[PATCH v2 02/10] ARM: DTS: dra7: Enable eDMA
STALE3827d
From: Peter Ujfalusi <hidden>
Date: 2016-03-07 15:20:38
Also in:
linux-devicetree, linux-omap, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
Revision v2 of 2 in this series.
Revisions (2)
- v1 [diff vs current]
- v2 current
DRA7 family has eDMA available along with the sDMA and in some cases it is better suited for servicing peripherals. Add the needed nodes for eDMA to be usable: edma-tpcc, edma-tptc0/1 and the edma-xbar. Signed-off-by: Peter Ujfalusi <redacted> --- arch/arm/boot/dts/dra7.dtsi | 48 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+)
diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
index db7fda97a4fa..b99f51288e71 100644
--- a/arch/arm/boot/dts/dra7.dtsi
+++ b/arch/arm/boot/dts/dra7.dtsi@@ -170,6 +170,15 @@ ti,dma-safe-map = <0>; dma-masters = <&sdma>; }; + + edma_xbar: dma-router at c78 { + compatible = "ti,dra7-dma-crossbar"; + reg = <0xc78 0x7c>; + #dma-cells = <2>; + dma-requests = <204>; + ti,dma-safe-map = <0>; + dma-masters = <&edma>; + }; }; cm_core_aon: cm_core_aon at 5000 {
@@ -324,6 +333,45 @@ dma-requests = <127>; }; + edma: edma at 43300000 { + compatible = "ti,edma3-tpcc"; + ti,hwmods = "tpcc"; + reg = <0x43300000 0x100000>; + reg-names = "edma3_cc"; + interrupts = <GIC_SPI 361 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 360 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 359 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "edma3_ccint", "emda3_mperr", + "edma3_ccerrint"; + dma-requests = <64>; + #dma-cells = <2>; + + ti,tptcs = <&edma_tptc0 7>, <&edma_tptc1 0>; + + /* + * memcpy is disabled, can be enabled with: + * ti,edma-memcpy-channels = <20 21>; + * for example. Note that these channels need to be + * masked in the xbar as well. + */ + }; + + edma_tptc0: tptc at 43400000 { + compatible = "ti,edma3-tptc"; + ti,hwmods = "tptc0"; + reg = <0x43400000 0x100000>; + interrupts = <GIC_SPI 370 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "edma3_tcerrint"; + }; + + edma_tptc1: tptc at 43500000 { + compatible = "ti,edma3-tptc"; + ti,hwmods = "tptc1"; + reg = <0x43500000 0x100000>; + interrupts = <GIC_SPI 371 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "edma3_tcerrint"; + }; + gpio1: gpio at 4ae10000 { compatible = "ti,omap4-gpio"; reg = <0x4ae10000 0x200>;
--
2.7.2