October 2017
Intermediate to advanced
586 pages
14h 8m
English
Content preview from Linux Device Drivers Development
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
Start your free trial
Extract application-specific data
Application-specific data is data beyond the common properties (neither resources nor GPIOs, regulator, and so on). Those are arbitrary properties and child nodes that can be assigned to a device. Such property names are usually prefixed with manufacture codes. These can be any string, Boolean, or integer values, along with their API defined in drivers/of/base.c in the Linux sources. The following examples we discuss are not exhaustive. Let's now reuse the node defined earlier in this chapter:
node_label: nodename@reg{ string-property = ""a string""; string-list = ""red fish"", ""blue fish""; one-int-property = <197>; /* One cell in this property */ int-list-property = <0xbeef 123 0xabcd4>;/* each number ...