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From: Mark Brown <broonie@kernel.org>
To: jerome Neanne <jneanne@baylibre.com>
Cc: Wadim Egorov <W.Egorov@phytec.de>,
	"lgirdwood@gmail.com" <lgirdwood@gmail.com>,
	"robh+dt@kernel.org" <robh+dt@kernel.org>,
	"nm@ti.com" <nm@ti.com>, "kristo@kernel.org" <kristo@kernel.org>,
	"dmitry.torokhov@gmail.com" <dmitry.torokhov@gmail.com>,
	"krzysztof.kozlowski+dt@linaro.org" 
	<krzysztof.kozlowski+dt@linaro.org>,
	"catalin.marinas@arm.com" <catalin.marinas@arm.com>,
	"will@kernel.org" <will@kernel.org>,
	"lee@kernel.org" <lee@kernel.org>,
	"tony@atomide.com" <tony@atomide.com>,
	"vigneshr@ti.com" <vigneshr@ti.com>,
	"shawnguo@kernel.org" <shawnguo@kernel.org>,
	"geert+renesas@glider.be" <geert+renesas@glider.be>,
	"dmitry.baryshkov@linaro.org" <dmitry.baryshkov@linaro.org>,
	"marcel.ziswiler@toradex.com" <marcel.ziswiler@toradex.com>,
	"vkoul@kernel.org" <vkoul@kernel.org>,
	"biju.das.jz@bp.renesas.com" <biju.das.jz@bp.renesas.com>,
	"arnd@arndb.de" <arnd@arndb.de>,
	"jeff@labundy.com" <jeff@labundy.com>, "afd@ti.com" <afd@ti.com>,
	"khilman@baylibre.com" <khilman@baylibre.com>,
	"narmstrong@baylibre.com" <narmstrong@baylibre.com>,
	"msp@baylibre.com" <msp@baylibre.com>,
	"j-keerthy@ti.com" <j-keerthy@ti.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
	"linux-input@vger.kernel.org" <linux-input@vger.kernel.org>,
	"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>
Subject: Re: [PATCH v7 1/6] DONOTMERGE: arm64: dts: ti: Add TI TPS65219 PMIC support for AM642 SK board.
Date: Thu, 15 Dec 2022 16:09:50 +0000	[thread overview]
Message-ID: <Y5tGzjgcAWPqdFNE@sirena.org.uk> (raw)
In-Reply-To: <e2bc53fe-3a0c-cf24-8b29-ca377aba3721@baylibre.com>

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On Thu, Dec 15, 2022 at 04:51:40PM +0100, jerome Neanne wrote:
> On 15/12/2022 16:09, Wadim Egorov wrote:

> > I am testing your PMIC patches on a AM62 based board with a similar setup and
> > running into the following error

> >      VDDSHV5_SDIO: bypassed regulator has no supply!
> >      VDDSHV5_SDIO: will resolve supply early: ldo1
> >      VDDSHV5_SDIO: supplied by regulator-dummy
> >      VDDSHV5_SDIO: failed to get the current voltage: -EINVAL

> > Have you noticed problems with LDO1 and bypass mode?

> I did not noticed this on am642 board but IIRC this rail was not used. I
> heard about similar issue reported to me by Nishanth M with a fix proposal
> here:
> https://gist.github.com/nmenon/e4dd6ef6afe31bc9750fa6cbee8d3e25

That proposal looks really non-idiomatic and quite unusual, if there's a
fixed voltage supply to the LDO I'd expect to see it modeled as a fixed
voltage regulator.  I'm not sure what the use of bypass here is trying
to accomplish TBH.

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WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@kernel.org>
To: jerome Neanne <jneanne@baylibre.com>
Cc: Wadim Egorov <W.Egorov@phytec.de>,
	"lgirdwood@gmail.com" <lgirdwood@gmail.com>,
	"robh+dt@kernel.org" <robh+dt@kernel.org>,
	"nm@ti.com" <nm@ti.com>, "kristo@kernel.org" <kristo@kernel.org>,
	"dmitry.torokhov@gmail.com" <dmitry.torokhov@gmail.com>,
	"krzysztof.kozlowski+dt@linaro.org"
	<krzysztof.kozlowski+dt@linaro.org>,
	"catalin.marinas@arm.com" <catalin.marinas@arm.com>,
	"will@kernel.org" <will@kernel.org>,
	"lee@kernel.org" <lee@kernel.org>,
	"tony@atomide.com" <tony@atomide.com>,
	"vigneshr@ti.com" <vigneshr@ti.com>,
	"shawnguo@kernel.org" <shawnguo@kernel.org>,
	"geert+renesas@glider.be" <geert+renesas@glider.be>,
	"dmitry.baryshkov@linaro.org" <dmitry.baryshkov@linaro.org>,
	"marcel.ziswiler@toradex.com" <marcel.ziswiler@toradex.com>,
	"vkoul@kernel.org" <vkoul@kernel.org>,
	"biju.das.jz@bp.renesas.com" <biju.das.jz@bp.renesas.com>,
	"arnd@arndb.de" <arnd@arndb.de>,
	"jeff@labundy.com" <jeff@labundy.com>, "afd@ti.com" <afd@ti.com>,
	"khilman@baylibre.com" <khilman@baylibre.com>,
	"narmstrong@baylibre.com" <narmstrong@baylibre.com>,
	"msp@baylibre.com" <msp@baylibre.com>,
	"j-keerthy@ti.com" <j-keerthy@ti.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"linux-input@vger.kernel.org" <linux-input@vger.kernel.org>,
	"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>
Subject: Re: [PATCH v7 1/6] DONOTMERGE: arm64: dts: ti: Add TI TPS65219 PMIC support for AM642 SK board.
Date: Thu, 15 Dec 2022 16:09:50 +0000	[thread overview]
Message-ID: <Y5tGzjgcAWPqdFNE@sirena.org.uk> (raw)
In-Reply-To: <e2bc53fe-3a0c-cf24-8b29-ca377aba3721@baylibre.com>


