Hi John: Welcome. One nit. On 2016年01月27日 08:37, John Stultz wrote:
Add device tree binding document for reboot-mode driver
Maybe you want to use "sram-reboot-mode" instead of "reboot-mode" here.
Cc: Andy Yan <andy.yan@xxxxxxxxxxxxxx> Cc: Rob Herring <robh@xxxxxxxxxx> Cc: Arnd Bergmann <arnd@xxxxxxxx> Cc: Thierry Reding <treding@xxxxxxxxxx> Cc: Heiko Stübner <heiko@xxxxxxxxx> Cc: Caesar Wang <wxt@xxxxxxxxxxxxxx> Cc: Kees Cook <keescook@xxxxxxxxxxxx> Cc: Guodong Xu <guodong.xu@xxxxxxxxxx> Cc: Haojian Zhuang <haojian.zhuang@xxxxxxxxxx> Cc: Vishal Bhoj <vishal.bhoj@xxxxxxxxxx> Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx> Cc: devicetree@xxxxxxxxxxxxxxx Cc: Android Kernel Team <kernel-team@xxxxxxxxxxx> Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx> --- .../bindings/power/reset/sram-reboot-mode.txt | 47 ++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/reset/sram-reboot-mode.txt 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..33bb132 --- /dev/null +++ b/Documentation/devicetree/bindings/power/reset/sram-reboot-mode.txt @@ -0,0 +1,47 @@ +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", "simple-bus" +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", "simple-bus"; + 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>; + + none { + linux,mode = "none"; + loader,magic = <0x77665501>; + }; + + bootloader { + linux,mode = "bootloader"; + loader,magic = <0x77665500>; + }; + + recovery { + linux,mode = "recovery"; + loader,magic = <0x77665502>; + }; + }; + };
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