ARM: sun8i: Add DMA controller support
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Cover letter [PATCH RESEND v2 0/2] ARM: sun8i: Add DMA controller support
Quoted 14 lines · Chen-Yu Tsai
Hi Vinod,
This is my sun8i DMA controller series rebased onto slave-dma/next (2ffff42 "dmaengine: xdmac: fix print warning on
dma_addr_tvariable")Original cover letter:
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.
Quoted 6 lines
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.
Applied, thanks
Signature · 1 line
~Vinod