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On Thu, Dec 15, 2022 at 04:51:40PM +0100, jerome Neanne wrote:
> On 15/12/2022 16:09, Wadim Egorov wrote:

> > I am testing your PMIC patches on a AM62 based board with a similar setup and
> > running into the following error

> >      VDDSHV5_SDIO: bypassed regulator has no supply!
> >      VDDSHV5_SDIO: will resolve supply early: ldo1
> >      VDDSHV5_SDIO: supplied by regulator-dummy
> >      VDDSHV5_SDIO: failed to get the current voltage: -EINVAL

> > Have you noticed problems with LDO1 and bypass mode?

> I did not noticed this on am642 board but IIRC this rail was not used. I
> heard about similar issue reported to me by Nishanth M with a fix proposal
> here:
> https://gist.github.com/nmenon/e4dd6ef6afe31bc9750fa6cbee8d3e25

That proposal looks really non-idiomatic and quite unusual, if there's a
fixed voltage supply to the LDO I'd expect to see it modeled as a fixed
voltage regulator.  I'm not sure what the use of bypass here is trying
to accomplish TBH.

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  reply	other threads:[~2022-12-15 16:10 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-04 15:23 [PATCH v7 0/6] Add support for TI TPS65219 PMIC Jerome Neanne
2022-11-04 15:23 ` Jerome Neanne
2022-11-04 15:23 ` [PATCH v7 1/6] DONOTMERGE: arm64: dts: ti: Add TI TPS65219 PMIC support for AM642 SK board Jerome Neanne
2022-11-04 15:23   ` Jerome Neanne
2022-12-15 15:09   ` Wadim Egorov
2022-12-15 15:09     ` Wadim Egorov
2022-12-15 15:51     ` jerome Neanne
2022-12-15 15:51       ` jerome Neanne
2022-12-15 16:09       ` Mark Brown [this message]
2022-12-15 16:09         ` Mark Brown
2022-12-15 17:54         ` Nishanth Menon
2022-12-15 17:54           ` Nishanth Menon
2022-12-15 18:22           ` Mark Brown
2022-12-15 18:22             ` Mark Brown
2022-12-15 21:41             ` Nishanth Menon
2022-12-15 21:41               ` Nishanth Menon
2022-12-16  6:21               ` Vignesh Raghavendra
2022-12-16  6:21                 ` Vignesh Raghavendra
2022-12-16  7:28                 ` jerome Neanne
2022-12-16  7:28                   ` jerome Neanne
2022-12-16 13:41               ` Mark Brown
2022-12-16 13:41                 ` Mark Brown
2022-12-28 10:16                 ` Wadim Egorov
2022-12-28 10:16                   ` Wadim Egorov
2022-11-04 15:23 ` [PATCH v7 2/6] DONOTMERGE: arm64: dts: ti: Add pinmux and irq mapping for TPS65219 external interrupts Jerome Neanne
2022-11-04 15:23   ` Jerome Neanne
2022-11-04 15:23 ` [PATCH v7 3/6] DONOTMERGE: arm64: dts: ti: k3-am642-sk: Enable tps65219 power-button Jerome Neanne
2022-11-04 15:23   ` Jerome Neanne
2022-11-04 15:23 ` [PATCH v7 4/6] mfd: tps65219: Add driver for TI TPS65219 PMIC Jerome Neanne
2022-11-04 15:23   ` Jerome Neanne
2022-11-15 22:26   ` Kevin Hilman
2022-11-15 22:26     ` Kevin Hilman
2022-11-15 23:14   ` Kevin Hilman
2022-11-15 23:14     ` Kevin Hilman
2022-11-16 13:58     ` Lee Jones
2022-11-16 13:58       ` Lee Jones
2022-11-16 18:11   ` Lee Jones
2022-11-16 18:11     ` Lee Jones
2022-11-04 15:23 ` [PATCH v7 5/6] Input: Add tps65219 interrupt driven powerbutton Jerome Neanne
2022-11-04 15:23   ` Jerome Neanne
2022-11-17 11:53   ` Lee Jones
2022-11-17 11:53     ` Lee Jones
2022-11-04 15:23 ` [PATCH v7 6/6] arm64: defconfig: Add tps65219 as modules Jerome Neanne
2022-11-04 15:23   ` Jerome Neanne
2022-11-15 22:23   ` Kevin Hilman
2022-11-15 22:23     ` Kevin Hilman
2022-11-17 16:00     ` Kevin Hilman
2022-11-17 16:00       ` Kevin Hilman
2022-12-05 18:08 ` [PATCH v7 0/6] Add support for TI TPS65219 PMIC Francesco Dolcini
2022-12-05 18:08   ` Francesco Dolcini
2022-12-06 19:22   ` jerome Neanne
2022-12-06 19:22     ` jerome Neanne
2023-05-22 11:57     ` jerome Neanne
2023-05-22 11:57       ` jerome Neanne

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