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--- products:sbc:common:applications:gpio:spi [2023/11/07 05:06]
nick [Table]
+++ products:sbc:common:applications:gpio:spi [2025/02/17 21:40] (current)
nick [Enable SPI]
@@ Line 3: / Line 3: @@
 |           ^  SPI    ^ Pin  ^ Pin name     ^  GPIO name  ^  DT overlay node  ^  Device node     ^
-^  VIM3/3L  |  SPI_B  |  15  | SPIB_SS      |  GPIOH_6    |  spi1             |  /dev/spidev1.1  |
+^  VIM3/3L  |  SPI_B  |  15  | SPIB_SS      |  GPIOH_6    |  spi1             |  /dev/spidev2.1  |
 | :::       | :::     |  16  | SPIB_SCLK    |  GPIOH_7    | :::               | :::              |
 | :::       | :::     |  35  | SPIB_MISO    |  GPIOH_5    | :::               | :::              |
@@ Line 40: / Line 40: @@
 $ ls /dev/spidev1.1
 /dev/spidev1.1
+```
+<tabbox VIM3 with 5.15 kernel>
+Edit ''/boot/dtb/amlogic/kvim3.dtb.overlay.env'' to add spi node to ''fdt_overlays'' node if it doesn't exist.
+e.g. Enable ''SPI_B'', you need to add ''spi1'' to node ''fdt_overlays'' if it doesn't exist.
+```shell
+fdt_overlays=spi1
+```
+After reboot, you will see the SPI device node.
+```shell
+$ ls /dev/spidev2.1
+/dev/spidev2.1
+```
+<tabbox VIM3L with 5.15 kernel>
+Edit ''/boot/dtb/amlogic/kvim3l.dtb.overlay.env'' to add spi node to ''fdt_overlays'' node if it doesn't exist.
+e.g. Enable ''SPI_B'', you need to add ''spi1'' to node ''fdt_overlays'' if it doesn't exist.
+```shell
+fdt_overlays=spi1
+```
+After reboot, you will see the SPI device node.
+```shell
+$ ls /dev/spidev2.1
+/dev/spidev2.1
 ```
@@ Line 585: / Line 622: @@
 Connect PIN36(MOSI), PIN37(MISO) then run ''spidev_test'':
 ```shell
-$ ./spidev_test -i spi_in.txt -o ./spi_out.txt
+$ ./spidev_test -D /dev/spidev1.1 -i spi_in.txt -o ./spi_out.txt
 spi mode: 0x0
 bits per word: 8
 max speed: 500000 Hz (500 KHz)
 ```
+<WRAP important >
+Please choose the correct spi device node.
+</WRAP>
 Check output data:

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