[PATCH v4 2/4] dts: arm64: imx8mq: Add dbi2 and atu reg for i.MX8MQ PCIe EP

[Hongxing Zhu]

> -----Original Message-----
> From: Shawn Guo <shawnguo2 at yeah.net>
> Sent: 2024年8月13日 10:51
> To: Hongxing Zhu <hongxing.zhu at nxp.com>
> Cc: robh at kernel.org; krzk+dt at kernel.org; conor+dt at kernel.org;
> shawnguo at kernel.org; l.stach at pengutronix.de; devicetree at vger.kernel.org;
> linux-pci at vger.kernel.org; linux-arm-kernel at lists.infradead.org;
> linux-kernel at vger.kernel.org; kernel at pengutronix.de; imx at lists.linux.dev
> Subject: Re: [PATCH v4 2/4] dts: arm64: imx8mq: Add dbi2 and atu reg for
> i.MX8MQ PCIe EP
> 
> On Mon, Jul 29, 2024 at 09:56:43AM +0800, Richard Zhu wrote:
> > Add dbi2 and iatu reg for i.MX8MQ PCIe EP.
> >
> > For i.MX8M PCIe EP, the dbi2 and atu addresses are pre-defined in the
> > driver. This method is not good.
> >
> > In commit b7d67c6130ee ("PCI: imx6: Add iMX95 Endpoint (EP) support"),
> > Frank suggests to fetch the dbi2 and atu from DT directly. This commit
> > is preparation to do that for i.MX8MQ PCIe EP.
> >
> > These changes wouldn't break driver function. When "dbi2" and "atu"
> > properties are present, i.MX PCIe driver would fetch the according
> > base addresses from DT directly. If only two reg properties are
> > provided, i.MX PCIe driver would fall back to the old method.
> >
> > Signed-off-by: Richard Zhu <hongxing.zhu at nxp.com>
> > Reviewed-by: Frank Li <Frank.Li at nxp.com>
> 
> "arm64: dts: ..." for subject prefix.
Sorry, would be correct in v5.

Best Regards
Richard Zhu
> 
> Shawn