On 02/06/14 14:42, Geert Uytterhoeven wrote:
> This patch series enables DMA support for QSPI on r8a7791/koelsch
> reference. It's independent from the series "ARM: shmobile: koelsch
> legacy: Enable DMA for QSPI", but it depends on the SHDMA work for r8a7790
> by Ben Dooks (cfr. "[PATCH v2 0/9] Updates Renesas OF-DMA code").
>
> Changes Compared to previous submission ("[PATCH/RFC 0/7] ARM: shmobile:
> r8a7791: Add preliminary DMA support"):
> - "[6/7] ARM: shmobile: r8a7791 dtsi: Enable DMA for MSIOF" was dropped,
> - 2/7 was added,
> - 7/7 was changed (see changelog in individual patch).
>
> This was tested on r8a7791/koelsch.
>
> Performance figures for reading from a QSPI FLASH driven at 24.375 MHz are:
> - Single: 1.1 Mbps PIO, 23 Mbps DMA
> - Dual : 12.7 Mbps PIO, 48 Mbps DMA
> - Quad : 13 Mbps PIO, 70 Mbps DMA
>
> Thanks for your comments!
>
> [1/7] DMA: shdma: Add r8a7791 support
> [2/7] DMA: shdma: Spelling s/controll/control/
> [3/7] ARM: shmobile: r8a7791 dtsi: add SYS-DMAC clocks
> [4/7] ARM: shmobile: r8a7791: Add SYS-DMAC channel definitions for bindings
> [5/7] ARM: shmobile: r8a7791 dtsi: Add SYS-DMAC0 and SYS-DMAC1 nodes
> [6/7] ARM: shmobile: koelsch dts: Enable sysdma0 and sysdma1
> [7/7] ARM: shmobile: r8a7791 dtsi: Enable DMA for QSPI
>
> Documentation/devicetree/bindings/dma/shdma.txt | 7 +-
> arch/arm/boot/dts/r8a7791-koelsch.dts | 8 ++
> arch/arm/boot/dts/r8a7791.dtsi | 79 ++++++++++++++++-
> drivers/dma/sh/shdmac.c | 1 +
> include/dt-bindings/dma/r8a7791-dma.h | 111 ++++++++++++++++++++++++
> 5 files changed, 201 insertions(+), 5 deletions(-)
> create mode 100644 include/dt-bindings/dma/r8a7791-dma.h
>
> Gr{oetje,eeting}s,
Hi, thanks for testing against the current DMA series, I will try
and get a new series out for you in the next few days with the
changes to use 1 parameter phandles instead of 2 parameter ones.
--
Ben Dooks http://www.codethink.co.uk/
Senior Engineer Codethink - Providing Genius
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