From daae9f66b29a04a94708b1b5a9b61e3ee14df031 Mon Sep 17 00:00:00 2001 From: Jernej Skrabec Date: Mon, 10 Feb 2020 18:06:52 +0100 Subject: [PATCH 1/2] dt-bindings: interconnect: sunxi: Add A64 MBUS compatible A64 contains MBUS controller. Add a compatible for it. Acked-by: Rob Herring Signed-off-by: Jernej Skrabec Signed-off-by: Maxime Ripard --- .../devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-mbus.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-mbus.yaml b/Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-mbus.yaml index 9370e64992dd..aa0738b4d534 100644 --- a/Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-mbus.yaml +++ b/Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-mbus.yaml @@ -30,6 +30,7 @@ properties: enum: - allwinner,sun5i-a13-mbus - allwinner,sun8i-h3-mbus + - allwinner,sun50i-a64-mbus reg: maxItems: 1 -- 2.24.1 From 410bb2be7e1f1d329c238e2d6d06b6c25dcee404 Mon Sep 17 00:00:00 2001 From: Jernej Skrabec Date: Mon, 10 Feb 2020 18:06:54 +0100 Subject: [PATCH 2/2] arm64: dts: allwinner: a64: Add MBUS controller node A64 contains MBUS, which is the bus used by DMA devices to access system memory. MBUS controller is responsible for arbitration between channels based on set priority and can do some other things as well, like report bandwidth used. It also maps RAM region to different address than CPU. Signed-off-by: Jernej Skrabec Signed-off-by: Maxime Ripard --- arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi index 862b47dc9dc9..251c91724de1 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi @@ -1061,6 +1061,14 @@ pwm: pwm@1c21400 { status = "disabled"; }; + mbus: dram-controller@1c62000 { + compatible = "allwinner,sun50i-a64-mbus"; + reg = <0x01c62000 0x1000>; + clocks = <&ccu 112>; + dma-ranges = <0x00000000 0x40000000 0xc0000000>; + #interconnect-cells = <1>; + }; + csi: csi@1cb0000 { compatible = "allwinner,sun50i-a64-csi"; reg = <0x01cb0000 0x1000>; -- 2.24.1