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| Started by | John Stultz <john.stultz@linaro.org> |
|---|---|
| First post | 2016-08-04 01:10 +0200 |
| Last post | 2016-08-04 20:10 +0200 |
| Articles | 2 — 2 participants |
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[RFC][PATCH 2/4] dt-bindings: power: reset: Add document for sram-reboot-mode driver John Stultz <john.stultz@linaro.org> - 2016-08-04 01:10 +0200
Re: [RFC][PATCH 2/4] dt-bindings: power: reset: Add document for sram-reboot-mode driver Rob Herring <robh@kernel.org> - 2016-08-04 20:10 +0200
| From | John Stultz <john.stultz@linaro.org> |
|---|---|
| Date | 2016-08-04 01:10 +0200 |
| Subject | [RFC][PATCH 2/4] dt-bindings: power: reset: Add document for sram-reboot-mode driver |
| Message-ID | <s2dst-EM-13@gated-at.bofh.it> |
Add device tree binding document for reboot-mode driver
Cc: Andy Yan <andy.yan@rock-chips.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Heiko Stübner <heiko@sntech.de>
Cc: Caesar Wang <wxt@rock-chips.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Guodong Xu <guodong.xu@linaro.org>
Cc: Haojian Zhuang <haojian.zhuang@linaro.org>
Cc: Vishal Bhoj <vishal.bhoj@linaro.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: devicetree@vger.kernel.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
---
.../bindings/power/reset/sram-reboot-mode.txt | 35 ++++++++++++++++++++++
1 file changed, 35 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..0a0ed05
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/reset/sram-reboot-mode.txt
@@ -0,0 +1,35 @@
+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" 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";
+ 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>;
+
+ mode-normal = <0x77665501>;
+ mode-bootloader = <0x77665500>;
+ mode-recovery = <0x77665502>;
+ };
+ };
--
1.9.1
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| From | Rob Herring <robh@kernel.org> |
|---|---|
| Date | 2016-08-04 20:10 +0200 |
| Subject | Re: [RFC][PATCH 2/4] dt-bindings: power: reset: Add document for sram-reboot-mode driver |
| Message-ID | <s2vfI-4wu-21@gated-at.bofh.it> |
| In reply to | #1456053 |
On Wed, Aug 03, 2016 at 04:05:21PM -0700, John Stultz wrote:
> Add device tree binding document for reboot-mode driver
>
> Cc: Andy Yan <andy.yan@rock-chips.com>
> Cc: Rob Herring <robh@kernel.org>
> Cc: Arnd Bergmann <arnd@arndb.de>
> Cc: Thierry Reding <treding@nvidia.com>
> Cc: Heiko Stübner <heiko@sntech.de>
> Cc: Caesar Wang <wxt@rock-chips.com>
> Cc: Kees Cook <keescook@chromium.org>
> Cc: Guodong Xu <guodong.xu@linaro.org>
> Cc: Haojian Zhuang <haojian.zhuang@linaro.org>
> Cc: Vishal Bhoj <vishal.bhoj@linaro.org>
> Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
> Cc: devicetree@vger.kernel.org
> Cc: Android Kernel Team <kernel-team@android.com>
> Signed-off-by: John Stultz <john.stultz@linaro.org>
> ---
> .../bindings/power/reset/sram-reboot-mode.txt | 35 ++++++++++++++++++++++
> 1 file changed, 35 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..0a0ed05
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/reset/sram-reboot-mode.txt
> @@ -0,0 +1,35 @@
> +SRAM reboot mode driver
Bindings don't describe drivers.
> +
> +This driver get reboot mode magic value form reboot-mode driver
s/form/from/
> +and stores it in a SRAM address. Then the bootloader
> +can read it and take different action according to the magic
> +value stored.
Might say "on the next reboot" somewhere in here.
> +
> +This DT node should be represented as a sub-node of a "mmio-sram" 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";
> + 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>;
> +
> + mode-normal = <0x77665501>;
> + mode-bootloader = <0x77665500>;
> + mode-recovery = <0x77665502>;
> + };
> + };
> --
> 1.9.1
>
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