rt-thread.git/components/drivers/core/platform_ofw.c, branch v5.3.0

[dm][core] Add rt_bus_probe_device API

2026-08-03T01:36:21Z

Add rt_bus_probe_device() to retry driver matching for a registered but unbound device. Use it when an OFW-created platform device is requested again, while preserving native-bus ownership for I2C, SPI, and other non-platform devices. Also instantiate eligible child platform devices after a parent node is registered. Signed-off-by: GuEe-GUI <2991707448@qq.com>

[drivers] Fix OFW bus conflict and prevent duplicate device creation

2026-01-20T14:05:28Z

Problem: When enumerating device tree nodes, platform bus and native buses (I2C/SPI) may create duplicate devices for the same OFW node, causing cross-bus conflicts. This triggers assertion failure '(dev->bus != new_bus)' in rt_bus_reload_driver_device() during boot on minimal DM-enabled systems. Root Cause: 1. Platform bus tries to reload devices that already belong to other buses by calling rt_bus_reload_driver_device(dev->bus, dev), which violates the API contract (requires dev->bus != new_bus). 2. Native buses (I2C/SPI) do not mark OFW nodes as occupied, so platform bus creates duplicate platform devices for I2C/SPI client nodes. Solution: 1. components/drivers/core/platform_ofw.c: Return RT_EOK when np->dev exists, letting the native bus handle device lifecycle instead of cross-bus reload. 2. components/drivers/i2c/dev_i2c_bus.c: Mark i2c_client_np->dev during scan to prevent platform bus from duplicating I2C client devices. 3. components/drivers/spi/dev_spi_bus.c: Mark spi_dev_np->dev during scan to prevent platform bus from duplicating SPI devices. Tested on Spacemit K1 RISC-V platform with minimal DM configuration. Signed-off-by: lhxj <2743257167@qq.com>

[dm][core] Update the OFW CLk init flow

2025-12-13T08:35:32Z

The clock should init before common platform devices. Signed-off-by: GuEe-GUI <2991707448@qq.com>

[DM/Platform] Fixup the node will probe more than once

2025-03-19T01:46:48Z

If a node request a new node or it's parent node. the request's node will probe a double time. So we check the device object of node in ofw probe entry and ofw probe child exit.

[DM/FEATURE] Support clock subprobe in OFW

2024-11-18T07:03:23Z

Signed-off-by: GuEe-GUI <2991707448@qq.com>

[DM/FEATURE] Support driver depends fix auto

2024-11-18T07:03:23Z

We need a API to fix the driver load auto when a second driver get it in probe process that we can not be careful of the driver-to-driver's depends in different SoC. Signed-off-by: GuEe-GUI <2991707448@qq.com>

Fixup platform not free device in OFW

2024-09-03T23:49:47Z

Signed-off-by: GuEe-GUI <2991707448@qq.com>

fix rt_atomic_dec_and_test

2024-08-09T04:54:10Z

[Feature] Support simple power domain API (#9005)

2024-05-30T07:30:40Z

* [Feature] Power domain for device 1.Support device power on/off. 2.Support attach/detach device. 3.Support power domain driver api. Signed-off-by: GuEe-GUI <2991707448@qq.com> * [DM/platform] Enhanced platform bus 1.Add power domain for device. 2.Support `remove` and `shutdown` bus interface. Signed-off-by: GuEe-GUI <2991707448@qq.com> --------- Signed-off-by: GuEe-GUI <2991707448@qq.com>

[drivers][core] 完善设备模型 (#8384)

2024-01-09T15:10:42Z