Hi, xilinx is using this interface for very long time and we can't merge our driver changes to Linux because of missing communication layer with firmware. This interface was developed before scpi and scmi was available. In connection to power management scpi and scmi are missing pieces which we already use. There is a separate discussion how to extend scmi to support all our use cases. This simply patch is not adding any power management features but only adding minimum functionality which are needed for drivers. Edgar's comment on having HVC: "We have patches for Xen that implement a power-management mediator. That implementation handles PM calls over both SMC and HVC insns. Patches are on the Xen mailing list. Other hypervisors may work differently. I think we should support both but I don't have a strong opinion on it." Thanks, Michal Changes in v2: - Move to bindings/firmware and also add it to firmware node Reported-by Rob - Add zynqmp firmware node to firmware node - Change commit message - Make zynqmp_pm_ret_code, invoke_pm_fn static Reported by Arnd - Remove pm_api_version function - no need for interface - Move driver to drivers/firmware/ Reported by Arnd and Rob Michal Simek (1): soc: xilinx: zynqmp: Add firmware interface Soren Brinkmann (2): dt: xilinx: zynqmp: Add bindings for PM firmware arm64: zynqmp: dt: Add PM firmware node .../bindings/firmware/xlnx,zynqmp-pm.txt | 22 ++ arch/arm64/boot/dts/xilinx/zynqmp.dtsi | 9 + drivers/firmware/Kconfig | 1 + drivers/firmware/Makefile | 1 + drivers/firmware/xilinx/Kconfig | 6 + drivers/firmware/xilinx/Makefile | 1 + drivers/firmware/xilinx/zynqmp/firmware.c | 382 +++++++++++++++++++++ include/linux/firmware/xilinx/zynqmp/firmware.h | 232 +++++++++++++ 8 files changed, 654 insertions(+) create mode 100644 Documentation/devicetree/bindings/firmware/xlnx,zynqmp-pm.txt create mode 100644 drivers/firmware/xilinx/Kconfig create mode 100644 drivers/firmware/xilinx/Makefile create mode 100644 drivers/firmware/xilinx/zynqmp/firmware.c create mode 100644 include/linux/firmware/xilinx/zynqmp/firmware.h -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
