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Message-ID: <20190421190913.1478-3-nandor.han@vaisala.com> Date: Sun, 21 Apr 2019 19:09:30 +0000 From: Han Nandor <nandor.han@...sala.com> To: "sre@...nel.org" <sre@...nel.org>, "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "robh+dt@...nel.org" <robh+dt@...nel.org>, "mark.rutland@....com" <mark.rutland@....com>, "devicetree@...r.kernel.org" <devicetree@...r.kernel.org> CC: Han Nandor <nandor.han@...sala.com> Subject: [PATCH v3 2/2] dt-bindings: power: reset: add document for NVMEM based reboot-mode Add the device tree bindings document for the NVMEM based reboot-mode driver. Signed-off-by: Nandor Han <nandor.han@...sala.com> --- .../power/reset/nvmem-reboot-mode.txt | 32 +++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/reset/nvmem-reboot-mode.txt diff --git a/Documentation/devicetree/bindings/power/reset/nvmem-reboot-mode.txt b/Documentation/devicetree/bindings/power/reset/nvmem-reboot-mode.txt new file mode 100644 index 000000000000..2e1b86c31cb3 --- /dev/null +++ b/Documentation/devicetree/bindings/power/reset/nvmem-reboot-mode.txt @@ -0,0 +1,32 @@ +NVMEM reboot mode driver + +This driver gets reboot mode magic value from reboot-mode driver +and stores it in a NVMEM cell named "reboot-mode". 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 "simple-mfd" +node. + +Required properties: +- compatible: should be "nvmem-reboot-mode". +- nvmem-cells: A phandle to the reboot mode provided by a nvmem device. +- nvmem-cell-names: Should be "reboot-mode". + +The rest of the properties should follow the generic reboot-mode description +found in reboot-mode.txt + +Example: + reboot-mode-nvmem@0 { + compatible = "simple-mfd"; + reboot-mode { + compatible = "nvmem-reboot-mode"; + nvmem-cells = <&reboot_mode>; + nvmem-cell-names = "reboot-mode"; + + mode-normal = <0xAAAA5501>; + mode-bootloader = <0xBBBB5500>; + mode-recovery = <0xCCCC5502>; + mode-test = <0xDDDD5503>; + }; + }; -- 2.17.2
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