linux-kernel - [PATCH v6 06/10] arm64: dts: actions: Add DMA Controller for S700

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Date:   Sat, 18 Jul 2020 14:49:30 +0530
From:   Amit Singh Tomar <amittomer25@...il.com>
To:     andre.przywara@....com, afaerber@...e.de, vkoul@...nel.org,
        manivannan.sadhasivam@...aro.org, robh+dt@...nel.org
Cc:     dan.j.williams@...el.com, cristian.ciocaltea@...il.com,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-actions@...ts.infradead.org, devicetree@...r.kernel.org
Subject: [PATCH v6 06/10] arm64: dts: actions: Add DMA Controller for S700

This commit adds DMA controller present on Actions S700, it differs from
S900 in terms of number of dma channels and requests.

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Signed-off-by: Amit Singh Tomar <amittomer25@...il.com>
---
Changes since v5:
        * Added Mani's Reviewed-by: tag.
Changes since v4:
        * No change.
Changes since v3:
        * Fixed typo in commit message.
        * Placed owl-s700-powergate.h in alphabetical order.
Changes since v2:
        * added power-domain property as sps
          is enabled now and DMA needs it.
Changes since v1:
        * No Change.
Changes since RFC:
        * No Change.
---
 arch/arm64/boot/dts/actions/s700.dtsi | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/actions/s700.dtsi b/arch/arm64/boot/dts/actions/s700.dtsi
index f8eb72bb4125..2c78caebf515 100644
--- a/arch/arm64/boot/dts/actions/s700.dtsi
+++ b/arch/arm64/boot/dts/actions/s700.dtsi
@@ -5,6 +5,7 @@
 
 #include <dt-bindings/clock/actions,s700-cmu.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/power/owl-s700-powergate.h>
 #include <dt-bindings/reset/actions,s700-reset.h>
 
 / {
@@ -244,5 +245,19 @@
 				     <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
 		};
+
+		dma: dma-controller@...30000 {
+			compatible = "actions,s700-dma";
+			reg = <0x0 0xe0230000 0x0 0x1000>;
+			interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>;
+			#dma-cells = <1>;
+			dma-channels = <10>;
+			dma-requests = <44>;
+			clocks = <&cmu CLK_DMAC>;
+			power-domains = <&sps S700_PD_DMA>;
+		};
 	};
 };
-- 
2.7.4