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. > + 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 > + 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 > >
