From: Han Nandor <nandor.han@vaisala.com>
To: "sre@kernel.org" <sre@kernel.org>,
"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"robh+dt@kernel.org" <robh+dt@kernel.org>,
"mark.rutland@arm.com" <mark.rutland@arm.com>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>
Cc: Han Nandor <nandor.han@vaisala.com>
Subject: [PATCH v2 2/2] dt-bindings: power: reset: add document for NVMEM based reboot-mode
Date: Thu, 11 Apr 2019 05:54:14 +0000 [thread overview]
Message-ID: <20190411055341.9263-3-nandor.han@vaisala.com> (raw)
In-Reply-To: <20190411055341.9263-1-nandor.han@vaisala.com>
Add the device tree bindings document for the NVMEM based reboot-mode
driver.
Signed-off-by: Nandor Han <nandor.han@vaisala.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
next prev parent reply other threads:[~2019-04-11 5:54 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-11 5:54 [PATCH v2 0/2] Use NVMEM as reboot-mode write interface Han Nandor
2019-04-11 5:54 ` Han Nandor
2019-04-11 5:54 ` [PATCH v2 1/2] power: reset: nvmem-reboot-mode: use NVMEM as reboot mode " Han Nandor
2019-04-11 5:54 ` Han Nandor
2019-04-17 21:56 ` Sebastian Reichel
2019-04-17 21:56 ` Sebastian Reichel
2019-04-18 6:29 ` Nandor Han
2019-04-18 6:29 ` Nandor Han
2019-04-18 9:46 ` Sebastian Reichel
2019-04-18 9:46 ` Sebastian Reichel
2019-04-11 5:54 ` Han Nandor [this message]
2019-04-11 5:54 ` [PATCH v2 2/2] dt-bindings: power: reset: add document for NVMEM based reboot-mode Han Nandor
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