From: Richard Zhu <hongxing.zhu@nxp.com>
To: Francesco Dolcini <francesco.dolcini@toradex.com>
Cc: Mark Brown <broonie@kernel.org>,
"l.stach@pengutronix.de" <l.stach@pengutronix.de>,
"bhelgaas@google.com" <bhelgaas@google.com>,
"lorenzo.pieralisi@arm.com" <lorenzo.pieralisi@arm.com>,
"jingoohan1@gmail.com" <jingoohan1@gmail.com>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
dl-linux-imx <linux-imx@nxp.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"kernel@pengutronix.de" <kernel@pengutronix.de>
Subject: RE: [PATCH v3 3/7] PCI: imx6: Fix the regulator dump when link never came up
Date: Thu, 28 Oct 2021 06:48:37 +0000 [thread overview]
Message-ID: <AS8PR04MB867600CAD244395B2AF2E8A08C869@AS8PR04MB8676.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <20211026094845.GC87230@francesco-nb.int.toradex.com>
> -----Original Message-----
> From: Francesco Dolcini <francesco.dolcini@toradex.com>
> Sent: Tuesday, October 26, 2021 5:49 PM
> To: Richard Zhu <hongxing.zhu@nxp.com>
> Cc: Francesco Dolcini <francesco.dolcini@toradex.com>; Mark Brown
> <broonie@kernel.org>; l.stach@pengutronix.de; bhelgaas@google.com;
> lorenzo.pieralisi@arm.com; jingoohan1@gmail.com;
> linux-pci@vger.kernel.org; dl-linux-imx <linux-imx@nxp.com>;
> linux-arm-kernel@lists.infradead.org; linux-kernel@vger.kernel.org;
> kernel@pengutronix.de
> Subject: Re: [PATCH v3 3/7] PCI: imx6: Fix the regulator dump when link
> never came up
>
> On Tue, Oct 26, 2021 at 09:18:39AM +0000, Richard Zhu wrote:
> > > Isn't this something that depend on the actual board design? From
> > > the driver point of view you should not silently enforce such design
> > > requirement on the board.
> > > Am I missing something here? Would be glad to you if you can clarify
> in case.
> > >
> > [Richard Zhu] Yes, it is relied on the actual HW board design.
> > This regulator is one optional, not mandatory required for all the board
> designs.
> > So, there is one _enabled or not check before manipulate this regulator.
> I think I was not clear in my question.
>
> I'm asking what's is going to happen if the vpci-e supply is used in the
> actual board design AND the same regulator is shared with another
> device (to my understanding this should be just fine from the regulator API
> point of view, correct me if I'm wrong).
[Richard Zhu] Yes, agree with you.
It should be fine from the regulator API point of view.
BR
Richard
>
> I'm not talking about board designed by NXP in which such use case might
> not exist.
>
> Francesco
WARNING: multiple messages have this Message-ID (diff)
From: Richard Zhu <hongxing.zhu@nxp.com>
To: Francesco Dolcini <francesco.dolcini@toradex.com>
Cc: Mark Brown <broonie@kernel.org>,
"l.stach@pengutronix.de" <l.stach@pengutronix.de>,
"bhelgaas@google.com" <bhelgaas@google.com>,
"lorenzo.pieralisi@arm.com" <lorenzo.pieralisi@arm.com>,
"jingoohan1@gmail.com" <jingoohan1@gmail.com>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
dl-linux-imx <linux-imx@nxp.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"kernel@pengutronix.de" <kernel@pengutronix.de>
Subject: RE: [PATCH v3 3/7] PCI: imx6: Fix the regulator dump when link never came up
Date: Thu, 28 Oct 2021 06:48:37 +0000 [thread overview]
Message-ID: <AS8PR04MB867600CAD244395B2AF2E8A08C869@AS8PR04MB8676.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <20211026094845.GC87230@francesco-nb.int.toradex.com>
> -----Original Message-----
> From: Francesco Dolcini <francesco.dolcini@toradex.com>
> Sent: Tuesday, October 26, 2021 5:49 PM
> To: Richard Zhu <hongxing.zhu@nxp.com>
> Cc: Francesco Dolcini <francesco.dolcini@toradex.com>; Mark Brown
> <broonie@kernel.org>; l.stach@pengutronix.de; bhelgaas@google.com;
> lorenzo.pieralisi@arm.com; jingoohan1@gmail.com;
> linux-pci@vger.kernel.org; dl-linux-imx <linux-imx@nxp.com>;
> linux-arm-kernel@lists.infradead.org; linux-kernel@vger.kernel.org;
> kernel@pengutronix.de
> Subject: Re: [PATCH v3 3/7] PCI: imx6: Fix the regulator dump when link
> never came up
>
> On Tue, Oct 26, 2021 at 09:18:39AM +0000, Richard Zhu wrote:
> > > Isn't this something that depend on the actual board design? From
> > > the driver point of view you should not silently enforce such design
> > > requirement on the board.
