[U-Boot] [PATCH 3/5] fsl: csu: add an API to set individual device access permission

[Zhiqiang Hou]

Hi Prabhakar,

Thanks for your comments!

> -----Original Message-----
> From: Prabhakar Kushwaha
> Sent: 2016年7月21日 12:39
> To: Zhiqiang Hou <zhiqiang.hou at nxp.com>; u-boot at lists.denx.de;
> albert.u.boot at aribaud.net; york sun <york.sun at nxp.com>; wd at denx.de;
> alison.wang at freescale.com; Mingkai.Hu at freescale.com
> Cc: yao.yuan at freescale.com; Qianyu.Gong at freescale.com;
> bmeng.cn at gmail.com; Shengzhou Liu <shengzhou.liu at nxp.com>; Zhiqiang Hou
> <zhiqiang.hou at nxp.com>
> Subject: RE: [PATCH 3/5] fsl: csu: add an API to set individual device access
> permission
> 
> 
> > -----Original Message-----
> > From: Zhiqiang Hou [mailto:Zhiqiang.Hou at nxp.com]
> > Sent: Monday, July 04, 2016 11:58 AM
> > To: u-boot at lists.denx.de; albert.u.boot at aribaud.net; york sun
> > <york.sun at nxp.com>; wd at denx.de; Prabhakar Kushwaha
> > <prabhakar.kushwaha at nxp.com>; alison.wang at freescale.com;
> > Mingkai.Hu at freescale.com
> > Cc: yao.yuan at freescale.com; Qianyu.Gong at freescale.com;
> > bmeng.cn at gmail.com; Shengzhou Liu <shengzhou.liu at nxp.com>; Zhiqiang
> > Hou <zhiqiang.hou at nxp.com>
> > Subject: [PATCH 3/5] fsl: csu: add an API to set individual device
> > access permission
> >
> > From: Hou Zhiqiang <Zhiqiang.Hou at nxp.com>
> >
> > Add this API to make the individual device is able to be set to the
> > specified permission.
> >
> 
> I am curious about requirement of devices to configure CSU in their driver.
> Why cannot it be done during early boot sequence as part of normal boot-flow for
> all devices
> 
All devices' access permission is set based on the array ns_dev[] during early boot sequence.
But there is a workaround for PCIE errata need to modify the CSU according to the current
serdes protocol.

Thanks,
Zhiqiang