AuxXxilium/linux_dsm_epyc7002
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ARM: dts: sunxi: h3/h5: Add MBUS controller node

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Both, H3 and H5, contain 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.

Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
This commit is contained in:
Jernej Skrabec 2019-10-24 00:13:29 +02:00 committed by Maxime Ripard
parent ab883313ef
commit 66e40b3517
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1 changed files with 9 additions and 0 deletions
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9
arch/arm/boot/dts/sunxi-h3-h5.dtsi
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@ -109,6 +109,7 @@ soc {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
dma-ranges;
ranges;
display_clocks: clock@1000000 {
@ -543,6 +544,14 @@ external_mdio: mdio@2 {
};
};
mbus: dram-controller@1c62000 {
compatible = "allwinner,sun8i-h3-mbus";
reg = <0x01c62000 0x1000>;
clocks = <&ccu 113>;
dma-ranges = <0x00000000 0x40000000 0xc0000000>;
#interconnect-cells = <1>;
};
spi0: spi@1c68000 {
compatible = "allwinner,sun8i-h3-spi";
reg = <0x01c68000 0x1000>;