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SPI2 definition is not found for STM32L476 device tree. How to add?
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Yannis Damigos
Hi,
### How to add?You don't need to add it. It exists in dts/arm/st/l4/stm32l471.dtsi A. stm32l4.dtsiTo enable it just add the following in nucleo_l476rg.dts or an overlay file: &spi2 { status = "okay"; }; Yannis |
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My environment:
Ubuntu 18.04 LTS STM32L476 Nucleo_64 (hereafter STM32L476) STM32F769 Discovery Kit (hereafter STM32F769) Zephyr 2.1.0-rc1 ### SPI2 for STM32L476 https://docs.zephyrproject.org/latest/boards/arm/nucleo_l476rg/doc/index.html In the above page, there is the definition of SPI2 (and SPI3). However, when I west build the project with the SPI_2 set, I have the following errors. ``` zephyr/include/generated/generated_dts_board_fixups.h:199:27: error: 'DT_ST_STM32_SPI_FIFO_40003800_IRQ_0_PRIORITY' undeclared (first use in this function); did you mean 'DT_ST_STM32_SPI_FIFO_40013000_IRQ_0_PRIORITY'?
#define DT_SPI_2_IRQ_PRI DT_ST_STM32_SPI_FIFO_40003800_IRQ_0_PRIORITY
``` I found that the above is caused because there is no "spi2" definition in the stm32l4.dtsi. On the other hand, there is "spi2" definition in stm32f7.dtsi, which is shown below. ``` spi2: spi@40003800 {
compatible = "st,stm32-spi";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x40003800 0x400>;
clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00004000>;
interrupts = <36 5>;
status = "disabled";
label = "SPI_2";
};
```
### How to add?I may need to add the spi2 definition for STM32L476. Where should I add the definition? A. stm32l4.dtsi B. nucleo_l476rg.dts C. <BOARD>.overlay file located in the project directory I just wonder why there is a definition for SPI2 for the supported board web page, but it is not actually supported by the device tree. |
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