> -----Original Message----- > From: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> > Sent: Saturday, August 19, 2023 3:04 AM > To: Shenwei Wang <shenwei.wang@xxxxxxx>; Rob Herring > <robh+dt@xxxxxxxxxx> > Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx>; Conor Dooley > <conor+dt@xxxxxxxxxx>; Ulf Hansson <ulf.hansson@xxxxxxxxxx>; Liam Girdwood > <lgirdwood@xxxxxxxxx>; Mark Brown <broonie@xxxxxxxxxx>; > imx@xxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; > dl-linux-imx <linux-imx@xxxxxxx> > Subject: [EXT] Re: [PATCH 1/2] dt-bindings: power: Add regulator-pd yaml file > > Caution: This is an external email. Please take care when clicking links or > opening attachments. When in doubt, report the message using the 'Report this > email' button > > > >> > >> This needs to answer why we need this. > >> > >> It looks like just an abstraction layer to make regulators look like > >> a power domain. > >> > > > > Yes, it is a wrapper that allows using regulators as a power domain. > > This removes the need to add regulator operating code in each consumer > > device driver. As a power domain, the regulator will be managed > > automatically by the device driver framework and PM subsystem. > > > > This is very useful when a device's power is controlled by a GPIO pin, > > which currently requires using the fixed-regulator to achieve the same > > purpose. However, the fixed-regulator approach may have to add code in the > driver in order to use it. > > Why do you start discussion from zero ignoring all previous history of this > patchset? > Thank you for providing the link. After reviewing the entire thread, I still don't understand how to proceed. What is the conclusion regarding this commonly used use case but overlooked feature in the upstream kernel? Thanks, Shenwei > https://lore.kern/ > el.org%2Fall%2F20220609150851.23084-1- > max.oss.09%40gmail.com%2F&data=05%7C01%7Cshenwei.wang%40nxp.com% > 7C2cf40d23202c430302c908dba08add2e%7C686ea1d3bc2b4c6fa92cd99c5c301 > 635%7C0%7C0%7C638280290493921016%7CUnknown%7CTWFpbGZsb3d8eyJ > WIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C > 3000%7C%7C%7C&sdata=0O%2FIytE6YbJL26je7hoxEu0ayZYs07PBjfZkBDVaC1M > %3D&reserved=0 > > Best regards, > Krzysztof
