[PATCH] ARM i.MX6: query silicon revision

[Steffen Trumtrar]

On Sat, Sep 01, 2012 at 10:53:41AM +0200, Jean-Christophe PLAGNIOL-VILLARD wrote:
> On 15:55 Fri 31 Aug     , Steffen Trumtrar wrote:
> > Read silicon revision from ???-register.
> > This is based on a7683867463481bfea84af4d60af832ddfb3da7f from u-boot.
> > The address 0x020c8260 is used and decoded. I haven't found that in my
> > datasheet, so I must trust the code to be correct.
> > At least on a SabreLite v1.0 I get the correct version though.
> > 
> > Signed-off-by: Steffen Trumtrar <s.trumtrar at pengutronix.de>
> > ---
> >  arch/arm/mach-imx/imx6.c |   36 +++++++++++++++++++++++++++++++++++-
> >  1 file changed, 35 insertions(+), 1 deletion(-)
> > 
> > diff --git a/arch/arm/mach-imx/imx6.c b/arch/arm/mach-imx/imx6.c
> > index b6067d7..9c90444 100644
> > --- a/arch/arm/mach-imx/imx6.c
> > +++ b/arch/arm/mach-imx/imx6.c
> > @@ -19,7 +19,7 @@
> >  #include <common.h>
> >  #include <io.h>
> >  #include <sizes.h>
> > -#include <mach/imx6-regs.h>
> > +#include <mach/imx-regs.h>
> >  
> >  #include "gpio.h"
> >  
> > @@ -35,6 +35,40 @@ void *imx_gpio_base[] = {
> >  
> >  int imx_gpio_count = ARRAY_SIZE(imx_gpio_base) * 32;
> >  
> > +static u32 mx6_silicon_revision;
> > +static char *mx6_rev_string = "unknown";
> > +
> > +int imx_silicon_revision(void)
> > +{
> > +	return mx6_silicon_revision;
> > +}
> > +
> > +static int query_silicon_revision(void)
> > +{
> > +	void __iomem *anatop = (void *) MX6_ANATOP_BASE_ADDR;
> > +	u32 rev, reg;
> > +
> > +	reg = readl(anatop + 0x260);
> > +	/* read mx6 variant: quad, dual, solo */
> > +	//rev = (reg >> 4) & 0xff000;
> ??

Tnx. I will fix that.

Regards,

Steffen

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