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Add the A9 (S8003) G5P render driver used by the merged PowerVR/G5P Mesa winsys as kernel patches, enable it on J71t in the device tree, set CONFIG_DRM_APPLE_G5P=y for apple-16k, and add an install-time recipe that extracts the original META LDR (apple/agx-g5p-c0.ldr) from the device's own iOS kernelcache into /lib/firmware. No firmware is committed. The driver provides TYPED_V3 rendering, GEM buffers, VM/arena mappings, PRIME import/export, syncobj, bounded retirement and recovery. It does not expose the old compute or fixed-fixture ABI. Hardware: the exact kernel this derives from (brkosebay/linux a9/gpu-pr1 407b7bf2cbbe) booted on a J71t with the merged Mesa, rendered labwc on the GPU with KMS scanout at 60 Hz, and passed the G5P device rungs with zero GPU events. This Orchard adaptation itself has not yet been built by orchard or run on hardware. Assisted-by: LLM
kernel/configs/apple-16k/config: CONFIG_DRM_APPLE_G5P=y These options provide g5p and its Kconfig dependencies on both page sizes. Assisted-by: LLM
kernel/configs/apple-16k/config: CONFIG_APPLE_AOP_GYRO=m CONFIG_APPLE_AOP_PRESSURE=m These options provide aop and its Kconfig dependencies on both page sizes. Assisted-by: LLM
kernel/configs/apple-16k/config: # CONFIG_NVME_APPLE_ANS_EARLY_USB is not set These options provide warm-storage and its Kconfig dependencies on both page sizes. kernel/configs/apple-4k/config: # CONFIG_NVME_APPLE_ANS_EARLY_USB is not set These options provide warm-storage and its Kconfig dependencies on both page sizes. Assisted-by: LLM
Assisted-by: LLM
Assisted-by: LLM
Assisted-by: LLM
kernel/configs/apple-16k/config: CONFIG_APPLE_AOP_GYRO=m CONFIG_APPLE_AOP_PRESSURE=m These options provide aop and its Kconfig dependencies on both page sizes. Assisted-by: LLM
Assisted-by: LLM
Assisted-by: LLM
Assisted-by: LLM
kernel/configs/apple-16k/config: # CONFIG_NVME_APPLE_ANS_EARLY_USB is not set These options provide warm-storage and its Kconfig dependencies on both page sizes. kernel/configs/apple-4k/config: # CONFIG_NVME_APPLE_ANS_EARLY_USB is not set These options provide warm-storage and its Kconfig dependencies on both page sizes. Assisted-by: LLM
Assisted-by: LLM
Assisted-by: LLM
Bring this branch onto current main and the series it depends on. The merge keeps the other side's tree; the next commit carries the reworked version of this branch's change.
A Mac grants an iPad more than the standard USB current, but the charger took the gadget's reported budget unchecked and the composite gadget could draw the extra current while the bus was suspended. Cap and log the USB host budget in the TriStar charger, draw no extra Apple current while suspended, and let the initramfs and orchard USB helpers opt J71t into the Mac current profile. Documented in docs/bring-up/charging/j71t-mac-current.md, with tests. Assisted-by: LLM
Bring this branch onto current main and the series it depends on. The merge keeps the other side's tree; the next commit carries the reworked version of this branch's change.
Bring this branch onto current main and the series it depends on. The merge keeps the other side's tree; the next commit carries the reworked version of this branch's change.
The A9 AOP hosts the accelerometer, gyroscope, pressure and ambient-light sensors. Its firmware needs boot arguments and per-device calibration that m1n1 did not pass on S8003, and a reloaded AOP (after kexec or sleep) lost its sensor firmware state, so the sensors did not come back. m1n1 passes the A9 AOP boot arguments and sensor calibration. The kernel selects a certified AOP reload path through device-tree match data (bindings, DT, mailbox, pmdomain, IIO and AOP driver patches), keeps the AOP power domain and firmware state for that reload, and refuses a suspend that would interrupt the firmware's boot. The J71t firmware recipe gains the AOP pieces, the gyroscope and pressure drivers are enabled, and J71t's accelerometer and gyroscope move from missing to working, and its light sensor from untested to working. Assisted-by: LLM
The USB serial number changed between installed boots and RAM sessions, so the host saw a new device every boot and could not keep its SSH known_hosts entry or serial console name. Share one BOARD/hashed-ID serial format between installed boots and RAM sessions (usb-identity), and get the per-boot SSH identity through the existing ACM console. Documented in docs/device-protocol.md, with tests. Assisted-by: LLM
Opening the Smart Cover should wake the iPad, but the PMIC GPIO driver had no notion of wake-only events, and arming the cover events while the cover was absent aborted every suspend. Describe wake-only events in the apple,d2365-pmic-gpio binding, let the driver wake from sleep on the listed GPIO events, and list the Smart Cover events in the J71t DT. Assisted-by: LLM
Bring this branch onto current main. The merge keeps the other side's tree; the next commit carries the reworked version of this branch's change.
