From: Mark Brown <broonie@kernel.org> To: Nishanth Menon <nm@ti.com> Cc: jerome Neanne <jneanne@baylibre.com>, Wadim Egorov <W.Egorov@phytec.de>, "lgirdwood@gmail.com" <lgirdwood@gmail.com>, "robh+dt@kernel.org" <robh+dt@kernel.org>, "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: Fri, 16 Dec 2022 13:41:52 +0000 [thread overview] Message-ID: <Y5x1oAzezZGqyZSx@sirena.org.uk> (raw) In-Reply-To: <20221215214149.whcjdphxxvvedrih@affront> [-- Attachment #1: Type: text/plain, Size: 1150 bytes --] On Thu, Dec 15, 2022 at 03:41:49PM -0600, Nishanth Menon wrote: > Yeah - this happens to be SDcard supply (at least in my case).. I'd > rather not change the mmc host or core layer to handle a case where > LDO happened to be in bypass. it is a regulator driver's problem, IMHO > how to provide the stated voltage OR fail to transition the voltage. Well, if the regulator is in bypass mode then it is by definition not regulating and so it's like programming the voltage while switched off, setting the target for when it starts regulating again. It's a weirder use case but it does feel like the consistent thing to do at least. The driver shouldn't enter/leave bypass without being explicitly told to so since there'll be a performance impact. > b) If I wanted the LDO to poweroff the bypass bit at start (define the > startup hardware condition), I dont seem to have a description for > that either. That's something we could add in constraints, though the actual process of implementing it might get messy if there's restrictions like having to power off (though from further down the thread I see that might not apply to this device). [-- Attachment #2: signature.asc --] [-- Type: application/pgp-signature, Size: 488 bytes --]
WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@kernel.org> To: Nishanth Menon <nm@ti.com> Cc: jerome Neanne <jneanne@baylibre.com>, Wadim Egorov <W.Egorov@phytec.de>, "lgirdwood@gmail.com" <lgirdwood@gmail.com>, "robh+dt@kernel.org" <robh+dt@kernel.org>, "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: Fri, 16 Dec 2022 13:41:52 +0000 [thread overview] Message-ID: <Y5x1oAzezZGqyZSx@sirena.org.uk> (raw) In-Reply-To: <20221215214149.whcjdphxxvvedrih@affront> [-- Attachment #1.1: Type: text/plain, Size: 1150 bytes --] On Thu, Dec 15, 2022 at 03:41:49PM -0600, Nishanth Menon wrote: > Yeah - this happens to be SDcard supply (at least in my case).. I'd > rather not change the mmc host or core layer to handle a case where > LDO happened to be in bypass. it is a regulator driver's problem, IMHO > how to provide the stated voltage OR fail to transition the voltage. Well, if the regulator is in bypass mode then it is by definition not regulating and so it's like programming the voltage while switched off, setting the target for when it starts regulating again. It's a weirder use case but it does feel like the consistent thing to do at least. The driver shouldn't enter/leave bypass without being explicitly told to so since there'll be a performance impact. > b) If I wanted the LDO to poweroff the bypass bit at start (define the > startup hardware condition), I dont seem to have a description for > that either. That's something we could add in constraints, though the actual process of implementing it might get messy if there's restrictions like having to power off (though from further down the thread I see that might not apply to this device). [-- 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:[~2022-12-16 13:42 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 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 [this message] 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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