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Diffstat (limited to 'arm64-a64-mbus.patch')
| -rw-r--r-- | arm64-a64-mbus.patch | 69 |
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 + |