← DriversDRIVERS 5.2
Platform Drivers and Device Tree
Not yet catalogued — how non-discoverable hardware gets described to the kernel, and how a driver gets matched to it. 9 bytes.
What this topic will cover
- Why platform devices exist — hardware that can't enumerate itself, unlike USB or PCI.
- Device tree purpose and syntax — nodes, properties, reg, interrupts, and the compatible string that drives matching.
- platform_driver registration via of_match_table, and the probe/remove lifecycle — when probe actually gets called.
- Getting resources in probe — platform_get_irq, devm_platform_ioremap_resource.
- The bus/device/driver model as a general pattern, the DTB's role at boot (recap of 3.5.B3), and device tree overlays at a concept level.
Not yet catalogued — check back once this topic is underway.
Notes from readers
Comments — via GitHub