Comments (1)
While 'ranges' is required to translate and define memory mapped addresses, 'dma-ranges' is optional (or forgotten). Missing is 1:1 translation.
The translation is a bit different too. For 'ranges', a DT could have 1:1 translation or make the child nodes a relative offset and the result is the same. For dma-ranges, the cpu address, bus address and addressable size are all important to the software.
from devicetree-specification.
Related Issues (20)
- cpu node requirements don't match schema HOT 9
- Rewrite the specs in Kaitai Struct and generate the text docs from KS specs HOT 2
- Build latexpdf error HOT 1
- MIME type for DeviceTree dts files HOT 5
- Invalid MAC address in example HOT 1
- Memory terminology WIMG and VLE used w/o reference or definition HOT 3
- This repo has both master and main branches HOT 3
- Interrupt tree example (current Fig 2.3) does not show in PDF HOT 8
- Generic node name for vibration motor / haptics HOT 1
- Provide more information about RAM from the bootloader HOT 6
- Enforce ARRAY_SIZE(property) == ARRAY_SIZE(property-names) HOT 2
- enhancement: addition of /delete-label/ HOT 3
- Codify array values syntax HOT 2
- Table 1: Revision History was not updated for Release v0.4 HOT 1
- WARNING: Invalid device tree, expect boot to fail | openbsd-current Firefly RK3399 ARM SoC HOT 3
- Architecture bindings? HOT 2
- Property inheritance HOT 6
- chapter2-devicetree-basics.rst refers to missing Appendix A HOT 1
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from devicetree-specification.