From: Stefan Eichenberger <eichest@gmail.com>
To: Philipp Zabel <p.zabel@pengutronix.de>
Cc: vkoul@kernel.org, kishon@kernel.org, shawnguo@kernel.org,
s.hauer@pengutronix.de, kernel@pengutronix.de,
festevam@gmail.com, tharvey@gateworks.com, hongxing.zhu@nxp.com,
francesco.dolcini@toradex.com, linux-phy@lists.infradead.org,
imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Stefan Eichenberger <stefan.eichenberger@toradex.com>
Subject: Re: [PATCH v1 1/2] phy: freescale: imx8m-pcie: cleanup reset logic
Date: Mon, 3 Mar 2025 10:30:51 +0100 [thread overview]
Message-ID: <Z8V2yzfYGirBFi1u@eichest-laptop> (raw)
In-Reply-To: <c965906ea8797385399534e974cabdba5564ae0f.camel@pengutronix.de>
Hi Philipp,
On Fri, Feb 28, 2025 at 01:38:11PM +0100, Philipp Zabel wrote:
> On Fr, 2025-02-28 at 11:38 +0100, Stefan Eichenberger wrote:
> > From: Stefan Eichenberger <stefan.eichenberger@toradex.com>
> >
> > Remove the switch statement and base perst release on whether it is
> > found in the device tree. The probe function fails without the reset
> > property, making it mandatory. Therefore, always release reset
> > independent of the variant.
> >
> > This does not change the behavior of the driver but reduces driver
> > complexity and allows for easier future modifications.
> >
> > Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com>
> > ---
> > drivers/phy/freescale/phy-fsl-imx8m-pcie.c | 12 ++++--------
> > 1 file changed, 4 insertions(+), 8 deletions(-)
> >
> > diff --git a/drivers/phy/freescale/phy-fsl-imx8m-pcie.c b/drivers/phy/freescale/phy-fsl-imx8m-pcie.c
> > index e98361dcdeadf..00f957a42d9dc 100644
> > --- a/drivers/phy/freescale/phy-fsl-imx8m-pcie.c
> > +++ b/drivers/phy/freescale/phy-fsl-imx8m-pcie.c
> > @@ -141,15 +141,11 @@ static int imx8_pcie_phy_power_on(struct phy *phy)
> > IMX8MM_GPR_PCIE_REF_CLK_PLL);
> > usleep_range(100, 200);
> >
> > - switch (imx8_phy->drvdata->variant) {
> > - case IMX8MP:
> > + if (imx8_phy->perst)
>
> This check is not necessary, reset_control_deassert(NULL) is a no-op:
>
Thanks for the feedback, I will remove the check in the next version.
Regards,
Stefan
next prev parent reply other threads:[~2025-03-03 9:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-28 10:38 [PATCH v1 0/2] phy: freescale: imx8m-pcie: fix and cleanup phy Stefan Eichenberger
2025-02-28 10:38 ` [PATCH v1 1/2] phy: freescale: imx8m-pcie: cleanup reset logic Stefan Eichenberger
2025-02-28 12:38 ` Philipp Zabel
2025-03-03 9:30 ` Stefan Eichenberger [this message]
2025-02-28 10:38 ` [PATCH v1 2/2] phy: freescale: imx8m-pcie: assert phy reset and perst in power off Stefan Eichenberger
2025-02-28 12:38 ` Philipp Zabel
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