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92 lines
3.5 KiB
Plaintext
92 lines
3.5 KiB
Plaintext
Hisilicon DSA Fabric device controller
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Required properties:
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- compatible: should be "hisilicon,hns-dsaf-v1" or "hisilicon,hns-dsaf-v2".
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"hisilicon,hns-dsaf-v1" is for hip05.
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"hisilicon,hns-dsaf-v2" is for Hi1610 and Hi1612.
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- mode: dsa fabric mode string. only support one of dsaf modes like these:
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"2port-64vf",
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"6port-16rss",
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"6port-16vf",
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"single-port".
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- interrupt-parent: the interrupt parent of this device.
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- interrupts: should contain the DSA Fabric and rcb interrupt.
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- reg: specifies base physical address(es) and size of the device registers.
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The first region is external interface control register base and size(optional,
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only used when subctrl-syscon does not exist). It is recommended using
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subctrl-syscon rather than this address.
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The second region is SerDes base register and size(optional, only used when
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serdes-syscon in port node does not exist). It is recommended using
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serdes-syscon rather than this address.
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The third region is the PPE register base and size.
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The fourth region is dsa fabric base register and size. It is not required for
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single-port mode.
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- reg-names: may be ppe-base and(or) dsaf-base. It is used to find the
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corresponding reg's index.
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- phy-handle: phy handle of physical port, 0 if not any phy device. It is optional
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attribute. If port node exists, phy-handle in each port node will be used.
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see ethernet.txt [1].
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- subctrl-syscon: is syscon handle for external interface control register.
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- reset-field-offset: is offset of reset field. Its value depends on the hardware
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user manual.
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- buf-size: rx buffer size, should be 16-1024.
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- desc-num: number of description in TX and RX queue, should be 512, 1024, 2048 or 4096.
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- port: subnodes of dsaf. A dsaf node may contain several port nodes(Depending
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on mode of dsaf). Port node contain some attributes listed below:
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- reg: is physical port index in one dsaf.
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- phy-handle: phy handle of physical port. It is not required if there isn't
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phy device. see ethernet.txt [1].
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- serdes-syscon: is syscon handle for SerDes register.
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- cpld-syscon: is syscon handle + register offset pair for cpld register. It is
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not required if there isn't cpld device.
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- port-rst-offset: is offset of reset field for each port in dsaf. Its value
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depends on the hardware user manual.
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- port-mode-offset: is offset of port mode field for each port in dsaf. Its
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value depends on the hardware user manual.
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- mc-mac-mask: mask of multicast address, determines bit in multicast address
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to set:
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1 stands for this bit will be precisely matched, TCAM will check this bit of
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MAC address.
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0 stands for this bit will be fuzzy matched, TCAM won't care about this bit
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of MAC address.
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[1] Documentation/devicetree/bindings/net/phy.txt
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Example:
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dsaf0: dsa@c7000000 {
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compatible = "hisilicon,hns-dsaf-v1";
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mode = "6port-16rss";
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interrupt-parent = <&mbigen_dsa>;
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reg = <0x0 0xc5000000 0x0 0x890000
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0x0 0xc7000000 0x0 0x60000>;
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reg-names = "ppe-base", "dsaf-base";
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subctrl-syscon = <&subctrl>;
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reset-field-offset = 0;
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interrupts = <131 4>,<132 4>, <133 4>,<134 4>,
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<135 4>,<136 4>, <137 4>,<138 4>,
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<139 4>,<140 4>, <141 4>,<142 4>,
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<143 4>,<144 4>, <145 4>,<146 4>,
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<147 4>,<148 4>, <384 1>,<385 1>,
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<386 1>,<387 1>, <388 1>,<389 1>,
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<390 1>,<391 1>,
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buf-size = <4096>;
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desc-num = <1024>;
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dma-coherent;
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port@0 {
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reg = 0;
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phy-handle = <&phy0>;
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serdes-syscon = <&serdes>;
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mc-mac-mask = [ff f0 00 00 00 00];
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};
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port@1 {
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reg = 1;
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serdes-syscon = <&serdes>;
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mc-mac-mask = [ff f0 00 00 00 00];
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};
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};
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