marvell-neta-bm.txt (1509B)
1* Marvell Armada 380/XP Buffer Manager driver (BM) 2 3Required properties: 4 5- compatible: should be "marvell,armada-380-neta-bm". 6- reg: address and length of the register set for the device. 7- clocks: a pointer to the reference clock for this device. 8- internal-mem: a phandle to BM internal SRAM definition. 9 10Optional properties (port): 11 12- pool<0 : 3>,capacity: size of external buffer pointers' ring maintained 13 in DRAM. Can be set for each pool (id 0 : 3) separately. The value has 14 to be chosen between 128 and 16352 and it also has to be aligned to 32. 15 Otherwise the driver would adjust a given number or choose default if 16 not set. 17- pool<0 : 3>,pkt-size: maximum size of a packet accepted by a given buffer 18 pointers' pool (id 0 : 3). It will be taken into consideration only when pool 19 type is 'short'. For 'long' ones it would be overridden by port's MTU. 20 If not set a driver will choose a default value. 21 22In order to see how to hook the BM to a given ethernet port, please 23refer to Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt. 24 25Example: 26 27- main node: 28 29bm: bm@c8000 { 30 compatible = "marvell,armada-380-neta-bm"; 31 reg = <0xc8000 0xac>; 32 clocks = <&gateclk 13>; 33 internal-mem = <&bm_bppi>; 34 pool2,capacity = <4096>; 35 pool1,pkt-size = <512>; 36}; 37 38- internal SRAM node: 39 40bm_bppi: bm-bppi { 41 compatible = "mmio-sram"; 42 reg = <MBUS_ID(0x0c, 0x04) 0 0x100000>; 43 ranges = <0 MBUS_ID(0x0c, 0x04) 0 0x100000>; 44 #address-cells = <1>; 45 #size-cells = <1>; 46 clocks = <&gateclk 13>; 47};