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-rw-r--r--arm64-a64-mbus.patch69
1 files changed, 69 insertions, 0 deletions
diff --git a/arm64-a64-mbus.patch b/arm64-a64-mbus.patch
new file mode 100644
index 000000000..46efa29cf
--- /dev/null
+++ b/arm64-a64-mbus.patch
@@ -0,0 +1,69 @@
+From daae9f66b29a04a94708b1b5a9b61e3ee14df031 Mon Sep 17 00:00:00 2001
+From: Jernej Skrabec <jernej.skrabec@siol.net>
+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 <robh@kernel.org>
+Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ .../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 <jernej.skrabec@siol.net>
+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 <jernej.skrabec@siol.net>
+Signed-off-by: Maxime Ripard <maxime@cerno.tech>
+---
+ 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
+