hwlock.txt (1911B)
1Generic hwlock bindings 2======================= 3 4Generic bindings that are common to all the hwlock platform specific driver 5implementations. 6 7Please also look through the individual platform specific hwlock binding 8documentations for identifying any additional properties specific to that 9platform. 10 11hwlock providers: 12================= 13 14Required properties: 15- #hwlock-cells: Specifies the number of cells needed to represent a 16 specific lock. 17 18hwlock users: 19============= 20 21Consumers that require specific hwlock(s) should specify them using the 22property "hwlocks", and an optional "hwlock-names" property. 23 24Required properties: 25- hwlocks: List of phandle to a hwlock provider node and an 26 associated hwlock args specifier as indicated by 27 #hwlock-cells. The list can have just a single hwlock 28 or multiple hwlocks, with each hwlock represented by 29 a phandle and a corresponding args specifier. 30 31Optional properties: 32- hwlock-names: List of hwlock name strings defined in the same order 33 as the hwlocks, with one name per hwlock. Consumers can 34 use the hwlock-names to match and get a specific hwlock. 35 36 371. Example of a node using a single specific hwlock: 38 39The following example has a node requesting a hwlock in the bank defined by 40the node hwlock1. hwlock1 is a hwlock provider with an argument specifier 41of length 1. 42 43 node { 44 ... 45 hwlocks = <&hwlock1 2>; 46 ... 47 }; 48 492. Example of a node using multiple specific hwlocks: 50 51The following example has a node requesting two hwlocks, a hwlock within 52the hwlock device node 'hwlock1' with #hwlock-cells value of 1, and another 53hwlock within the hwlock device node 'hwlock2' with #hwlock-cells value of 2. 54 55 node { 56 ... 57 hwlocks = <&hwlock1 2>, <&hwlock2 0 3>; 58 ... 59 };