Changes since v4: - Address comments from Stephen and Bjorn These patches add support for reading a shared memory database in the newer QCOM SoCs called Command DB. With the new architecture on SDM845, shared resources like clocks, regulators etc., have dynamic properties. These properties may change based on external components, board configurations or available feature set. A remote processor detects these parameters and fills up the database with the resource and available state information. Platform drivers that need these shared resources will need to query this database to get the address and properties and vote for the state. The information in the database is static. The database is read-only memory location that is available for Linux. A pre-defined string is used as a key into an entry in the database. Generally, platform drivers query the database only at init to get the information they need. [v1]: https://www.spinics.net/lists/linux-arm-msm/msg32462.html [v2]: https://lkml.org/lkml/2018/2/8/588 [v3]: https://lkml.org/lkml/2018/2/16/842 [v4]: https://patchwork.kernel.org/patch/10242935/ Lina Iyer (2): drivers: qcom: add command DB driver dt-bindings: introduce Command DB for QCOM SoCs .../devicetree/bindings/soc/qcom/cmd-db.txt | 38 +++ drivers/of/platform.c | 1 + drivers/soc/qcom/Kconfig | 9 + drivers/soc/qcom/Makefile | 1 + drivers/soc/qcom/cmd-db.c | 326 +++++++++++++++++++++ include/soc/qcom/cmd-db.h | 45 +++ 6 files changed, 420 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/qcom/cmd-db.txt create mode 100644 drivers/soc/qcom/cmd-db.c create mode 100644 include/soc/qcom/cmd-db.h -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project -- To unsubscribe from this list: send the line "unsubscribe linux-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
