On Wed, Jun 11, 2014 at 10:49:55AM +0200, Linus Walleij wrote: > The DMA40 device tree documentation was vague on the second cell passed > in the configuration node for consumers, and did not specify what the > available signals were connected to. Extend the documentation with this > information for the DB8500 ASIC. Applied, thanks > 1 file changed, 72 insertions(+), 2 deletions(-) > > diff --git a/Documentation/devicetree/bindings/dma/ste-dma40.txt b/Documentation/devicetree/bindings/dma/ste-dma40.txt > index 1f5729f10621..95800ab37bb0 100644 > --- a/Documentation/devicetree/bindings/dma/ste-dma40.txt > +++ b/Documentation/devicetree/bindings/dma/ste-dma40.txt > @@ -35,9 +35,11 @@ Required properties: > > Each dmas request consists of 4 cells: > 1. A phandle pointing to the DMA controller > - 2. Device Type > + 2. Device signal number, the signal line for single and burst requests > + connected from the device to the DMA40 engine > 3. The DMA request line number (only when 'use fixed channel' is set) > - 4. A 32bit mask specifying; mode, direction and endianness [NB: This list will grow] > + 4. A 32bit mask specifying; mode, direction and endianness > + [NB: This list will grow] > 0x00000001: Mode: > Logical channel when unset > Physical channel when set > @@ -54,6 +56,74 @@ Each dmas request consists of 4 cells: > Normal priority when unset > High priority when set > > +Existing signal numbers for the DB8500 ASIC. Unless specified, the signals are > +bidirectional, i.e. the same for RX and TX operations: > + > +0: SPI controller 0 > +1: SD/MMC controller 0 (unused) > +2: SD/MMC controller 1 (unused) > +3: SD/MMC controller 2 (unused) > +4: I2C port 1 > +5: I2C port 3 > +6: I2C port 2 > +7: I2C port 4 > +8: Synchronous Serial Port SSP0 > +9: Synchronous Serial Port SSP1 > +10: Multi-Channel Display Engine MCDE RX > +11: UART port 2 > +12: UART port 1 > +13: UART port 0 > +14: Multirate Serial Port MSP2 > +15: I2C port 0 > +16: USB OTG in/out endpoints 7 & 15 > +17: USB OTG in/out endpoints 6 & 14 > +18: USB OTG in/out endpoints 5 & 13 > +19: USB OTG in/out endpoints 4 & 12 > +20: SLIMbus or HSI channel 0 > +21: SLIMbus or HSI channel 1 > +22: SLIMbus or HSI channel 2 > +23: SLIMbus or HSI channel 3 > +24: Multimedia DSP SXA0 > +25: Multimedia DSP SXA1 > +26: Multimedia DSP SXA2 > +27: Multimedia DSP SXA3 Interesting, So you have a DSP and Slimbus?? -- ~Vinod -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
