#linux-amlogic on 2021-07-18 — irc logs at libera.irclog.whitequark.org

2021-06-01 12:24 narmstrong changed the topic of #linux-amlogic to: Amlogic mainline kernel development discussion - our wiki http://linux-meson.com/ - ml linux-amlogic@lists.infradead.org - official channel moved from Freenode - publicly logged on https://libera.irclog.whitequark.org/linux-amlogic

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17:36 <armoon> xdarklight: just want to understand the confusion on PWREN, either is INPUT / OTPUT to usb hub am I correct

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18:01 <armoon> sorry I am not the expert in schematics interpretation, but what I understand is PWREN (GPIOAO.BIT5) is input signal to MP62551DGT-LF-Z which controls the VBUS signal power to USB HUB to pin V5 on GL852G IC

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18:03 <armoon> plz check the GL852G power section. it has 5V Power input. It need be NC if using external regulator

18:06 <armoon> 5V and V33 are the regulator for GL852G IC HUB,

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18:16 <armoon> I feel setting GPIOAO.BIT5 setting to Active Low just enable the 5V via external regulator MP62551DGT-LF-Z

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18:22 <armoon> I don't know much on internal IC signal apart from this, may be I need to check with the board designer Odroid / Hardkernel for more details

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