370 and XP boards where shipped with u-boot
not remapping internal register base therefore the upstream dts files
reflect that. On barebox we always remap the internal register base to
0xf1000000 and use DT to parse devices, causing the upstream dts to
diverge from what we actually see. Currently, we work around the issue
by applying a barebox specific dts overlay to reflect the different
internal register base.

This patch set provides a way to call DT fixups early and apply them
even on pbl or appended DTs. This is required for Marvell MVEBU SoCs
which can (and do) remap their internal register base address.

First, a call to of_fix_tree() is added to of_arm_init() right before
of_probe() starts. This allows to apply early registered DT fixups.

Patch 2 extends mvebu-mbus to fixup mbus ranges identified by their
target ID and target attribute. Patch 3 adds the required internal
register ranges to be fixed up for each of the 4 supported MVEBU SoCs.
Patch 4 then removes the now redundant DT overlay workarounds.

Patch 5 finally installs another DT fixup to properly set directly
attached RAM sizes which can read from internal SoC registers. This
also removes a runtime warning caused by double-registration of RAM
resources from arm_add_memory_device() and of_add_memory() later.

Patches have been tested on Armada 370, Dove, and Kirkwood.

Sebastian Hesselbarth (5):
  ARM: execute OF fixups early
  ARM: mvebu: allow to fixup mbus ranges
  ARM: mvebu: add register remap for mbus ids
  ARM: dts: mvebu: remove mbus ranges overwrite
  ARM: mvebu: add fixup for directly attached memory

 arch/arm/cpu/dtb.c                             |  1 +
 arch/arm/dts/armada-370-mirabox-bb.dts         |  3 --
 arch/arm/dts/armada-xp-openblocks-ax3-4-bb.dts |  4 --
 arch/arm/mach-mvebu/armada-370-xp.c            |  5 +-
 arch/arm/mach-mvebu/common.c                   | 59 ++++++++++++++++++++
 arch/arm/mach-mvebu/dove.c                     |  6 ++-
 arch/arm/mach-mvebu/include/mach/common.h      |  2 +
 arch/arm/mach-mvebu/kirkwood.c                 |  5 +-
 drivers/bus/mvebu-mbus.c                       | 74 +++++++++++++++++++++++++-
 include/linux/mbus.h                           |  2 +
 10 files changed, 150 insertions(+), 11 deletions(-)

---
To: barebox at lists.infradead.org
To: Sebastian Hesselbarth <sebastian.hesselbarth at gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Cc: Ezequiel Garcia <ezequiel.garcia at free-electrons.com>
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