From: Jernej Skrabec <jernej.skrabec@siol.net>
To: mripard@kernel.org, wens@csie.org
Cc: mchehab@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com,
linux-media@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com
Subject: [PATCH 3/5] arm64: dts: allwinner: a64: Add MBUS controller node
Date: Sat, 25 Jan 2020 12:03:51 +0100 [thread overview]
Message-ID: <20200125110353.591658-4-jernej.skrabec@siol.net> (raw)
In-Reply-To: <20200125110353.591658-1-jernej.skrabec@siol.net>
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 <jernej.skrabec@siol.net>
---
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..d225ea1f3b87 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 CLK_MBUS>;
+ dma-ranges = <0x00000000 0x40000000 0xc0000000>;
+ #interconnect-cells = <1>;
+ };
+
csi: csi@1cb0000 {
compatible = "allwinner,sun50i-a64-csi";
reg = <0x01cb0000 0x1000>;
--
2.25.0
next prev parent reply other threads:[~2020-01-25 11:04 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-25 11:03 [PATCH 0/5] arm64: dts: allwinner: a64: Enable deinterlace core Jernej Skrabec
2020-01-25 11:03 ` [PATCH 1/5] dt-bindings: interconnect: sunxi: Add A64 MBUS compatible Jernej Skrabec
2020-02-03 15:49 ` Rob Herring
2020-01-25 11:03 ` [PATCH 2/5] clk: sunxi-ng: a64: Export MBUS clock Jernej Skrabec
2020-01-25 11:03 ` Jernej Skrabec [this message]
2020-01-27 14:59 ` [PATCH 3/5] arm64: dts: allwinner: a64: Add MBUS controller node Maxime Ripard
2020-01-27 19:05 ` Jernej Škrabec
2020-01-25 11:03 ` [PATCH 4/5] media: dt-bindings: media: Add Allwinner A64 deinterlace compatible Jernej Skrabec
2020-02-03 15:50 ` Rob Herring
2020-01-25 11:03 ` [PATCH 5/5] arm64: dts: allwinner: a64: Add deinterlace core node Jernej Skrabec
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