Re: [PATCH v3 3/4] arm64: dts: apple: t8103: Add i2c nodes
From: Linus Walleij <hidden>
Date: 2021-11-23 23:27:17
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linux-devicetree, lkml
On Tue, Nov 23, 2021 at 3:43 PM Hector Martin [off-list ref] wrote:
For those following along in the list: the reason why i2c3 was getting stuck is because it seems the unused bus is weakly pulled low on these machines, which jams it.
That looks like some power saving attempt. I suppose that means that even i2c buses that are in use could be weakly pulled low when suspending the system and maybe even inbetween transactions to save some leak current. Yours, Linus Walleij _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel