From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Yan Subject: [PATCH v2 1/4] dt-bindings: power: reset: add document for reboot-mode driver Date: Tue, 12 Jan 2016 19:29:49 +0800 Message-ID: <1452598189-8272-1-git-send-email-andy.yan@rock-chips.com> References: <1452598029-8222-1-git-send-email-andy.yan@rock-chips.com> Return-path: In-Reply-To: <1452598029-8222-1-git-send-email-andy.yan-TNX95d0MmH7DzftRWevZcw@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org, arnd-r2nGTMty4D4@public.gmane.org, john.stultz-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org Cc: linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org, galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org, ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, catalin.marinas-5wv7dgnIgG8@public.gmane.org, geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org, sre-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org, dbaryshkov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, alexandre.belloni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org, jun.nie-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, pawel.moll-5wv7dgnIgG8@public.gmane.org, f.fainelli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, will.deacon-5wv7dgnIgG8@public.gmane.org, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, lorenzo.pieralisi-5wv7dgnIgG8@public.gmane.org, moritz.fischer-+aYTwkv1SeIAvxtiuMwx3w@public.gmane.org, cernekee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org, Andy Yan List-Id: devicetree@vger.kernel.org add device tree binding document for reboot-mode driver Signed-off-by: Andy Yan --- Changes in v2: None Changes in v1: None .../bindings/power/reset/reboot-mode.txt | 41 +++++++++++++++++ .../bindings/power/reset/syscon-reboot-mode.txt | 52 ++++++++++++++++++++++ 2 files changed, 93 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/reset/reboot-mode.txt create mode 100644 Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.txt diff --git a/Documentation/devicetree/bindings/power/reset/reboot-mode.txt b/Documentation/devicetree/bindings/power/reset/reboot-mode.txt new file mode 100644 index 0000000..81d9f66 --- /dev/null +++ b/Documentation/devicetree/bindings/power/reset/reboot-mode.txt @@ -0,0 +1,41 @@ +Generic reboot mode core map driver + +This driver get reboot mode arguments and call the write +interface to stores the magic value in special register +or ram . Then the bootloader can read it and take different +action according to the argument stored. + +Required properties: +- compatible: only support "syscon-reboot-mode" now. + +Each mode is represented as a sub-node of reboot_mode: + +Subnode required properties: +- linux,mode: reboot mode command,such as "loader", "recovery", "fastboot". +- loader,magic: magic number for the mode, this is vendor specific. + +Example: + reboot_mode { + compatible = "syscon-reboot-mode"; + offset = <0x40>; + + loader { + linux,mode = "loader"; + loader,magic = ; + }; + + maskrom { + linux,mode = "maskrom"; + loader,magic = ; + }; + + recovery { + linux,mode = "recovery"; + loader,magic = ; + }; + + fastboot { + linux,mode = "fastboot"; + loader,magic = ; + }; + }; diff --git a/Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.txt b/Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.txt new file mode 100644 index 0000000..6bce7dd --- /dev/null +++ b/Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.txt @@ -0,0 +1,52 @@ +SYSCON reboot mode driver + +This driver get reboot mode magic value form reboot-mode driver +and stores it in a SYSCON mapped register. Then the bootloader +can read it and take different action according to the magic +value stored. + +This DT node should be represented as a sub-node of a "syscon", "simple-mfd" +node. + +Required properties: +- compatible: should be "syscon-reboot-mode" +- offset: offset in the register map for the storage register (in bytes) + +The rest of the properties should follow the generic reboot-mode discription +found in reboot-mode.txt + +Example: + pmu: pmu@20004000 { + compatible = "rockchip,rk3066-pmu", "syscon", "simple-mfd"; + reg = <0x20004000 0x100>; + + reboot-mode { + compatible = "syscon-reboot-mode"; + offset = <0x40>; + + normal { + linux,mode = "normal"; + loader,magic = ; + }; + + loader { + linux,mode = "loader"; + loader,magic = ; + }; + + maskrom { + linux,mode = "maskrom"; + loader,magic = ; + }; + + recovery { + linux,mode = "recovery"; + loader,magic = ; + }; + + fastboot { + linux,mode = "fastboot"; + loader,magic = ; + }; + }; + }; -- 1.9.1 -- 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