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>
- Add RT_USING_SPI_BITOPS as a separate configurable option
- Make RT_USING_SOFT_SPI depend on RT_USING_SPI_BITOPS
- Adjust build order in SConscript for proper com
Signed-off-by: Runcheng Lu <runcheng.lu@hpmicro.com>
1. 8250 serila family (OFW, PCI, DWC, early)
2. Virtual serial (by graphic and input)
3. HVC early serial
4. ARM PL011 serial
Signed-off-by: GuEe-GUI <2991707448@qq.com>
1. Generic GPIO based backlight driver
2. Generic PWM based backlight driver
3. Simple framebuffer support
4. Standard 224-color RT-Thread logo
5. Standard 224-color RT-Thread white logo
Signed-off-by: GuEe-GUI <2991707448@qq.com>
The old CLK is can't link all hardware clock cell in system that the
API of layout such as 'set_parent' can't work as expected.
Some hareware clock cell need some flags to prevent some dangerous behaviors, eg:
When a clock cell is link to the PMU, the SoC will power-down if the cell is
disable.
The new CLK can do it, and make the CLK drivers implemented easier from
TRM/DataSheet.
Signed-off-by: GuEe-GUI <2991707448@qq.com>
Hardware spinlock modules provide hardware assistance for
synchronization and mutual exclusion between heterogeneous processors
and those not operating under a single, shared operating system.
Signed-off-by: GuEe-GUI <2991707448@qq.com>
* [DM/PIC] Fixup SMP CPU mask list when CPU < 4
* [DM][PIC] Fix#10998
The size of cpumask is `RT_CPUS_NR`, memset force to space will
overflow in stack.
Signed-off-by: GuEe-GUI <2991707448@qq.com>
* [DM][LED] Fixup LED check status string match
* [DM][LED] Update LED blink cycle to heartbeat
* [DM][LED] Fixup gpio-led memory alloc to zero
* [DM][LED] Update LED common drivers
* [DM][MISC] Make Kconfig(ADC/PWM) import for DM
* [Driver][MISC][ADC] Fixup ADC
1. Fixup error no.
2. Fixup type of control for args.
3. Fixup value no init.
* [Driver][MISC][PWM] Enable `rt_pwm_get` API
Signed-off-by: GuEe-GUI <2991707448@qq.com>
