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| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2013-08-02 16:50:36 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2013-08-27 10:55:09 +0200 |
| commit | 4981c4dc194efb18f0e9a02f1b43e926f2f0d2bb (patch) | |
| tree | 8c8543ecbd41100bc2d16ee957537ff2e7c20592 /Documentation | |
| parent | DMA: shdma: make a pointer const (diff) | |
| download | linux-4981c4dc194efb18f0e9a02f1b43e926f2f0d2bb.tar.xz linux-4981c4dc194efb18f0e9a02f1b43e926f2f0d2bb.zip | |
DMA: shdma: switch DT mode to use configuration data from a match table
This facilitates DMAC DT support by eliminating the need in AUXDATA and
avoiding creating complex DT data. This also fits well with DMAC devices,
of which SoCs often have multiple identical copies and it is perfectly
valid to use a single configuration data set for all of them.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/dma/shdma.txt | 61 |
1 files changed, 35 insertions, 26 deletions
diff --git a/Documentation/devicetree/bindings/dma/shdma.txt b/Documentation/devicetree/bindings/dma/shdma.txt index c15994aa1939..2a3f3b8946b9 100644 --- a/Documentation/devicetree/bindings/dma/shdma.txt +++ b/Documentation/devicetree/bindings/dma/shdma.txt @@ -22,42 +22,51 @@ Optional properties (currently unused): * DMA controller Required properties: -- compatible: should be "renesas,shdma" +- compatible: should be of the form "renesas,shdma-<soc>", where <soc> should + be replaced with the desired SoC model, e.g. + "renesas,shdma-r8a73a4" for the system DMAC on r8a73a4 SoC Example: - dmac: dma-mux0 { + dmac: dma-multiplexer@0 { compatible = "renesas,shdma-mux"; #dma-cells = <1>; - dma-channels = <6>; + dma-channels = <20>; dma-requests = <256>; - reg = <0 0>; /* Needed for AUXDATA */ - #address-cells = <1>; - #size-cells = <1>; + #address-cells = <2>; + #size-cells = <2>; ranges; - dma0: shdma@fe008020 { - compatible = "renesas,shdma"; - reg = <0xfe008020 0x270>, - <0xfe009000 0xc>; + dma0: dma-controller@e6700020 { + compatible = "renesas,shdma-r8a73a4"; + reg = <0 0xe6700020 0 0x89e0>; interrupt-parent = <&gic>; - interrupts = <0 34 4 - 0 28 4 - 0 29 4 - 0 30 4 - 0 31 4 - 0 32 4 - 0 33 4>; + interrupts = <0 220 4 + 0 200 4 + 0 201 4 + 0 202 4 + 0 203 4 + 0 204 4 + 0 205 4 + 0 206 4 + 0 207 4 + 0 208 4 + 0 209 4 + 0 210 4 + 0 211 4 + 0 212 4 + 0 213 4 + 0 214 4 + 0 215 4 + 0 216 4 + 0 217 4 + 0 218 4 + 0 219 4>; interrupt-names = "error", "ch0", "ch1", "ch2", "ch3", - "ch4", "ch5"; - }; - - dma1: shdma@fe018020 { - ... - }; - - dma2: shdma@fe028020 { - ... + "ch4", "ch5", "ch6", "ch7", + "ch8", "ch9", "ch10", "ch11", + "ch12", "ch13", "ch14", "ch15", + "ch16", "ch17", "ch18", "ch19"; }; }; |