On 02/04/2019 14:15, Jeff Kubascik wrote:
How capable is the device tree support in RTEMS? I did notice some device tree code in the IMX BSP layer, but it appeared to reference fixed nodes. Does RTEMS perform driver probing based on the device tree?
The device tree support in RTEMS is quite rudimentary. However, in the BSP you don't need much. You just have to deal with the interrupt controller, the clock driver and an UART driver. Maybe also I2C and SPI, but these are simple things. The more complex drivers are in libbsd (USB, MMC/SDCard, Ethernet). Here we have the device tree support from FreeBSD. It is not as good as the device tree support from Linux especially if it comes down to pins and clocks since this is a real mess usually.
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