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| author | Linus Walleij <linusw@kernel.org> | 2026-06-30 18:05:56 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2026-08-05 16:48:11 +0100 |
| commit | bb3b2cfeb206f5b10b859e134651b54120e3f530 (patch) | |
| tree | 6717fcea088ba5c5f15002a48101fa2537135bf2 /Documentation/driver-api/xilinx | |
| download | linux-stable-bb3b2cfeb206f5b10b859e134651b54120e3f530.tar.gz linux-stable-bb3b2cfeb206f5b10b859e134651b54120e3f530.zip | |
ARM: 9480/1: entry: expand comment in __switch_tografted
As per discussion between the developers in the mail thread
linked, expand the comment in __switch_to so that readers
of the code understand what is going on.
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'Documentation/driver-api/xilinx')
| -rw-r--r-- | Documentation/driver-api/xilinx/eemi.rst | 40 | ||||
| -rw-r--r-- | Documentation/driver-api/xilinx/index.rst | 9 |
2 files changed, 49 insertions, 0 deletions
diff --git a/Documentation/driver-api/xilinx/eemi.rst b/Documentation/driver-api/xilinx/eemi.rst new file mode 100644 index 000000000..c1bc47b90 --- /dev/null +++ b/Documentation/driver-api/xilinx/eemi.rst @@ -0,0 +1,40 @@ +==================================== +Xilinx Zynq MPSoC EEMI Documentation +==================================== + +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 with PMC(Platform Management Controller). + +Embedded Energy Management Interface (EEMI) +---------------------------------------------- +The embedded energy management interface is used to allow software +components running across different processing clusters on a chip or +device to communicate with a power management controller (PMC) on a +device to issue or respond to power management requests. + +Any driver who wants to communicate with PMC using EEMI APIs use the +functions provided for each function. + +IOCTL +------ +IOCTL API is for device control and configuration. It is not a system +IOCTL but it is an EEMI API. This API can be used by master to control +any device specific configuration. IOCTL definitions can be platform +specific. This API also manage shared device configuration. + +The following IOCTL IDs are valid for device control: +- IOCTL_SET_PLL_FRAC_MODE 8 +- IOCTL_GET_PLL_FRAC_MODE 9 +- IOCTL_SET_PLL_FRAC_DATA 10 +- IOCTL_GET_PLL_FRAC_DATA 11 + +Refer EEMI API guide [0] for IOCTL specific parameters and other EEMI APIs. + +References +---------- +[0] Embedded Energy Management Interface (EEMI) API guide: + https://www.xilinx.com/support/documentation/user_guides/ug1200-eemi-api.pdf diff --git a/Documentation/driver-api/xilinx/index.rst b/Documentation/driver-api/xilinx/index.rst new file mode 100644 index 000000000..c95bda55d --- /dev/null +++ b/Documentation/driver-api/xilinx/index.rst @@ -0,0 +1,9 @@ + +=========== +Xilinx FPGA +=========== + +.. toctree:: + :maxdepth: 1 + + eemi |