Re: [PATCH v2 1/3] PCI: imx: No-op imx6_setup_phy_mpll() on i.MX7D

From: Lucas Stach <l.stach@pengutronix.de>
To: Andrey Smirnov <andrew.smirnov@gmail.com>, linux-pci@vger.kernel.org
Cc: bhelgaas@google.com, Fabio Estevam <fabio.estevam@nxp.com>,
	cphealy@gmail.com, Leonard Crestez <leonard.crestez@nxp.com>,
	"A.s. Dong" <aisheng.dong@nxp.com>,
	Richard Zhu <hongxing.zhu@nxp.com>,
	linux-imx@nxp.com, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 1/3] PCI: imx: No-op imx6_setup_phy_mpll() on i.MX7D
Date: Thu, 06 Dec 2018 10:41:33 +0100	[thread overview]
Message-ID: <1544089293.3709.53.camel@pengutronix.de> (raw)
In-Reply-To: <20181206073545.10967-2-andrew.smirnov@gmail.com>

Am Mittwoch, den 05.12.2018, 23:35 -0800 schrieb Andrey Smirnov:
> PCIE PHY IP block on i.MX7D differs from the one used on i.MX6
> family,
> so none of the code in current implementation of
> imx6_setup_phy_mpll()
> is applicable.
> 
> Cc: bhelgaas@google.com
> Cc: Fabio Estevam <fabio.estevam@nxp.com>
> Cc: cphealy@gmail.com
> Cc: l.stach@pengutronix.de
> Cc: Leonard Crestez <leonard.crestez@nxp.com>
> Cc: "A.s. Dong" <aisheng.dong@nxp.com>
> Cc: Richard Zhu <hongxing.zhu@nxp.com>
> Cc: linux-imx@nxp.com
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-kernel@vger.kernel.org
> Cc: linux-pci@vger.kernel.org
> Tested-by: Trent Piepho <tpiepho@impinj.com>
> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>

Reviewed-by: Lucas Stach <l.stach@pengutronix.de>

> ---
>  drivers/pci/controller/dwc/pci-imx6.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/pci/controller/dwc/pci-imx6.c
> b/drivers/pci/controller/dwc/pci-imx6.c
> index 2cbef2d7c207..c140f7987598 100644
> --- a/drivers/pci/controller/dwc/pci-imx6.c
> +++ b/drivers/pci/controller/dwc/pci-imx6.c
> @@ -525,6 +525,9 @@ static int imx6_setup_phy_mpll(struct imx6_pcie
> *imx6_pcie)
>  	int mult, div;
>  	u32 val;
>  
> +	if (imx6_pcie->variant == IMX7D)
> +		return 0;
> +
>  	switch (phy_rate) {
>  	case 125000000:
>  		/*