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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/marvell-neta-bm.txt | |
parent | Initial commit. (diff) | |
download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/net/marvell-neta-bm.txt')
-rw-r--r-- | Documentation/devicetree/bindings/net/marvell-neta-bm.txt | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/marvell-neta-bm.txt b/Documentation/devicetree/bindings/net/marvell-neta-bm.txt new file mode 100644 index 000000000..07b31050d --- /dev/null +++ b/Documentation/devicetree/bindings/net/marvell-neta-bm.txt @@ -0,0 +1,47 @@ +* Marvell Armada 380/XP Buffer Manager driver (BM) + +Required properties: + +- compatible: should be "marvell,armada-380-neta-bm". +- reg: address and length of the register set for the device. +- clocks: a pointer to the reference clock for this device. +- internal-mem: a phandle to BM internal SRAM definition. + +Optional properties (port): + +- pool<0 : 3>,capacity: size of external buffer pointers' ring maintained + in DRAM. Can be set for each pool (id 0 : 3) separately. The value has + to be chosen between 128 and 16352 and it also has to be aligned to 32. + Otherwise the driver would adjust a given number or choose default if + not set. +- pool<0 : 3>,pkt-size: maximum size of a packet accepted by a given buffer + pointers' pool (id 0 : 3). It will be taken into consideration only when pool + type is 'short'. For 'long' ones it would be overridden by port's MTU. + If not set a driver will choose a default value. + +In order to see how to hook the BM to a given ethernet port, please +refer to Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt. + +Example: + +- main node: + +bm: bm@c8000 { + compatible = "marvell,armada-380-neta-bm"; + reg = <0xc8000 0xac>; + clocks = <&gateclk 13>; + internal-mem = <&bm_bppi>; + pool2,capacity = <4096>; + pool1,pkt-size = <512>; +}; + +- internal SRAM node: + +bm_bppi: bm-bppi { + compatible = "mmio-sram"; + reg = <MBUS_ID(0x0c, 0x04) 0 0x100000>; + ranges = <0 MBUS_ID(0x0c, 0x04) 0 0x100000>; + #address-cells = <1>; + #size-cells = <1>; + clocks = <&gateclk 13>; +}; |