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Date: Tue, 12 Jan 2016 19:29:49 +0800
From: Andy Yan <andy.yan@...k-chips.com>
To: heiko@...ech.de, arnd@...db.de, john.stultz@...aro.org
Cc: linux@...ck-us.net, galak@...eaurora.org,
ijc+devicetree@...lion.org.uk, robh+dt@...nel.org,
catalin.marinas@....com, geert+renesas@...der.be, sre@...nel.org,
olof@...om.net, dbaryshkov@...il.com,
alexandre.belloni@...e-electrons.com, jun.nie@...aro.org,
pawel.moll@....com, f.fainelli@...il.com, will.deacon@....com,
linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
linux-pm@...r.kernel.org, linux@....linux.org.uk,
linux-arm-kernel@...ts.infradead.org, lorenzo.pieralisi@....com,
moritz.fischer@...us.com, cernekee@...il.com,
linux-kernel@...r.kernel.org, dwmw2@...radead.org,
mark.rutland@....com, maxime.ripard@...e-electrons.com,
Andy Yan <andy.yan@...k-chips.com>
Subject: [PATCH v2 1/4] dt-bindings: power: reset: add document for reboot-mode driver
add device tree binding document for reboot-mode driver
Signed-off-by: Andy Yan <andy.yan@...k-chips.com>
---
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 = <BOOT_LOADER>;
+ };
+
+ maskrom {
+ linux,mode = "maskrom";
+ loader,magic = <BOOT_MASKROM>;
+ };
+
+ recovery {
+ linux,mode = "recovery";
+ loader,magic = <BOOT_RECOVERY>;
+ };
+
+ fastboot {
+ linux,mode = "fastboot";
+ loader,magic = <BOOT_FASTBOOT>;
+ };
+ };
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@...04000 {
+ compatible = "rockchip,rk3066-pmu", "syscon", "simple-mfd";
+ reg = <0x20004000 0x100>;
+
+ reboot-mode {
+ compatible = "syscon-reboot-mode";
+ offset = <0x40>;
+
+ normal {
+ linux,mode = "normal";
+ loader,magic = <BOOT_NORMAL>;
+ };
+
+ loader {
+ linux,mode = "loader";
+ loader,magic = <BOOT_LOADER>;
+ };
+
+ maskrom {
+ linux,mode = "maskrom";
+ loader,magic = <BOOT_MASKROM>;
+ };
+
+ recovery {
+ linux,mode = "recovery";
+ loader,magic = <BOOT_RECOVERY>;
+ };
+
+ fastboot {
+ linux,mode = "fastboot";
+ loader,magic = <BOOT_FASTBOOT>;
+ };
+ };
+ };
--
1.9.1
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