[PATCH v2 0/4] ARM: rockchip: add dma support

[Heiko Stübner]

All Rockchip SoCs currently supported use pl330 dma controllers.
The first patch introduces the concept of critical clocks, stolen from
sunxi, as some core clocks shouldn't be disabled under normal circumstances.
The patch is necessary, as the amba bus uses strict clock gating, which
without this patch results in the core aclk getting disabled halting the
system, before other components are able to probe and maybe claim their
clocks.

As the patches have no compile-time dependency on each other, the patchset
could be split with the first patch going through the clock tree and the
other three going through arm-soc.

changes since v1:
- address comment Sergei Shtylyov and rename nodes to dma-controller
- address comments from Doug Anderson:
  - order by address
  - rename the controller phandles to reflect the naming in the TRMs
    On the rk3066/rk3188 there is one diversion in this regard.
    The clocks really use indices 1 and 2 while the controllers references
    use 0 and 1 (dmac0 and dmac1), so to prevent to much confusion I used
    the clock indices for the handles instead of having dmac0 use ACLK_DMAC1
    etc.
- address comment from Andreas Färber adding suffixes of "_s" for the
  secure and "_ns" for the non-secure variants of the first controller
  As (nearly) all boards seem to use the secure controller, this becomes
  the default

Heiko Stuebner (4):
  clk: rockchip: protect critical clocks from getting disabled
  ARM: rockchip: enable the AMBA bus
  ARM: dts: rockchip: add rk3288 dma controllers
  ARM: dts: rockchip: add rk3188 dma controllers

 arch/arm/boot/dts/rk3288.dtsi     | 38 ++++++++++++++++++++++++++++++++++++++
 arch/arm/boot/dts/rk3xxx.dtsi     | 38 ++++++++++++++++++++++++++++++++++++++
 arch/arm/mach-rockchip/Kconfig    |  1 +
 drivers/clk/rockchip/clk-rk3188.c |  7 +++++++
 drivers/clk/rockchip/clk-rk3288.c |  7 +++++++
 drivers/clk/rockchip/clk.c        | 13 +++++++++++++
 drivers/clk/rockchip/clk.h        |  1 +
 7 files changed, 105 insertions(+)

-- 
1.9.0