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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/devicetree/bindings/net/hisilicon-hns-dsaf.txt | |
parent | Initial commit. (diff) | |
download | linux-upstream/5.10.209.tar.xz linux-upstream/5.10.209.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | Documentation/devicetree/bindings/net/hisilicon-hns-dsaf.txt | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/hisilicon-hns-dsaf.txt b/Documentation/devicetree/bindings/net/hisilicon-hns-dsaf.txt new file mode 100644 index 000000000..8ee4b1ced --- /dev/null +++ b/Documentation/devicetree/bindings/net/hisilicon-hns-dsaf.txt @@ -0,0 +1,90 @@ +Hisilicon DSA Fabric device controller + +Required properties: +- compatible: should be "hisilicon,hns-dsaf-v1" or "hisilicon,hns-dsaf-v2". + "hisilicon,hns-dsaf-v1" is for hip05. + "hisilicon,hns-dsaf-v2" is for Hi1610 and Hi1612. +- mode: dsa fabric mode string. only support one of dsaf modes like these: + "2port-64vf", + "6port-16rss", + "6port-16vf", + "single-port". +- interrupts: should contain the DSA Fabric and rcb interrupt. +- reg: specifies base physical address(es) and size of the device registers. + The first region is external interface control register base and size(optional, + only used when subctrl-syscon does not exist). It is recommended using + subctrl-syscon rather than this address. + The second region is SerDes base register and size(optional, only used when + serdes-syscon in port node does not exist). It is recommended using + serdes-syscon rather than this address. + The third region is the PPE register base and size. + The fourth region is dsa fabric base register and size. It is not required for + single-port mode. +- reg-names: may be ppe-base and(or) dsaf-base. It is used to find the + corresponding reg's index. + +- phy-handle: phy handle of physical port, 0 if not any phy device. It is optional + attribute. If port node exists, phy-handle in each port node will be used. + see ethernet.txt [1]. +- subctrl-syscon: is syscon handle for external interface control register. +- reset-field-offset: is offset of reset field. Its value depends on the hardware + user manual. +- buf-size: rx buffer size, should be 16-1024. +- desc-num: number of description in TX and RX queue, should be 512, 1024, 2048 or 4096. + +- port: subnodes of dsaf. A dsaf node may contain several port nodes(Depending + on mode of dsaf). Port node contain some attributes listed below: +- reg: is physical port index in one dsaf. +- phy-handle: phy handle of physical port. It is not required if there isn't + phy device. see ethernet.txt [1]. +- serdes-syscon: is syscon handle for SerDes register. +- cpld-syscon: is syscon handle + register offset pair for cpld register. It is + not required if there isn't cpld device. +- port-rst-offset: is offset of reset field for each port in dsaf. Its value + depends on the hardware user manual. +- port-mode-offset: is offset of port mode field for each port in dsaf. Its + value depends on the hardware user manual. +- mc-mac-mask: mask of multicast address, determines bit in multicast address + to set: + 1 stands for this bit will be precisely matched, TCAM will check this bit of + MAC address. + 0 stands for this bit will be fuzzy matched, TCAM won't care about this bit + of MAC address. + +[1] Documentation/devicetree/bindings/net/phy.txt + +Example: + +dsaf0: dsa@c7000000 { + compatible = "hisilicon,hns-dsaf-v1"; + mode = "6port-16rss"; + interrupt-parent = <&mbigen_dsa>; + reg = <0x0 0xc5000000 0x0 0x890000 + 0x0 0xc7000000 0x0 0x60000>; + reg-names = "ppe-base", "dsaf-base"; + subctrl-syscon = <&subctrl>; + reset-field-offset = 0; + interrupts = <131 4>,<132 4>, <133 4>,<134 4>, + <135 4>,<136 4>, <137 4>,<138 4>, + <139 4>,<140 4>, <141 4>,<142 4>, + <143 4>,<144 4>, <145 4>,<146 4>, + <147 4>,<148 4>, <384 1>,<385 1>, + <386 1>,<387 1>, <388 1>,<389 1>, + <390 1>,<391 1>, + buf-size = <4096>; + desc-num = <1024>; + dma-coherent; + + port@0 { + reg = 0; + phy-handle = <&phy0>; + serdes-syscon = <&serdes>; + mc-mac-mask = [ff f0 00 00 00 00]; + }; + + port@1 { + reg = 1; + serdes-syscon = <&serdes>; + mc-mac-mask = [ff f0 00 00 00 00]; + }; +}; |