From mboxrd@z Thu Jan 1 00:00:00 1970 From: Carlo Caione Subject: [PATCH v2 4/4] documentation: Add secure monitor binding documentation Date: Wed, 18 May 2016 16:56:22 +0200 Message-ID: <1463583382-15614-5-git-send-email-carlo@caione.org> References: <1463583382-15614-1-git-send-email-carlo@caione.org> Return-path: In-Reply-To: <1463583382-15614-1-git-send-email-carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: 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, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org Cc: Carlo Caione List-Id: devicetree@vger.kernel.org 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 @@ -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 + +Example: + + #include + + ... + + sm { + 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