VAR-SOM-AM43 USB OTG host: Difference between revisions
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(Created page with "{{PageHeader|VAR-SOM-AM43 - USB OTG as host}} {{DocImage|category1=VAR-SOM-AM43|category2=Yocto}} __toc__ From a SW perspective, the developer should do the following: *Downlo...") |
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From a SW perspective, the developer should do the following: | From a SW perspective, the developer should do the following: | ||
*Download a VAR-SOM-AM43 kernel out-of-tree. | *Download a VAR-SOM-AM43 kernel out-of-tree. | ||
*Update var-som-am43. | *Update var-som-am43.dtsi, as follows: | ||
<pre> | <pre> | ||
$ gedit arch/arm/boot/dts/var-som-am43. | $ gedit arch/arm/boot/dts/var-som-am43.dtsi | ||
... | ... | ||
&usb1 { | |||
dr_mode = "host"; | |||
//dr_mode = "otg"; | |||
status = "okay"; | |||
pinctrl-names = "default", "sleep"; | |||
pinctrl-0 = <&usb1_pins_default>; | |||
pinctrl-1 = <&usb1_pins_sleep>; | |||
}; | |||
... | ... | ||
</pre> | </pre> | ||
Revision as of 09:31, 27 December 2015
VAR-SOM-AM43 - USB OTG as host
From a SW perspective, the developer should do the following:
- Download a VAR-SOM-AM43 kernel out-of-tree.
- Update var-som-am43.dtsi, as follows:
$ gedit arch/arm/boot/dts/var-som-am43.dtsi
...
&usb1 {
dr_mode = "host";
//dr_mode = "otg";
status = "okay";
pinctrl-names = "default", "sleep";
pinctrl-0 = <&usb1_pins_default>;
pinctrl-1 = <&usb1_pins_sleep>;
};
...
- Build var-som-am43.dtb and replace it on flash / NFS.
Once the var-som-am43.dtb has been replaced on the rootfs - The USB-OTG port will function in Host-only mode.
At this point, the user can simply connect a USB Mouse or DOK to the OTG port.