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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
| commit | f4cdf7ca9a1fdcca413157df19753f388a5a224e (patch) | |
| tree | 60a31895b2446cd7fa27514e8c2843534a0de0da /Documentation/ABI/testing/debugfs-scmi-raw | |
| download | linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip | |
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab:
- v4l2-core: added ISP statistics support and per-block validation
- v4l2-core: Allow unknown HDR10 white point and luminance
- New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor
- New codec: Milos: VPU v2.0 codec support
- isp driver: gained support for Dreamchip RPPX1 ISP framework
- vsp1 driver: gained support for RZ/T2H and RZ/N2H
- Novalake driver: gained CVS support for new NVL hardware
- dvb-core: fix feed leak on failed DMX_ADD_PID
- several driver fixes, cleanups and minor improvements
* tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits)
media: ipu-bridge: check all DMI entries when overriding sensor rotation
media: v4l2-async: avoid deleting unlinked ASC entry on link error
media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement
media: intel/ipu6: fix async notifier cleanup leak on parse error
media: staging/ipu7: fix async notifier UAF on probe error path
media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path
media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem()
media: rcar-isp: Fix VSPX reference leaks
media: rcar-isp: Release ISPCORE resources
media: i2c: imx415: Release runtime PM reference on VBLANK error
media: i2c: imx415: Return test pattern write errors
media: renesas: vsp1: Declare index variables in for loop statement
media: renesas: vsp1: Make reset control optional to support platforms without a reset line
media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs
media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs
media: nxp: imx8-isi: Add additional 32-bit RGB format support
media: nxp: imx8-isi: Add 16-bit raw Bayer format support
media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams
media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks
media: nxp: imx8-isi: Correct color map between V4L2 and ISI
...
Diffstat (limited to 'Documentation/ABI/testing/debugfs-scmi-raw')
| -rw-r--r-- | Documentation/ABI/testing/debugfs-scmi-raw | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/debugfs-scmi-raw b/Documentation/ABI/testing/debugfs-scmi-raw new file mode 100644 index 000000000..5847b96b3 --- /dev/null +++ b/Documentation/ABI/testing/debugfs-scmi-raw @@ -0,0 +1,208 @@ +What: /sys/kernel/debug/scmi/<n>/raw/message +Date: March 2023 +KernelVersion: 6.3 +Contact: cristian.marussi@arm.com +Description: SCMI Raw synchronous message injection/snooping facility; write + a complete SCMI synchronous command message (header included) + in little-endian binary format to have it sent to the configured + backend SCMI server for instance <n>. + Any subsequently received response can be read from this same + entry if it arrived within the configured timeout. + Each write to the entry causes one command request to be built + and sent while the replies are read back one message at time + (receiving an EOF at each message boundary). +Users: Debugging, any userspace test suite + +What: /sys/kernel/debug/scmi/<n>/raw/message_async +Date: March 2023 +KernelVersion: 6.3 +Contact: cristian.marussi@arm.com +Description: SCMI Raw asynchronous message injection/snooping facility; write + a complete SCMI asynchronous command message (header included) + in little-endian binary format to have it sent to the configured + backend SCMI server for instance <n>. + Any subsequently received response can be read from this same + entry if it arrived within the configured timeout. + Any additional delayed response received afterwards can be read + from this same entry too if it arrived within the configured + timeout. + Each write to the entry causes one command request to be built + and sent while the replies are read back one message at time + (receiving an EOF at each message boundary). +Users: Debugging, any userspace test suite + +What: /sys/kernel/debug/scmi/<n>/raw/message_poll +Date: June 2025 +KernelVersion: 6.16 +Contact: cristian.marussi@arm.com +Description: SCMI Raw message injection/snooping facility using polling mode; + write a complete SCMI command message (header included) in + little-endian binary format to have it sent to the configured + backend SCMI server for instance <n>, using polling mode on + the reception path. (if transport is polling capable) + Any subsequently received response can be read from this same + entry if it arrived within the configured timeout. + Each write to the entry causes one command request to be built + and sent while the replies are read back one message at time + (receiving an EOF at each message boundary). +Users: Debugging, any userspace test suite + +What: /sys/kernel/debug/scmi/<n>/raw/message_poll_async +Date: June 2025 +KernelVersion: 6.16 +Contact: cristian.marussi@arm.com +Description: SCMI Raw asynchronous message injection/snooping facility using + polling-mode; write a complete SCMI asynchronous command message + (header included) in little-endian binary format to have it sent + to the configured backend SCMI server for instance <n>, using + polling-mode on the reception path of the immediate part of the + asynchronous command. (if transport is polling capable) + Any subsequently received response can be read from this same + entry if it arrived within the configured timeout. + Any additional delayed response received afterwards can be read + from this same entry too if it arrived within the configured + timeout. + Each write to the entry causes one command request to be built + and sent while the replies are read back one message at time + (receiving an EOF at each message boundary). +Users: Debugging, any userspace test suite + +What: /sys/kernel/debug/scmi/<n>/raw/errors +Date: March 2023 +KernelVersion: 6.3 +Contact: cristian.marussi@arm.com +Description: SCMI Raw message errors facility; any kind of timed-out or + generally unexpectedly