On Tue, Nov 12, 2019 at 1:01 PM Drew Fustini <pdp7pdp7@xxxxxxxxx> wrote: > I based the overlay I was using one a MCP2515 overlay for SPI0 on > BeagleBone Black: > https://github.com/battlesnake/beaglebone-spi0-mcp2515/blob/master/MCP2515.dts > > I'm not sure where those extra "mcp251x," properties come from since > the driver does not appear to use them at all. I searched for "mcp251x,oscillator-frequency" on google and found this old patch by Alessandro Zummo <a.zummo@xxxxxxxxxxxx>: https://github.com/beagleboard/meta-beagleboard/blob/master/common-bsp/recipes-kernel/linux/linux-mainline-3.8/net/0006-mcp251x-add-device-tree-support.patch It does read some of those properties: + of_property_read_u32(np, "mcp251x,oscillator-frequency", &tmp); + pd->stay_awake = of_property_read_bool(np, "mcp251x,stay-awake"); + pd->enable_clkout = of_property_read_bool(np, "mcp251x,enable-clkout"); Maybe there are people using this out of tree patch still and therefore including those properties like Mark K Cowan did in: https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/MCP2515-SPI0.dts Thanks, Drew
