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| author |   Peter Ujfalusi <peter.ujfalusi@ti.com> | 2014-05-16 15:17:16 +0300 |
|---|---|---|
| committer |   Sekhar Nori <nsekhar@ti.com> | 2014-05-22 14:55:19 +0530 |
| commit | efc24e148009bb7965439a3a29abfb778a45061e (patch) | |
| tree | e7ec23c422c9572356b7e5aadde64210e12c6a12 /Documentation/devicetree/bindings/dma | |
| parent | ARM: edma: Get IP configuration from HW (number of channels, tc, etc) (diff) | |
| download | linux-dev-efc24e148009bb7965439a3a29abfb778a45061e.tar.xz linux-dev-efc24e148009bb7965439a3a29abfb778a45061e.zip | |
dt/bindings: ti,edma: Remove redundant properties from documentation
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>
Diffstat (limited to 'Documentation/devicetree/bindings/dma')
| -rw-r--r-- | Documentation/devicetree/bindings/dma/ti-edma.txt | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/Documentation/devicetree/bindings/dma/ti-edma.txt b/Documentation/devicetree/bindings/dma/ti-edma.txt index 9fbbdb783a72..ad67c41c38df 100644 --- a/Documentation/devicetree/bindings/dma/ti-edma.txt +++ b/Documentation/devicetree/bindings/dma/ti-edma.txt @@ -2,11 +2,8 @@ TI EDMA Required properties: - compatible : "ti,edma3" -- ti,edma-regions: Number of regions -- ti,edma-slots: Number of slots - #dma-cells: Should be set to <1> Clients should use a single channel number per DMA request. -- dma-channels: Specify total DMA channels per CC - reg: Memory map for accessing module - interrupt-parent: Interrupt controller the interrupt is routed through - 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,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: edma: edma@49000000 { @@ -26,9 +30,6 @@ edma: edma@49000000 { compatible = "ti,edma3"; ti,hwmods = "tpcc", "tptc0", "tptc1", "tptc2"; #dma-cells = <1>; - dma-channels = <64>; - ti,edma-regions = <4>; - ti,edma-slots = <256>; ti,edma-xbar-event-map = <1 12 2 13>; }; |