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dt/bindings: ti,edma: Remove redundant properties from documentation

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From CCCFG register of eDMA3 we can get all the needed information for the
driver about the IP:
Number of channels: NUM_DMACH
Number of regions: NUM_REGN
Number of slots (PaRAM sets): NUM_PAENTRY
Number of TC/EQ: NUM_EVQUE

The ti,edma-regions; ti,edma-slots and dma-channels in DT are
redundant since the very same information can be obtained from the HW.
The mentioned properties are deprecated.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
This commit is contained in:
Peter Ujfalusi
2014-05-16 15:17:16 +03:00
committed by Sekhar Nori
parent 6d10c3950b
commit efc24e1480
1 changed files with 7 additions and 6 deletions
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13
Documentation/devicetree/bindings/dma/ti-edma.txt
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@ -2,11 +2,8 @@ TI EDMA
Required properties: Required properties:
- compatible : "ti,edma3" - compatible : "ti,edma3"
- ti,edma-regions: Number of regions
- ti,edma-slots: Number of slots
- #dma-cells: Should be set to <1> - #dma-cells: Should be set to <1>
Clients should use a single channel number per DMA request. Clients should use a single channel number per DMA request.
- dma-channels: Specify total DMA channels per CC
- reg: Memory map for accessing module - reg: Memory map for accessing module
- interrupt-parent: Interrupt controller the interrupt is routed through - interrupt-parent: Interrupt controller the interrupt is routed through
- interrupts: Exactly 3 interrupts need to be specified in the order: - interrupts: Exactly 3 interrupts need to be specified in the order:
@ -17,6 +14,13 @@ Optional properties:
- ti,hwmods: Name of the hwmods associated to the EDMA - ti,hwmods: Name of the hwmods associated to the EDMA
- ti,edma-xbar-event-map: Crossbar event to channel map - ti,edma-xbar-event-map: Crossbar event to channel map
Deprecated properties:
Listed here in case one wants to boot an old kernel with new DTB. These
properties might need to be added to the new DTS files.
- ti,edma-regions: Number of regions
- ti,edma-slots: Number of slots
- dma-channels: Specify total DMA channels per CC
Example: Example:
edma: edma@49000000 { edma: edma@49000000 {
@ -26,9 +30,6 @@ edma: edma@49000000 {
compatible = "ti,edma3"; compatible = "ti,edma3";
ti,hwmods = "tpcc", "tptc0", "tptc1", "tptc2"; ti,hwmods = "tpcc", "tptc0", "tptc1", "tptc2";
#dma-cells = <1>; #dma-cells = <1>;
dma-channels = <64>;
ti,edma-regions = <4>;
ti,edma-slots = <256>;
ti,edma-xbar-event-map = <1 12 ti,edma-xbar-event-map = <1 12
2 13>; 2 13>;
}; };