linux-kernel - [PATCH 4/4] ARM: dts: ox810se: Add DMA Support

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Message-Id: <20220104145206.135524-5-narmstrong@baylibre.com>
Date:   Tue,  4 Jan 2022 15:52:06 +0100
From:   Neil Armstrong <narmstrong@...libre.com>
To:     vkoul@...nel.org
Cc:     linux-oxnas@...ups.io, dmaengine@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Neil Armstrong <narmstrong@...libre.com>
Subject: [PATCH 4/4] ARM: dts: ox810se: Add DMA Support

This adds the DMA engine node.

Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
---
 arch/arm/boot/dts/ox810se-wd-mbwe.dts |  4 ++++
 arch/arm/boot/dts/ox810se.dtsi        | 21 +++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/arch/arm/boot/dts/ox810se-wd-mbwe.dts b/arch/arm/boot/dts/ox810se-wd-mbwe.dts
index 7e2fcb220aea..19e5d510e425 100644
--- a/arch/arm/boot/dts/ox810se-wd-mbwe.dts
+++ b/arch/arm/boot/dts/ox810se-wd-mbwe.dts
@@ -103,6 +103,10 @@ rtc0: rtc@48 {
 	};
 };
 
+&dma {
+	status = "okay";
+};
+
 &uart1 {
 	status = "okay";
 
diff --git a/arch/arm/boot/dts/ox810se.dtsi b/arch/arm/boot/dts/ox810se.dtsi
index 0755e5864c4a..79b2b49dcfbb 100644
--- a/arch/arm/boot/dts/ox810se.dtsi
+++ b/arch/arm/boot/dts/ox810se.dtsi
@@ -334,6 +334,27 @@ timer0: timer@200 {
 					interrupts = <4 5>;
 				};
 			};
+
+			dma: dma-controller@...000 {
+				compatible = "oxsemi,ox810se-dma";
+				reg = <0x600000 0x100000>,
+				      <0xc00000 0x100000>;
+				reg-names = "dma", "sgdma";
+				interrupts = <13>, <14>, <15>, <16>, <20>;
+				clocks = <&stdclk 1>;
+				resets = <&reset 8>, <&reset 24>;
+				reset-names = "dma", "sgdma";
+
+				/* Encodes the authorized memory types */
+				oxsemi,targets-types =
+					<0x45900000 0x45a00000 0>,  /* SATA */
+					<0x42000000 0x43000000 0>,  /* SATA DATA */
+					<0x48000000 0x58000000 15>, /* DDR */
+					<0x58000000 0x58020000 15>; /* SRAM */
+
+				#dma-cells = <1>;
+				dma-channels = <5>;
+			};
 		};
 	};
 };
-- 
2.25.1