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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, Shawn > Subject: Re: [PATCH 1/5] ARM: dts: imx6qdl-sabresd: Remove incorrect > power supply assignment > > On Thu, Jan 09, 2020 at 08:25:03AM +0000, Anson Huang wrote: > > Hi, Shawn > > > > > Subject: Re: [PATCH 1/5] ARM: dts: imx6qdl-sabresd: Remove incorrect > > > power supply assignment > > > > > > On Mon, Dec 30, 2019 at 09:41:07AM +0800, Anson Huang wrote: > > > > The vdd3p0's input should be from external USB VBUS directly, NOT > > > > > > Shouldn't USB VBUS usually be 5V? It doesn't seem to match 3.0V > > > which is suggested by vdd3p0 name. > > > > > > > PMIC's sw2, so remove the power supply assignment for vdd3p0. > > > > > > > > Fixes: 93385546ba36 ("ARM: dts: imx6qdl-sabresd: Assign > > > > corresponding power supply for LDOs") > > > > > > Is it only a description correcting or is it fixing a real problem? > > > I'm trying to understand it is a 5.5-rc material or can be applied for 5.6. > > > > > > > It is fixing a real problem about USB LDO voltage, that is why we noticed > this issue. > > Okay, please describe the problem a little bit in the commit log. Also squash > the series into one patch, which is easier to be merged into -rc as a fix. OK, will send a new patch with squashing them together, but will NOT have the fix tag, is it OK? As the fix tag are different for each patch. > > My question above that USB VUBS is 5V which doesn't match 3.0V suggested > by vdd3p0 name remains unaddressed though. The vdd3p0 is a LDO, the input is the USB VBUS 5V, output can be programmed to 3.2V, I think the name is from the target output voltage. Anson _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel