On 7/7/22 3:06 PM, Chanwoo Choi wrote: > Hi Samuel, > > On 22. 7. 2. 13:24, Samuel Holland wrote: >> All of the sunxi SoCs since at least the A33 have a similar structure >> for the MBUS and DRAM controller, but they all have minor differences in >> MBUS port assignments and DRAM controller behavior. Give each SoC its >> own compatible. >> >> Signed-off-by: Samuel Holland <samuel@xxxxxxxxxxxx> >> --- >> >> .../bindings/arm/sunxi/allwinner,sun4i-a10-mbus.yaml | 10 ++++++++++ >> 1 file changed, 10 insertions(+) >> >> 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 2b018feb56df..99566688d033 100644 >> --- a/Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-mbus.yaml >> +++ b/Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-mbus.yaml >> @@ -29,10 +29,20 @@ properties: >> compatible: >> enum: >> - allwinner,sun5i-a13-mbus >> + - allwinner,sun8i-a33-mbus >> + - allwinner,sun8i-a50-mbus >> + - allwinner,sun8i-a83t-mbus >> - allwinner,sun8i-h3-mbus >> - allwinner,sun8i-r40-mbus >> + - allwinner,sun8i-v3s-mbus >> + - allwinner,sun8i-v536-mbus >> + - allwinner,sun20i-d1-mbus >> - allwinner,sun50i-a64-mbus >> + - allwinner,sun50i-a100-mbus >> - allwinner,sun50i-h5-mbus >> + - allwinner,sun50i-h6-mbus >> + - allwinner,sun50i-h616-mbus >> + - allwinner,sun50i-r329-mbus >> >> reg: >> minItems: 1 > > I have a question. > Are there the device drivers for the newly added compatible? There are not DVFS drivers yet. However, the nodes are needed for their dma-ranges property, which affects some other devices that do have drivers. And at least for D1, the MBUS node is used for U-Boot's DRAM driver. Regards, Samuel
