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H A D | rk3399-rock-pi-4.dtsi | e12f67fe Tue Dec 01 09:41:32 CST 2020 Vicente Bergas <vicencb@gmail.com> arm64: dts: rockchip: use USB host by default on rk3399-rock-pi-4
Based on the board schematics at https://dl.radxa.com/rockpi4/docs/hw/rockpi4/rockpi_4c_v12_sch_20200620.pdf on page 19 there is an USB Type-A receptacle being used as an USB-OTG port.
But the Type-A connector is not valid for OTG operation, for this reason there is a switch to select host or device role. This is non-compliant and error prone because switching is manual. So, use host mode as it corresponds for a Type-A receptacle.
Signed-off-by: Vicente Bergas <vicencb@gmail.com> Link: https://lore.kernel.org/r/20201201154132.1286-4-vicencb@gmail.com Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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