linux-kernel - RE: [PATCH v2 4/5] PCI: uniphier: Add iATU register support

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Message-ID: <DM5PR12MB1276D6181D86C8DF0F98427ADABD0@DM5PR12MB1276.namprd12.prod.outlook.com>
Date:   Fri, 15 May 2020 13:16:05 +0000
From:   Gustavo Pimentel <Gustavo.Pimentel@...opsys.com>
To:     Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Jingoo Han <jingoohan1@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>
CC:     "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Masami Hiramatsu <masami.hiramatsu@...aro.org>,
        Jassi Brar <jaswinder.singh@...aro.org>
Subject: RE: [PATCH v2 4/5] PCI: uniphier: Add iATU register support

Hi Kunihiko,

On Fri, May 15, 2020 at 10:59:2, Kunihiko Hayashi 
<hayashi.kunihiko@...ionext.com> wrote:

> This gets iATU register area from reg property. In Synopsis DWC version

s/Synopsis/Synopsys
in all patches

> 4.80 or later, since iATU register area is separated from core register
> area, this area is necessary to get from DT independently.
> 
> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
> ---
>  drivers/pci/controller/dwc/pcie-uniphier.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/pci/controller/dwc/pcie-uniphier.c b/drivers/pci/controller/dwc/pcie-uniphier.c
> index a8dda39..493f105 100644
> --- a/drivers/pci/controller/dwc/pcie-uniphier.c
> +++ b/drivers/pci/controller/dwc/pcie-uniphier.c
> @@ -447,6 +447,13 @@ static int uniphier_pcie_probe(struct platform_device *pdev)
>  	if (IS_ERR(priv->pci.dbi_base))
>  		return PTR_ERR(priv->pci.dbi_base);
>  
> +	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "atu");
> +	if (res) {
> +		priv->pci.atu_base = devm_pci_remap_cfg_resource(dev, res);
> +		if (IS_ERR(priv->pci.atu_base))
> +			priv->pci.atu_base = NULL;
> +	}
> +
>  	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "link");
>  	priv->base = devm_ioremap_resource(dev, res);
>  	if (IS_ERR(priv->base))
> -- 
> 2.7.4