Messages in this thread | | | Date | Wed, 3 May 2023 21:08:01 +0200 | From | Marco Felsch <> | Subject | Re: [PATCH] arm64: dts: imx8mp-evk: add dual-role usb port1 support |
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On 23-05-03, Marco Felsch wrote: > Hi Li, Andreas,
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> > Thanks for the advice. > > > > *reuse* compatible = "gpio-sbu-mux"; can make the basic *function* work, > > but that's not the right direction, SBU has its own signal in typec connector, > > here what we need is the Super Speed signal switch, you can see iMX8MP EVK > > use 2 GPIOs control the SS for 3 states(normal orientation, reserve orientation, > > places all channels in high impedance state), but SBU will disable both channels > > at TYPEC_STATE_USB, this is not correct for USB data, so logically we cannot > > reuse SBU either. But I think this gpio-sbu-mux.c driver can be extended to > > add support super speed signal orientation. > > Thanks for the useful input :) I was dug into the usb-c hole and now I'm > back. The "gpio-sbu-mux" should fit perfectly for our use-case, we only > have to tell the driver to act as 'orientation-switch' only. All pieces > are in place so just dts work to do. I will test my new patch and send a > new version which should support super-speed to (fingers crossed).
Now I see problem you mentioned, let's see if we can extent the driver. Sorry for the noise.
Regards, Marco
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