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[73.67.244.238]) by smtp.gmail.com with ESMTPSA id m24sm15050482pfi.34.2016.08.03.16.05.30 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 03 Aug 2016 16:05:31 -0700 (PDT) From: John Stultz To: lkml Cc: John Stultz , Andy Yan , Rob Herring , Arnd Bergmann , Thierry Reding , =?UTF-8?q?Heiko=20St=C3=BCbner?= , Caesar Wang , Kees Cook , Guodong Xu , Haojian Zhuang , Vishal Bhoj , Bjorn Andersson , devicetree@vger.kernel.org, Android Kernel Team Subject: [RFC][PATCH 2/4] dt-bindings: power: reset: Add document for sram-reboot-mode driver Date: Wed, 3 Aug 2016 16:05:21 -0700 Message-Id: <1470265523-27557-3-git-send-email-john.stultz@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1470265523-27557-1-git-send-email-john.stultz@linaro.org> References: <1470265523-27557-1-git-send-email-john.stultz@linaro.org> MIME-Version: 1.0 Add device tree binding document for reboot-mode driver Cc: Andy Yan Cc: Rob Herring Cc: Arnd Bergmann Cc: Thierry Reding Cc: Heiko Stübner Cc: Caesar Wang Cc: Kees Cook Cc: Guodong Xu Cc: Haojian Zhuang Cc: Vishal Bhoj Cc: Bjorn Andersson Cc: devicetree@vger.kernel.org Cc: Android Kernel Team Signed-off-by: John Stultz --- .../bindings/power/reset/sram-reboot-mode.txt | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/reset/sram-reboot-mode.txt -- 1.9.1 diff --git a/Documentation/devicetree/bindings/power/reset/sram-reboot-mode.txt b/Documentation/devicetree/bindings/power/reset/sram-reboot-mode.txt new file mode 100644 index 0000000..0a0ed05 --- /dev/null +++ b/Documentation/devicetree/bindings/power/reset/sram-reboot-mode.txt @@ -0,0 +1,35 @@ +SRAM reboot mode driver + +This driver get reboot mode magic value form reboot-mode driver +and stores it in a SRAM address. 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 "mmio-sram" node. + +Required properties: +- compatible: should be "sram-reboot-mode" +- reg: offset from the sram range where to store the magic value(in bytes) + +The rest of the properties should follow the generic reboot-mode discription +found in reboot-mode.txt + +Example: + + sram@5f01000 { + compatible = "mmio-sram"; + reg = <0x0 0x05f01000 0x0 0x00001000>; + ranges = <0x0 0x0 0x05f01000 0x00001000>; + + #address-cells = <1>; + #size-cells = <1>; + + reboot-mode@0 { + compatible = "sram-reboot-mode"; + reg = <0x0 0x4>; + + mode-normal = <0x77665501>; + mode-bootloader = <0x77665500>; + mode-recovery = <0x77665502>; + }; + };