From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: Re: [PATCH v2 4/4] documentation: Add secure monitor binding documentation Date: Wed, 18 May 2016 18:35:18 -0500 Message-ID: <20160518233518.GA11027@rob-hp-laptop> References: <1463583382-15614-1-git-send-email-carlo@caione.org> <1463583382-15614-5-git-send-email-carlo@caione.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1463583382-15614-5-git-send-email-carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Carlo Caione Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-amlogic-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-6IF/jdPJHihWk0Htik3J/w@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, khilman-rdvid1DuHRBWk0Htik3J/w@public.gmane.org, afaerber-l3A5Bk7waGM@public.gmane.org, arnd-r2nGTMty4D4@public.gmane.org, jens.wiklander-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, Carlo Caione List-Id: devicetree@vger.kernel.org On Wed, May 18, 2016 at 04:56:22PM +0200, Carlo Caione wrote: > From: Carlo Caione > > Add the binding documentation for the Amlogic secure monitor driver. > > Signed-off-by: Carlo Caione > --- > .../devicetree/bindings/soc/meson/meson_sm.txt | 45 ++++++++++++++++++++++ > 1 file changed, 45 insertions(+) > create mode 100644 Documentation/devicetree/bindings/soc/meson/meson_sm.txt > > diff --git a/Documentation/devicetree/bindings/soc/meson/meson_sm.txt b/Documentation/devicetree/bindings/soc/meson/meson_sm.txt > new file mode 100644 > index 0000000..f59c732 > --- /dev/null > +++ b/Documentation/devicetree/bindings/soc/meson/meson_sm.txt bindings/firmware/ > @@ -0,0 +1,45 @@ > +* Amlogic Secure Monitor > + > +In the Amlogic SoCs the Secure Monitor code is used to provide access to the > +NVMEM, enable JTAG, set USB boot, etc... > + > +Required properties for the secure monitor node: > +- compatible: Should be "amlogic,meson-sm" > +- amlogic,sm_cmd_input_base: SMC32 function identifier to read the physical > + address of the input buffer > +- amlogic,sm_cmd_output_base: SMC32 function identifier to read the physical > + address of the output buffer Use '-' rather than '_'. > + > +Example: > + > + #include > + > + ... > + > + sm { Put this under a /firmware node. > + compatible = "amlogic,meson-sm"; > + amlogic,sm_cmd_input_base = ; > + amlogic,sm_cmd_output_base = ; > + }; > + > +Node of a device using the secure monitor must have a custom property to > +specify the SMC32 function the driver is going to use. The values of all the > +SMC function identifiers are listed in a SoC-specific header file: > + > +"include/dt-bindings/soc/meson-gxbb-sm.h" - for the Meson GXBB secure monitor. > + > +Example of the node using the secure monitor: > + > + #include > + > + ... > + > + efuse: efuse { > + compatible = "amlogic,meson-gxbb-efuse"; > + amlogic,sm_cmd_read_efuse = ; > + #address-cells = <1>; > + #size-cells = <1>; > + > + ... > + }; > + > -- > 2.7.4 > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html