43 lines
1.1 KiB
Plaintext
43 lines
1.1 KiB
Plaintext
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* Data Capture and Compare (DCC)
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DCC (Data Capture and Compare) is a DMA engine, which is used to save
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configuration data or system memory contents during catastrophic failure or
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SW trigger.
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It can also perform CRC over the same configuration or memory space.
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Required properties:
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- compatible : name of the component used for driver matching, should be
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"qcom,dcc"
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- reg : physical base address and length of the register set(s), SRAM and XPU
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of the component.
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- reg-names : names corresponding to each reg property value.
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Optional properties:
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- qcom,save-reg: boolean, To save dcc registers state in memory after dcc
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enable and disable
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- qcom,data-sink: string, To specify default data sink for dcc, should be one
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of the following:
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"atb" : To send captured data over ATB to a trace sink
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"sram" : To save captured data in dcc internal SRAM.
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Example:
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dcc: dcc@4b3000 {
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compatible = "qcom,dcc";
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reg = <0x4b3000 0x1000>,
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<0x4b4000 0x2000>,
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<0x4b0000 0x1>;
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reg-names = "dcc-base", "dcc-ram-base", "dcc-xpu-base";
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clocks = <&clock_gcc clk_gcc_dcc_ahb_clk>;
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clock-names = "dcc_clk";
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qcom,save-reg;
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};
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