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From: Lucas Stach <l.stach@pengutronix.de>
To: lorenzo.pieralisi@arm.com
Cc: linux-pci@vger.kernel.org, linux-imx@nxp.com,
	 linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,  kernel@pengutronix.de,
	Richard Zhu <hongxing.zhu@nxp.com>,
	 andrew.smirnov@gmail.com, shawnguo@kernel.org, kw@linux.com,
	bhelgaas@google.com,  stefan@agner.ch
Subject: Re: [RESEND v4 1/2] dt-bindings: imx6q-pcie: add one regulator used to power up pcie phy
Date: Thu, 06 May 2021 18:08:24 +0200	[thread overview]
Message-ID: <7900502879b346e18727f956965ace34a146c0f1.camel@pengutronix.de> (raw)
In-Reply-To: <1617091701-6444-2-git-send-email-hongxing.zhu@nxp.com>

Hi Lorenzo,

have those two patches fallen through some crack? AFAICS they are gone
from patchwork, but I also can't find them in any branch in the usual
git repos.

Regards,
Lucas

Am Dienstag, dem 30.03.2021 um 16:08 +0800 schrieb Richard Zhu:
> Both 1.8v and 3.3v power supplies can be used by i.MX8MQ PCIe PHY.
> In default, the PCIE_VPH voltage is suggested to be 1.8v refer to data
> sheet. When PCIE_VPH is supplied by 3.3v in the HW schematic design,
> the VREG_BYPASS bits of GPR registers should be cleared from default
> value 1b'1 to 1b'0. Thus, the internal 3v3 to 1v8 translator would be
> turned on.
> 
> Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
> Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
> ---
>  Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
> index de4b2baf91e8..d8971ab99274 100644
> --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
> +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
> @@ -38,6 +38,9 @@ Optional properties:
>    The regulator will be enabled when initializing the PCIe host and
>    disabled either as part of the init process or when shutting down the
>    host.
> +- vph-supply: Should specify the regulator in charge of VPH one of the three
> +  PCIe PHY powers. This regulator can be supplied by both 1.8v and 3.3v voltage
> +  supplies.
>  
> 
>  Additional required properties for imx6sx-pcie:
>  - clock names: Must include the following additional entries:



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  reply	other threads:[~2021-05-06 16:10 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-30  8:08 [RESEND v4 0/2] add one regulator used to power up pcie phy Richard Zhu
2021-03-30  8:08 ` [RESEND v4 1/2] dt-bindings: imx6q-pcie: " Richard Zhu
2021-05-06 16:08   ` Lucas Stach [this message]
2021-05-06 21:01     ` Bjorn Helgaas
2021-05-14  8:35       ` [EXT] " Richard Zhu
2021-03-30  8:08 ` [RESEND v4 2/2] PCI: imx: clear vreg bypass when pcie vph voltage is 3v3 Richard Zhu
2021-05-06 21:09   ` Bjorn Helgaas
2021-05-14  8:36     ` [EXT] " Richard Zhu

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