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 <peter.ujfalusi@xxxxxx>
---
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 114286dbee25..d2d2568b5695 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@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@5000 {
@@ -324,6 +333,45 @@
dma-requests = <127>;
};
+ edma: edma@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@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@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@4ae10000 {
compatible = "ti,omap4-gpio";
reg = <0x4ae10000 0x200>;
--
2.7.1
--
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