29 lines
945 B
Text
29 lines
945 B
Text
|
HWKM (Hardware Key Manager)
|
||
|
|
|
||
|
|
The HWKM driver is a platform device driver that helps
|
||
|
|
communicating with both the master and slave blocks of the
|
||
|
|
hardware key manager to issue commands to perform key operations
|
||
|
|
mainly required for storage encryption.
|
||
|
|
|
||
|
|
Required properties:
|
||
|
|
- compatible : Should be "qcom,hwkm".
|
||
|
|
- reg: Register set for both master and slaves.
|
||
|
|
- reg-names : Identifiers for parsing master and slave regs.
|
||
|
|
- clocks : clocks needed for operating master and the slave.
|
||
|
|
- clock-names : name identifiers corresponding to the clocks.
|
||
|
|
- qcom,enable-hwkm-clk: to ensure clocks can be handled by HLOS.
|
||
|
|
- qcom,op-freq-hz: Max frequency of the listed clocks.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
|
||
|
|
qcom_hwkm: hwkm@10c0000 {
|
||
|
|
compatible = "qcom,hwkm";
|
||
|
|
reg = <0x10c0000 0x9000>, <0x1d90000 0x9000>;
|
||
|
|
reg-names = "km_master", "ice_slave";
|
||
|
|
qcom,enable-hwkm-clk;
|
||
|
|
|
||
|
|
clock-names = "km_clk_src";
|
||
|
|
clocks = <&clock_rpmh RPMH_HWKM_CLK>;
|
||
|
|
qcom,op-freq-hz = <75000000>;
|
||
|
|
};
|