linux-kernel - Re: [PATCH] arm64: dts: imx8mq-evk: add one regulator used to power up pcie phy

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Message-ID: <20210513071420.GQ3425@dragon>
Date:   Thu, 13 May 2021 15:14:21 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Richard Zhu <hongxing.zhu@....com>
Cc:     l.stach@...gutronix.de, linux-imx@....com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: imx8mq-evk: add one regulator used to power
 up pcie phy

On Wed, Apr 14, 2021 at 10:26:14AM +0800, Richard Zhu wrote:
> 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@....com>
> Reviewed-by: Lucas Stach <l.stach@...gutronix.de>

Applied, thanks.