Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 35 insertions, 0 deletions

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 000000000..f7ce1d8af
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.txt
@@ -0,0 +1,35 @@
+SYSCON reboot mode driver
+
+This driver gets 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)
+
+Optional property:
+- mask: bits mask of the bits in the register to store the reboot mode magic value,
+  default set to 0xffffffff if missing.
+
+The rest of the properties should follow the generic reboot-mode description
+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>;
+			mode-normal = <BOOT_NORMAL>;
+			mode-recovery = <BOOT_RECOVERY>;
+			mode-bootloader = <BOOT_FASTBOOT>;
+			mode-loader = <BOOT_BL_DOWNLOAD>;
+		};
+	};