received SCMI message, for instance <n>, + can be read from this entry. + Each read gives back one message at time (receiving an EOF at + each message boundary). +Users: Debugging, any userspace test suite + +What: /sys/kernel/debug/scmi/<n>/raw/notification +Date: March 2023 +KernelVersion: 6.3 +Contact: cristian.marussi@arm.com +Description: SCMI Raw notification snooping facility; any notification + emitted by the backend SCMI server, for instance <n>, can be + read from this entry. + Each read gives back one message at time (receiving an EOF at + each message boundary). +Users: Debugging, any userspace test suite + +What: /sys/kernel/debug/scmi/<n>/raw/reset +Date: March 2023 +KernelVersion: 6.3 +Contact: cristian.marussi@arm.com +Description: SCMI Raw stack reset facility; writing a value to this entry + causes the internal queues of any kind of received message, + still pending to be read out for instance <n>, to be immediately + flushed. + Can be used to reset and clean the SCMI Raw stack between to + different test-run. +Users: Debugging, any userspace test suite + +What: /sys/kernel/debug/scmi/<n>/raw/channels/<m>/message +Date: March 2023 +KernelVersion: 6.3 +Contact: cristian.marussi@arm.com +Description: SCMI Raw synchronous message injection/snooping facility; write + a complete SCMI synchronous command message (header included) + in little-endian binary format to have it sent to the configured + backend SCMI server for instance <n> through the <m> transport + channel. + Any subsequently received response can be read from this same + entry if it arrived on channel <m> within the configured + timeout. + Each write to the entry causes one command request to be built + and sent while the replies are read back one message at time + (receiving an EOF at each message boundary). + Channel identifier <m> matches the SCMI protocol number which + has been associated with this transport channel in the DT + description, with base protocol number 0x10 being the default + channel for this instance. + Note that these per-channel entries rooted at <..>/channels + exist only if the transport is configured to have more than + one default channel. +Users: Debugging, any userspace test suite + +What: /sys/kernel/debug/scmi/<n>/raw/channels/<m>/message_async +Date: March 2023 +KernelVersion: 6.3 +Contact: cristian.marussi@arm.com +Description: SCMI Raw asynchronous message injection/snooping facility; write + a complete SCMI asynchronous command message (header included) + in little-endian binary format to have it sent to the configured + backend SCMI server for instance <n> through the <m> transport + channel. + Any subsequently received response can be read from this same + entry if it arrived on channel <m> within the configured + timeout. + Any additional delayed response received afterwards can be read + from this same entry too if it arrived within the configured + timeout. + Each write to the entry causes one command request to be built + and sent while the replies are read back one message at time + (receiving an EOF at each message boundary). + Channel identifier <m> matches the SCMI protocol number which + has been associated with this transport channel in the DT + description, with base protocol number 0x10 being the default + channel for this instance. + Note that these per-channel entries rooted at <..>/channels + exist only if the transport is configured to have more than + one default channel. +Users: Debugging, any userspace test suite + + +What: /sys/kernel/debug/scmi/<n>/raw/channels/<m>/message_poll +Date: June 2025 +KernelVersion: 6.16 +Contact: cristian.marussi@arm.com +Description: SCMI Raw message injection/snooping facility using polling mode; + write a complete SCMI command message (header included) in + little-endian binary format to have it sent to the configured + backend SCMI server for instance <n> through the <m> transport + channel, using polling mode on the reception path. + (if transport is polling capable) + Any subsequently received response can be read from this same + entry if it arrived on channel <m> within the configured + timeout. + Each write to the entry causes one command request to be built + and sent while the replies are read back one message at time + (receiving an EOF at each message boundary). + Channel identifier <m> matches the SCMI protocol number which + has been associated with this transport channel in the DT + description, with base protocol number 0x10 being the default + channel for this instance. + Note that these per-channel entries rooted at <..>/channels + exist only if the transport is configured to have more than + one default channel. +Users: Debugging, any userspace test suite + +What: /sys/kernel/debug/scmi/<n>/raw/channels/<m>/message_poll_async +Date: June 2025 +KernelVersion: 6.16 +Contact: cristian.marussi@arm.com +Description: SCMI Raw asynchronous message injection/snooping facility using + polling-mode; write a complete SCMI asynchronous command message + (header included) in little-endian binary format to have it sent + to the configured backend SCMI server for instance <n> through + the <m> transport channel, using polling mode on the reception + path of the immediate part of the asynchronous command. + (if transport is polling capable) + Any subsequently received response can be read from this same + entry if it arrived on channel <m> within the configured + timeout. + Any additional delayed response received afterwards can be read + from this same entry too if it arrived within the configured + timeout. + Each write to the entry causes one command request to be built + and sent while the replies are read back one message at time + (receiving an EOF at each message boundary). + Channel identifier <m> matches the SCMI protocol number which + has been associated with this transport channel in the DT + description, with base protocol number 0x10 being the default + channel for this instance. + Note that these per-channel entries rooted at <..>/channels + exist only if the transport is configured to have more than + one default channel. +Users: Debugging, any userspace test suite |
