Differences

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--- products:sbc:common:applications:gpio:uart [2023/11/07 05:08]
nick [Table]
+++ products:sbc:common:applications:gpio:uart [2023/11/07 05:09]
nick [Enable UART]
@@ Line 35: / Line 35: @@
 $ ls /dev/ttyS3
 /dev/ttyS3
+```
+<tabbox VIM3 with 5.15 kernel>
+Edit ''/boot/dtb/amlogic/kvim3.dtb.overlay.env'' to add uart node to ''fdt_overlays'' node if it doesn't exist.
+e.g. Enable ''UART_E'', you need to add ''uart_e'' to node ''fdt_overlays'' if it doesn't exist.
+```shell
+fdt_overlays=uart_e
+```
+After reboot, you will see the UART device node.
+```shell
+$ ls /dev/ttyS4
+/dev/ttyS4
+```
+<tabbox VIM3L with 5.15 kernel>
+Edit ''/boot/dtb/amlogic/kvim3l.dtb.overlay.env'' to add uart node to ''fdt_overlays'' node if it doesn't exist.
+e.g. Enable ''UART_E'', you need to add ''uart_e'' to node ''fdt_overlays'' if it doesn't exist.
+```shell
+fdt_overlays=uart_e
+```
+After reboot, you will see the UART device node.
+```shell
+$ ls /dev/ttyS4
+/dev/ttyS4
 ```

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