On Thu, Sep 18, 2014 at 11:24 AM, Chen-Yu Tsai <wens@xxxxxxxx> wrote: > Hi everyone, > > This is v2 of my sun8i DMA controller support series. This series > adds support for the DMA controller found in the Allwinner A23 SoC. > It is the same hardware as found in the A31 (sun6i) SoC. In addition > to reduced physical channels and endpoints, the controller in the A23 > requires an undocumented register to be toggled. That seems to allow > memory bus access. > > This series is based on my earlier "clk: sun6i: Unify AHB1 clock and > fix rate calculation" series, which removes the clock muxing calls from > the sun6i-dma driver. The default PLL6 pre-divider for AHB1 on the A23 > results in an exceedingly high clock rate for AHB1, and the system hangs. > Also, on the A23, the dma controller happily works even when AHB1 is > clocked from AXI. > > > Patch 1 changes the channel count macros into runtime data binded to > the DT compatible strings. It also gets rid of some hardcoded values > in the interrupt handler. > > Patch 2 adds the channel number data for the A23 (sun8i), as well as > the undocumented register quirk. Hi, Vinod, Any chance we can get patches 1 & 2 merged? You've already merged the prerequisite patch "dmaengine: sun6i: Remove obsolete clk muxing code" a few days ago, and patch 3 is already in arm-soc. Thanks! ChenYu > Patch 3 adds the dma controller node, and related dma resources, to the > DT. > > Changes since v1: > > - Added Maxime's Acked-by for patch 1 > - Added macros for sun8i specific dma gating registers, and updated > comment to reflect its usage. > > > Cheers > ChenYu > > > Chen-Yu Tsai (3): > dmaengine: sun6i: support parameterized compatible strings > dmaengine: sun6i: Add support for Allwinner A23 (sun8i) variant > ARM: dts: sun8i: Add DMA controller node > > .../devicetree/bindings/dma/sun6i-dma.txt | 2 +- > arch/arm/boot/dts/sun8i-a23.dtsi | 19 ++++ > drivers/dma/Kconfig | 4 +- > drivers/dma/sun6i-dma.c | 123 +++++++++++++++------ > 4 files changed, 110 insertions(+), 38 deletions(-) > > -- > 2.1.0 > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
