| Message ID | 1442842703-5309-3-git-send-email-emilio.lopez@collabora.co.uk (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
Hello Emilio, On Mon, Sep 21, 2015 at 6:38 AM, Emilio López <emilio.lopez@collabora.co.uk> wrote: > Some EC implementations include a small nvram space used to store > verified boot context data. This boolean property lets us indicate > whether this space is available or not on a specific EC implementation. > > Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk> Looks good to me. Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com> Best regards, Javier -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Mon, 21 Sep 2015, Emilio López wrote: > Some EC implementations include a small nvram space used to store > verified boot context data. This boolean property lets us indicate > whether this space is available or not on a specific EC implementation. > > Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk> > --- > > Patch is new in v3, split from 3/4 > > Documentation/devicetree/bindings/mfd/cros-ec.txt | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/Documentation/devicetree/bindings/mfd/cros-ec.txt b/Documentation/devicetree/bindings/mfd/cros-ec.txt > index 1777916..136e0c2 100644 > --- a/Documentation/devicetree/bindings/mfd/cros-ec.txt > +++ b/Documentation/devicetree/bindings/mfd/cros-ec.txt > @@ -34,6 +34,10 @@ Required properties (LPC): > - compatible: "google,cros-ec-lpc" > - reg: List of (IO address, size) pairs defining the interface uses > > +Optional properties (all): > +- google,has-vbc-nvram: Some implementations of the EC include a small > + nvram space used to store verified boot context data. This boolean flag > + is used to specify whether this nvram is present or not. Is there no way to check for this at runtime? > Example for I2C: >
Hi Lee, On 22/09/15 21:34, Lee Jones wrote: > On Mon, 21 Sep 2015, Emilio López wrote: > >> Some EC implementations include a small nvram space used to store >> verified boot context data. This boolean property lets us indicate >> whether this space is available or not on a specific EC implementation. >> >> Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk> >> --- >> >> Patch is new in v3, split from 3/4 >> >> Documentation/devicetree/bindings/mfd/cros-ec.txt | 4 ++++ >> 1 file changed, 4 insertions(+) >> >> diff --git a/Documentation/devicetree/bindings/mfd/cros-ec.txt b/Documentation/devicetree/bindings/mfd/cros-ec.txt >> index 1777916..136e0c2 100644 >> --- a/Documentation/devicetree/bindings/mfd/cros-ec.txt >> +++ b/Documentation/devicetree/bindings/mfd/cros-ec.txt >> @@ -34,6 +34,10 @@ Required properties (LPC): >> - compatible: "google,cros-ec-lpc" >> - reg: List of (IO address, size) pairs defining the interface uses >> >> +Optional properties (all): >> +- google,has-vbc-nvram: Some implementations of the EC include a small >> + nvram space used to store verified boot context data. This boolean flag >> + is used to specify whether this nvram is present or not. > > Is there no way to check for this at runtime? You can issue a read and see if it succeeds, but the problem is that some EC implementations return success even when they don't implement the functionality. Cheers, Emilio -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Mon, 21 Sep 2015, Emilio López wrote: > Some EC implementations include a small nvram space used to store > verified boot context data. This boolean property lets us indicate > whether this space is available or not on a specific EC implementation. > > Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk> > --- > > Patch is new in v3, split from 3/4 > > Documentation/devicetree/bindings/mfd/cros-ec.txt | 4 ++++ > 1 file changed, 4 insertions(+) Applied, thanks. > diff --git a/Documentation/devicetree/bindings/mfd/cros-ec.txt b/Documentation/devicetree/bindings/mfd/cros-ec.txt > index 1777916..136e0c2 100644 > --- a/Documentation/devicetree/bindings/mfd/cros-ec.txt > +++ b/Documentation/devicetree/bindings/mfd/cros-ec.txt > @@ -34,6 +34,10 @@ Required properties (LPC): > - compatible: "google,cros-ec-lpc" > - reg: List of (IO address, size) pairs defining the interface uses > > +Optional properties (all): > +- google,has-vbc-nvram: Some implementations of the EC include a small > + nvram space used to store verified boot context data. This boolean flag > + is used to specify whether this nvram is present or not. > > Example for I2C: >
diff --git a/Documentation/devicetree/bindings/mfd/cros-ec.txt b/Documentation/devicetree/bindings/mfd/cros-ec.txt index 1777916..136e0c2 100644 --- a/Documentation/devicetree/bindings/mfd/cros-ec.txt +++ b/Documentation/devicetree/bindings/mfd/cros-ec.txt @@ -34,6 +34,10 @@ Required properties (LPC): - compatible: "google,cros-ec-lpc" - reg: List of (IO address, size) pairs defining the interface uses +Optional properties (all): +- google,has-vbc-nvram: Some implementations of the EC include a small + nvram space used to store verified boot context data. This boolean flag + is used to specify whether this nvram is present or not. Example for I2C:
Some EC implementations include a small nvram space used to store verified boot context data. This boolean property lets us indicate whether this space is available or not on a specific EC implementation. Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk> --- Patch is new in v3, split from 3/4 Documentation/devicetree/bindings/mfd/cros-ec.txt | 4 ++++ 1 file changed, 4 insertions(+)