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author | Arnd Bergmann <arnd@arndb.de> | 2018-09-26 17:18:42 +0200 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2018-09-26 17:18:53 +0200 |
commit | ba61ab1a232d75a8bf92bbfedc10162a6e7e95c7 (patch) | |
tree | b0dc602d23a3925bcbcd1826436501a676d53140 /Documentation/devicetree/bindings | |
parent | Merge tag 'at91-4.20-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into next/drivers (diff) | |
parent | firmware: xilinx: Add debugfs for query data API (diff) | |
download | linux-dev-ba61ab1a232d75a8bf92bbfedc10162a6e7e95c7.tar.xz linux-dev-ba61ab1a232d75a8bf92bbfedc10162a6e7e95c7.zip |
Merge tag 'zynqmp-soc-for-v4.20-v2' of https://github.com/Xilinx/linux-xlnx into next/drivers
arm64: zynqmp: SoC changes for v4.20
- Adding firmware API for SoC with debugfs interface
Firmware driver communicates to Platform Management Unit (PMU) by using
SMC instructions routed to Arm Trusted Firmware (ATF). Initial version
adds support for base firmware driver with query and clock APIs.
EEMI spec is available here:
https://www.xilinx.com/support/documentation/user_guides/ug1200-eemi-api.pdf
* tag 'zynqmp-soc-for-v4.20-v2' of https://github.com/Xilinx/linux-xlnx:
firmware: xilinx: Add debugfs for query data API
firmware: xilinx: Add debugfs interface
firmware: xilinx: Add clock APIs
firmware: xilinx: Add query data API
firmware: xilinx: Add Zynqmp firmware driver
dt-bindings: firmware: Add bindings for ZynqMP firmware
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'Documentation/devicetree/bindings')
-rw-r--r-- | Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt new file mode 100644 index 000000000000..1b431d9bbe44 --- /dev/null +++ b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt @@ -0,0 +1,29 @@ +----------------------------------------------------------------- +Device Tree Bindings for the Xilinx Zynq MPSoC Firmware Interface +----------------------------------------------------------------- + +The zynqmp-firmware node describes the interface to platform firmware. +ZynqMP has an interface to communicate with secure firmware. Firmware +driver provides an interface to firmware APIs. Interface APIs can be +used by any driver to communicate to PMUFW(Platform Management Unit). +These requests include clock management, pin control, device control, +power management service, FPGA service and other platform management +services. + +Required properties: + - compatible: Must contain: "xlnx,zynqmp-firmware" + - method: The method of calling the PM-API firmware layer. + Permitted values are: + - "smc" : SMC #0, following the SMCCC + - "hvc" : HVC #0, following the SMCCC + +------- +Example +------- + +firmware { + zynqmp_firmware: zynqmp-firmware { + compatible = "xlnx,zynqmp-firmware"; + method = "smc"; + }; +}; |