[U-Boot] [PATCH] armv8: layerscape: Enable EHCI access for LS1012A

[Ran Wang]

Hi York,

> -----Original Message-----
> From: York Sun
> Sent: Wednesday, July 11, 2018 05:06
> To: Ran Wang <ran.wang_1 at nxp.com>; Albert Aribaud
> <albert.u.boot at aribaud.net>
> Cc: u-boot at lists.denx.de
> Subject: Re: [PATCH] armv8: layerscape: Enable EHCI access for LS1012A
> 
> On 07/02/2018 10:34 PM, Ran Wang wrote:
> > Program Central Security Unit (CSU) to grant access permission for USB
> > 2.0 controller, otherwiase EHCI funciton will down.
> >
> > Signed-off-by: Ran Wang <ran.wang_1 at nxp.com>
> > ---
> >  arch/arm/cpu/armv8/fsl-layerscape/soc.c              | 8 ++++++++
> >  arch/arm/include/asm/arch-fsl-layerscape/ns_access.h | 1 +
> >  2 files changed, 9 insertions(+)
> >
> > diff --git a/arch/arm/cpu/armv8/fsl-layerscape/soc.c
> > b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
> > index 6a56269..2c4cf7f 100644
> > --- a/arch/arm/cpu/armv8/fsl-layerscape/soc.c
> > +++ b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
> > @@ -14,6 +14,7 @@
> >  #include <asm/io.h>
> >  #include <asm/global_data.h>
> >  #include <asm/arch-fsl-layerscape/config.h>
> > +#include <asm/arch-fsl-layerscape/ns_access.h>
> >  #ifdef CONFIG_LAYERSCAPE_NS_ACCESS
> >  #include <fsl_csu.h>
> >  #endif
> > @@ -668,6 +669,13 @@ void fsl_lsch2_early_init_f(void)
> >  			 CCI400_DVM_MESSAGE_REQ_EN |
> CCI400_SNOOP_REQ_EN);
> >  	}
> >
> > +	/*
> > +	 * Program Central Security Unit (CSU) to grant access
> > +	 * permission for USB 2.0 controller
> > +	 */
> > +#if defined(CONFIG_ARCH_LS1012A) && defined(CONFIG_USB_EHCI_FSL)
> > +	set_devices_ns_access(CSU_CSLX_USB_2, CSU_ALL_RW); #endif
> 
> Is this LS1012A specific?
> 
For Layerscape platforms, only LS1012A and LS1021A have USB2.0(EHCI) controller,
Others have USB3.0 controller only. For now I can only verify on LS1012A, so didn't
cover LS1021A yet.

Ran
> York