[U-Boot] [PATCH v2 2/5] arm: socfpga: Add checking function on FPGA setting in FDT

[Chee, Tien Fong <tien.fong.chee@intel.com>]

On Sel, 2017-08-08 at 11:29 +0200, Marek Vasut wrote:
> On 08/08/2017 11:12 AM, tien.fong.chee at intel.com wrote:
> > 
> > From: Tien Fong Chee <tien.fong.chee@intel.com>
> > 
> > Function for checking FPGA early release setting which is defined
> > by user in FDT chosen section. This function would be used by
> > later driver in decision applying appropriate FPGA configuration in
> > early release or full FPGA booting mode.
> Isn't this a property of the FPGA driver ?
> Shouldn't this have altr, prefix ?
> Did this go through DT binding review?
> 
This is our own define under chosen section. This is flag to tell U-
boot what kind of boot and what kind of fpga configuration we want
during boot.
> > 
> > Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
> > ---
> >  arch/arm/mach-socfpga/include/mach/misc.h |  1 +
> >  arch/arm/mach-socfpga/misc_arria10.c      | 20
> > ++++++++++++++++++++
> >  2 files changed, 21 insertions(+)
> > 
> > diff --git a/arch/arm/mach-socfpga/include/mach/misc.h
> > b/arch/arm/mach-socfpga/include/mach/misc.h
> > index 0b65783..e003f8a 100644
> > --- a/arch/arm/mach-socfpga/include/mach/misc.h
> > +++ b/arch/arm/mach-socfpga/include/mach/misc.h
> > @@ -26,6 +26,7 @@ static inline void socfpga_fpga_add(void) {}
> >  unsigned int dedicated_uart_com_port(const void *blob);
> >  unsigned int shared_uart_com_port(const void *blob);
> >  unsigned int uart_com_port(const void *blob);
> > +int is_early_release_fpga_config(const void *blob);
> >  #endif
> >  
> >  #endif /* _MISC_H_ */
> > diff --git a/arch/arm/mach-socfpga/misc_arria10.c b/arch/arm/mach-
> > socfpga/misc_arria10.c
> > index 9d751f6..2d6e977 100644
> > --- a/arch/arm/mach-socfpga/misc_arria10.c
> > +++ b/arch/arm/mach-socfpga/misc_arria10.c
> > @@ -235,6 +235,26 @@ unsigned int uart_com_port(const void *blob)
> >  	return shared_uart_com_port(blob);
> >  }
> >  
> > +int is_chosen_boolean_true(const void *blob, const char *name)
> > +{
> > +	int node;
> > +	int rval = 0;
> > +
> > +	node = fdt_subnode_offset(blob, 0, "chosen");
> > +
> > +	if (node >= 0)
> > +		rval = fdtdec_get_bool(blob, node, name);
> > +
> > +	return rval;
> > +}
> > +
> > +int is_early_release_fpga_config(const void *blob)
> > +{
> > +	static const char *name = "early-release-fpga-config";
> > +
> > +	return is_chosen_boolean_true(blob, name);
> > +}
> > +
> >  /*
> >   * Print CPU information
> >   */
> > 
>