From: Mark Brown <broonie@kernel.org> To: Robin Murphy <robin.murphy@arm.com> Cc: Sascha Hauer <s.hauer@pengutronix.de>, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Heiko Stuebner <heiko@sntech.de>, Michael Riesch <michael.riesch@wolfvision.net>, kernel@pengutronix.de Subject: Re: [PATCH 3/4] soc: rockchip: power-domain: Add regulator support Date: Wed, 22 Dec 2021 13:25:09 +0000 [thread overview] Message-ID: <YcMnNXu9Iun71uCG@sirena.org.uk> (raw) In-Reply-To: <04982df2-29a0-86d5-d4a8-05826916d9a0@arm.com> [-- Attachment #1.1: Type: text/plain, Size: 804 bytes --] On Wed, Dec 22, 2021 at 01:19:23PM +0000, Robin Murphy wrote: > On 2021-12-22 13:00, Mark Brown wrote: > > Does the SoC actually support the supply being completely off in > > operation? A lot of devices want everything powered even if idle during > > full operation since keeping voltage differentials smaller makes it a > > lot easier to design to avoid leakage current type issues at the points > > where the different power domains connect. > I don't know TBH - the available documentation doesn't seem to go into quite > that much detail. In that case I would tend to assume that unless otherwise stated it's safer to keep the supply enabled when everything else is enabled. It's the default thing and so is more likely to be what was designed for and less likely to result in nasty surprises. [-- Attachment #1.2: signature.asc --] [-- Type: application/pgp-signature, Size: 488 bytes --] [-- Attachment #2: Type: text/plain, Size: 170 bytes --] _______________________________________________ Linux-rockchip mailing list Linux-rockchip@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-rockchip
WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@kernel.org> To: Robin Murphy <robin.murphy@arm.com> Cc: Sascha Hauer <s.hauer@pengutronix.de>, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Heiko Stuebner <heiko@sntech.de>, Michael Riesch <michael.riesch@wolfvision.net>, kernel@pengutronix.de Subject: Re: [PATCH 3/4] soc: rockchip: power-domain: Add regulator support Date: Wed, 22 Dec 2021 13:25:09 +0000 [thread overview] Message-ID: <YcMnNXu9Iun71uCG@sirena.org.uk> (raw) In-Reply-To: <04982df2-29a0-86d5-d4a8-05826916d9a0@arm.com> [-- Attachment #1.1: Type: text/plain, Size: 804 bytes --] On Wed, Dec 22, 2021 at 01:19:23PM +0000, Robin Murphy wrote: > On 2021-12-22 13:00, Mark Brown wrote: > > Does the SoC actually support the supply being completely off in > > operation? A lot of devices want everything powered even if idle during > > full operation since keeping voltage differentials smaller makes it a > > lot easier to design to avoid leakage current type issues at the points > > where the different power domains connect. > I don't know TBH - the available documentation doesn't seem to go into quite > that much detail. In that case I would tend to assume that unless otherwise stated it's safer to keep the supply enabled when everything else is enabled. It's the default thing and so is more likely to be what was designed for and less likely to result in nasty surprises. [-- Attachment #1.2: signature.asc --] [-- Type: application/pgp-signature, Size: 488 bytes --] [-- Attachment #2: Type: text/plain, Size: 176 bytes --] _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-12-22 13:28 UTC|newest] Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-12-17 13:09 [PATCH 0/4] soc: rockchip: power-domain: Add regulator support Sascha Hauer 2021-12-17 13:09 ` Sascha Hauer 2021-12-17 13:09 ` [PATCH 1/4] soc: rockchip: power-domain: register device for each domain Sascha Hauer 2021-12-17 13:09 ` Sascha Hauer 2021-12-17 13:09 ` [PATCH 2/4] soc: rockchip: power-domain: Use devm_clk_bulk_get_all() Sascha Hauer 2021-12-17 13:09 ` Sascha Hauer 2021-12-17 13:09 ` [PATCH 3/4] soc: rockchip: power-domain: Add regulator support Sascha Hauer 2021-12-17 13:09 ` Sascha Hauer 2021-12-20 9:44 ` Sascha Hauer 2021-12-20 9:44 ` Sascha Hauer 2021-12-20 10:46 ` Robin Murphy 2021-12-20 10:46 ` Robin Murphy 2021-12-20 12:56 ` Mark Brown 2021-12-20 12:56 ` Mark Brown 2021-12-20 12:53 ` Mark Brown 2021-12-20 12:53 ` Mark Brown 2021-12-22 10:40 ` Sascha Hauer 2021-12-22 10:40 ` Sascha Hauer 2021-12-22 12:54 ` Robin Murphy 2021-12-22 12:54 ` Robin Murphy 2021-12-22 13:00 ` Mark Brown 2021-12-22 13:00 ` Mark Brown 2021-12-22 13:19 ` Robin Murphy 2021-12-22 13:19 ` Robin Murphy 2021-12-22 13:25 ` Mark Brown [this message] 2021-12-22 13:25 ` Mark Brown 2021-12-22 13:29 ` Michael Riesch 2021-12-22 13:29 ` Michael Riesch 2021-12-22 13:37 ` Michael Riesch 2021-12-22 13:40 ` Mark Brown 2021-12-22 13:40 ` Mark Brown 2022-02-23 8:51 ` Michael Riesch 2022-02-23 8:51 ` Michael Riesch 2021-12-17 13:09 ` [PATCH 4/4] dt-bindings: power: rockchip: Add power-supply to domain nodes Sascha Hauer 2021-12-17 13:09 ` Sascha Hauer
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