On 2021-08-18 02:58, Rob Herring wrote:
On Thu, Aug 12, 2021 at 02:47:41PM +0530, Sai Prakash Ranjan wrote:
Add device tree binding for QTI download mode cookies
region found in IMEM.
Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@xxxxxxxxxxxxxx>
---
.../bindings/arm/msm/qcom,dload-mode.yaml | 53
+++++++++++++++++++
1 file changed, 53 insertions(+)
create mode 100644
Documentation/devicetree/bindings/arm/msm/qcom,dload-mode.yaml
diff --git
a/Documentation/devicetree/bindings/arm/msm/qcom,dload-mode.yaml
b/Documentation/devicetree/bindings/arm/msm/qcom,dload-mode.yaml
new file mode 100644
index 000000000000..90b9b6a9b75e
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/msm/qcom,dload-mode.yaml
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/msm/qcom,dload-mode.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Download Mode binding
+
+maintainers:
+ - Sai Prakash Ranjan <saiprakash.ranjan@xxxxxxxxxxxxxx>
+
+description:
+ Qualcomm download mode cookies memory region in IMEM is used by SDI
+ (System Debug Image) firmware to determine whether to enter
download
+ mode or not to collect ramdump for post mortem debug.
+
+properties:
+ compatible:
+ const: qcom,dload-mode
+
+ reg:
+ maxItems: 1
+
+ qcom,sdi-disable-regs:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ description:
+ Phandle reference to a syscon representing TCSR followed by the
+ offset and length for SDI disable register.
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ imem@146aa000 {
+ compatible = "simple-mfd";
If this is just internal RAM, then we already have a binding for it and
'simple-mfd' is not it.
Hmm, I followed qcom,pil-info.yaml as a reference but maybe that's old.
+ reg = <0x146aa000 0x2000>;
+
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ ranges = <0 0x146aa000 0x2000>;
+
+ dload-mode@1c00 {
+ compatible = "qcom,dload-mode";
+ reg = <0x1c00 0x1000>;
0x1c00 + 0x1000 > 0x2000
Sorry my mistake. I am dropping this series as we will move
to using PSCI_SYSTEM_RESET2 as detailed in cover letter.
Thanks,
Sai
+ qcom,sdi-disable-regs = <&tcsr_regs 0x3a000 0x4>;
+ };
+ };
+...
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a
member
of Code Aurora Forum, hosted by The Linux Foundation
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a
member
of Code Aurora Forum, hosted by The Linux Foundation
