From mboxrd@z Thu Jan 1 00:00:00 1970 From: Javier Martinez Canillas Subject: Re: [PATCH v2 07/10] regulator: Add driver for Maxim 77802 PMIC regulators Date: Tue, 24 Jun 2014 18:43:13 +0200 Message-ID: <53A9AAA1.4030005@collabora.co.uk> References: <1402941758-11216-1-git-send-email-javier.martinez@collabora.co.uk> <1402941758-11216-8-git-send-email-javier.martinez@collabora.co.uk> <20140616192500.GJ5099@sirena.org.uk> <53A01D54.10506@collabora.co.uk> <20140617141254.GP5099@sirena.org.uk> <53A06749.1010606@collabora.co.uk> <20140621204026.GH22657@sirena.org.uk> <53A7F339.7050608@collabora.co.uk> <20140623094734.GV24291@sirena.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20140623094734.GV24291@sirena.org.uk> Sender: linux-kernel-owner@vger.kernel.org To: Mark Brown Cc: Lee Jones , Samuel Ortiz , Mike Turquette , Liam Girdwood , Alessandro Zummo , Kukjin Kim , Doug Anderson , Olof Johansson , Sjoerd Simons , Daniel Stone , Tomeu Vizoso , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-samsung-soc@vger.kernel.org Hello Mark, On 06/23/2014 11:47 AM, Mark Brown wrote: > On Mon, Jun 23, 2014 at 11:28:25AM +0200, Javier Martinez Canillas wrote: >> On 06/21/2014 10:40 PM, Mark Brown wrote: > >> > That's not really relevant here - I'm asking if the regulators get their >> > own supplies rather than if anything uses them. > >> Sorry if I keep misunderstanding your question but the regulators in this PMIC >> don't have a parent supply/regulator node. > > They should, I'm pretty sure the device does actually regulate one > supply into another. > Thanks a lot for the clarification. This was not evident to me when I read the PMIC datasheet and because both the max77xxx Chrome OS 3.8 and mainline max77686 drivers used a simplistic model of the power scheme. But Doug confirmed to me that some regulators on this PMIC do indeed use others regulators as a power supply so I'll change this in the next version of the patch-set. Best regards, Javier From mboxrd@z Thu Jan 1 00:00:00 1970 From: javier.martinez@collabora.co.uk (Javier Martinez Canillas) Date: Tue, 24 Jun 2014 18:43:13 +0200 Subject: [PATCH v2 07/10] regulator: Add driver for Maxim 77802 PMIC regulators In-Reply-To: <20140623094734.GV24291@sirena.org.uk> References: <1402941758-11216-1-git-send-email-javier.martinez@collabora.co.uk> <1402941758-11216-8-git-send-email-javier.martinez@collabora.co.uk> <20140616192500.GJ5099@sirena.org.uk> <53A01D54.10506@collabora.co.uk> <20140617141254.GP5099@sirena.org.uk> <53A06749.1010606@collabora.co.uk> <20140621204026.GH22657@sirena.org.uk> <53A7F339.7050608@collabora.co.uk> <20140623094734.GV24291@sirena.org.uk> Message-ID: <53A9AAA1.4030005@collabora.co.uk> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hello Mark, On 06/23/2014 11:47 AM, Mark Brown wrote: > On Mon, Jun 23, 2014 at 11:28:25AM +0200, Javier Martinez Canillas wrote: >> On 06/21/2014 10:40 PM, Mark Brown wrote: > >> > That's not really relevant here - I'm asking if the regulators get their >> > own supplies rather than if anything uses them. > >> Sorry if I keep misunderstanding your question but the regulators in this PMIC >> don't have a parent supply/regulator node. > > They should, I'm pretty sure the device does actually regulate one > supply into another. > Thanks a lot for the clarification. This was not evident to me when I read the PMIC datasheet and because both the max77xxx Chrome OS 3.8 and mainline max77686 drivers used a simplistic model of the power scheme. But Doug confirmed to me that some regulators on this PMIC do indeed use others regulators as a power supply so I'll change this in the next version of the patch-set. Best regards, Javier