linux-kernel - [PATCH v2 04/66] ARM: dts: sun8i: v3s: Add mbus node to represent the interconnect

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Message-Id: <20220205185429.2278860-5-paul.kocialkowski@bootlin.com>
Date:   Sat,  5 Feb 2022 19:53:27 +0100
From:   Paul Kocialkowski <paul.kocialkowski@...tlin.com>
To:     linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        linux-kernel@...r.kernel.org, linux-phy@...ts.infradead.org,
        linux-clk@...r.kernel.org, linux-staging@...ts.linux.dev
Cc:     Yong Deng <yong.deng@...ewell.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Maxime Ripard <mripard@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Helen Koike <helen.koike@...labora.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: [PATCH v2 04/66] ARM: dts: sun8i: v3s: Add mbus node to represent the interconnect

The V3s uses the mbus interconnect to provide DRAM access for a
number of blocks. The SoC can only map 2 GiB of DRAM, which is
reflected in the dma-ranges property.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
---
 arch/arm/boot/dts/sun8i-v3s.dtsi | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-v3s.dtsi b/arch/arm/boot/dts/sun8i-v3s.dtsi
index 084323d5c61c..1b3048b6f197 100644
--- a/arch/arm/boot/dts/sun8i-v3s.dtsi
+++ b/arch/arm/boot/dts/sun8i-v3s.dtsi
@@ -577,6 +577,16 @@ int_mii_phy: ethernet-phy@1 {
 			};
 		};
 
+		mbus: dram-controller@...2000 {
+			compatible = "allwinner,sun8i-v3s-mbus";
+			reg = <0x01c62000 0x1000>;
+			clocks = <&ccu CLK_MBUS>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			dma-ranges = <0x00000000 0x40000000 0x80000000>;
+			#interconnect-cells = <1>;
+		};
+
 		spi0: spi@...8000 {
 			compatible = "allwinner,sun8i-h3-spi";
 			reg = <0x01c68000 0x1000>;
-- 
2.34.1