> > > Am I missing something here? Would be glad to you if you can clarify
> in case.
> > >
> > [Richard Zhu] Yes, it is relied on the actual HW board design.
> > This regulator is one optional, not mandatory required for all the board
> designs.
> > So, there is one _enabled or not check before manipulate this regulator.
> I think I was not clear in my question.
>
> I'm asking what's is going to happen if the vpci-e supply is used in the
> actual board design AND the same regulator is shared with another
> device (to my understanding this should be just fine from the regulator API
> point of view, correct me if I'm wrong).
[Richard Zhu] Yes, agree with you.
It should be fine from the regulator API point of view.
BR
Richard
>
> I'm not talking about board designed by NXP in which such use case might
> not exist.
>
> Francesco
_______________________________________________
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-10-28 6:48 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-22 7:12 [PATCH v3 0/7] PCI: imx6: refine codes and add compliance tests mode support Richard Zhu
2021-10-22 7:12 ` Richard Zhu
2021-10-22 7:12 ` [PATCH v3 1/7] PCI: imx6: Encapsulate the clock enable into one standalone function Richard Zhu
2021-10-22 7:12 ` Richard Zhu
2021-10-22 7:12 ` [PATCH v3 2/7] PCI: imx6: Add the error propagation from host_init Richard Zhu
2021-10-22 7:12 ` Richard Zhu
2021-10-22 7:12 ` [PATCH v3 3/7] PCI: imx6: Fix the regulator dump when link never came up Richard Zhu
2021-10-22 7:12 ` Richard Zhu
2021-10-25 11:13 ` Francesco Dolcini
2021-10-25 11:13 ` Francesco Dolcini
2021-10-25 11:23 ` Mark Brown
2021-10-25 11:23 ` Mark Brown
2021-10-26 2:18 ` Richard Zhu
2021-10-26 2:18 ` Richard Zhu
2021-10-26 8:52 ` Francesco Dolcini
2021-10-26 8:52 ` Francesco Dolcini
2021-10-26 9:06 ` Richard Zhu
2021-10-26 9:06 ` Richard Zhu
2021-10-26 9:11 ` Francesco Dolcini
2021-10-26 9:11 ` Francesco Dolcini
2021-10-26 9:18 ` Richard Zhu
2021-10-26 9:18 ` Richard Zhu
2021-10-26 9:48 ` Francesco Dolcini
2021-10-26 9:48 ` Francesco Dolcini
2021-10-28 6:48 ` Richard Zhu [this message]
2021-10-28 6:48 ` Richard Zhu
2021-10-26 10:58 ` Mark Brown
2021-10-26 10:58 ` Mark Brown
2021-10-28 6:50 ` Richard Zhu
2021-10-28 6:50 ` Richard Zhu
2021-10-28 11:50 ` Mark Brown
2021-10-28 11:50 ` Mark Brown
2021-10-29 3:58 ` Richard Zhu
2021-10-29 3:58 ` Richard Zhu
2021-10-29 11:46 ` Mark Brown
2021-10-29 11:46 ` Mark Brown
2021-11-01 1:46 ` Richard Zhu
2021-11-01 1:46 ` Richard Zhu
2021-10-26 1:57 ` Richard Zhu
2021-10-26 1:57 ` Richard Zhu
2021-10-22 7:12 ` [PATCH v3 4/7] PCI: imx6: move the clock disable function to a proper place Richard Zhu
2021-10-22 7:12 ` Richard Zhu
2021-10-22 7:12 ` [PATCH v3 5/7] PCI: dwc: add a new callback host exit function into host ops Richard Zhu
2021-10-22 7:12 ` Richard Zhu
2021-10-22 7:12 ` [PATCH v3 6/7] PCI: imx6: Fix the reference handling unbalance when link never came up Richard Zhu
2021-10-22 7:12 ` Richard Zhu
2021-10-22 7:12 ` [PATCH v3 7/7] PCI: imx6: Add the compliance tests mode support Richard Zhu
2021-10-22 7:12 ` Richard Zhu
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