2022-05-26 10:51:04

by Paul Kocialkowski

Subject: [PATCH v4 3/7] ARM: dts: sun8i: v3s: Add mbus node to represent the interconnect

The V3s uses the mbus interconnect to provide DRAM access for a
number of blocks. The SoC can only map 2 GiB of DRAM, which is
reflected in the dma-ranges property.

Signed-off-by: Paul Kocialkowski <[email protected]>
---
arch/arm/boot/dts/sun8i-v3s.dtsi | 15 +++++++++++++++
1 file changed, 15 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-v3s.dtsi b/arch/arm/boot/dts/sun8i-v3s.dtsi
index 084323d5c61c..a966b6a9acf5 100644
--- a/arch/arm/boot/dts/sun8i-v3s.dtsi
+++ b/arch/arm/boot/dts/sun8i-v3s.dtsi
@@ -577,6 +577,21 @@ int_mii_phy: ethernet-phy@1 {
};
};

+ mbus: dram-controller@1c62000 {
+ compatible = "allwinner,sun8i-v3s-mbus";
+ reg = <0x01c62000 0x1000>,
+ <0x01c63000 0x1000>;
+ reg-names = "mbus", "dram";
+ clocks = <&ccu CLK_MBUS>,
+ <&ccu CLK_DRAM>,
+ <&ccu CLK_BUS_DRAM>;
+ clock-names = "mbus", "dram", "bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ dma-ranges = <0x00000000 0x40000000 0x80000000>;
+ #interconnect-cells = <1>;
+ };
+
spi0: spi@1c68000 {
compatible = "allwinner,sun8i-h3-spi";
reg = <0x01c68000 0x1000>;
--
2.36.1

2022-07-04 23:16:01

by Samuel Holland

Subject: Re: [PATCH v4 3/7] ARM: dts: sun8i: v3s: Add mbus node to represent the interconnect

On 5/25/22 1:58 PM, Paul Kocialkowski wrote:
> The V3s uses the mbus interconnect to provide DRAM access for a
> number of blocks. The SoC can only map 2 GiB of DRAM, which is
> reflected in the dma-ranges property.
>
> Signed-off-by: Paul Kocialkowski <[email protected]>

Reviewed-by: Samuel Holland <[email protected]>