Bring this branch onto current main and the series it depends on. The merge keeps the other side's tree; the next commit carries the reworked version of this branch's change.
Bring this branch onto current main and the series it depends on. The merge keeps the other side's tree; the next commit carries the reworked version of this branch's change.
Bring this branch onto current main and the series it depends on. The merge keeps the other side's tree; the next commit carries the reworked version of this branch's change.
Bring this branch onto current main and the series it depends on. The merge keeps the other side's tree; the next commit carries the reworked version of this branch's change.
Bring this branch onto current main and the series it depends on. The merge keeps the other side's tree; the next commit carries the reworked version of this branch's change.
A7-A9 have no EL2 and boot without any PSCI firmware, so Linux on an iPad 5 could not bring secondary CPUs down and up again, and a kexec had nowhere to park them. CPU hotplug, kexec and a clean poweroff all need a PSCI implementation that stays resident after m1n1 hands over. Carry m1n1 patches that keep a small EL3 PSCI implementation resident: CPU_ON/CPU_OFF with a firmware rendezvous (EL1 WFI/WFE trap to EL3), SYSTEM_OFF, and a guarded SYSTEM_RESET that boots the default entry again. The loader marks retained hardware in the device tree after a PSCI re-entry. The resident PSCI is on by default on these SoCs; the shipped boot framing keeps psci_reset=0, so SYSTEM_RESET stays off unless a loader enables it. Adds boot/m1n1/psci-loader and its tests. Assisted-by: LLM
The TriStar charger subscribed to the PMU's RTC event 16 for source identification. An acknowledgement there could take the RTC's wake event, and the polled cover inputs had no driver enabled. Give RTC event 16 to the RTC alone and keep the PMU and RTC event split (DT, RTC and USB patches), so one consumer's acknowledgement cannot take the other's wake event. Enable KEYBOARD_GPIO_POLLED for the polled cover inputs. Assisted-by: LLM
On J71t the NVMe controller (ANS) sits behind the H9P PCIe port, and resetting that port loses the controller until a cold boot. A kexec therefore has to hand over a stopped but powered ANS, with its DART translations retained, or the next kernel loses its root filesystem. The first version of this handoff panicked when a step failed, which with panic=0 is an indefinite hang. Keep the certified ANS kexec handoff: DT and bindings describe it, the DART, H9P and NVMe drivers stop queues and translations in order and the next kernel picks them up, and core/printk export what the modules need. Every failure on the outgoing side now ends in a native cold reset through apple_cold_reset() instead of a panic, with explicit returns after it. The port is handed over powered, with PERST# asserted and the link stopped, and the incoming kernel brings it up with the cold-boot sequence (port power cycle, NVMe mode, port enable, then link training). Retraining the powered port by PERST# alone, as iOS never does, left the root port in Detect.Quiet and cost a timeout on every warm boot. Assisted-by: LLM
After a kexec the next kernel found the S8000 GPIO controller with interrupt modes armed by the previous kernel, the PIO SPI controller with queued transfers and an asserted chip select, and the touch controller still running. An orphaned GPIO interrupt fires forever and touch did not come back. Retire inherited GPIO interrupt modes before the chained parent interrupts are enabled, drain and idle the S8000 PIO SPI controller on shutdown and at probe, and stop the Apple Z2 touch controller before its SPI parent shuts down. Assisted-by: LLM
A warm restart through kexec needs the next kernel to see the pristine device tree from boot, the pstore region, the display state and the power domains that must not be cut while the next kernel starts. DT, OF, DRM, pmdomain and pstore patches retain the board-selected warm handoff state, so probe and shutdown keep what the next kernel needs: the pristine boot device tree, the pstore region, the display state and the Apple pmgr warm hold. The Orchard service file learns the retained state. Assisted-by: LLM
On a tethered J71t boot a restart must be a native cold reset, but the watchdog's restart handler ran below PSCI's, and its restart guard dereferenced a parent that probe never set. Describe J71t's tethered boot in DT. On such a board the watchdog restart handler registers above PSCI and performs the native cold reset; in the warm and soft modes it leaves the watchdog alone and returns success, so PSCI's restart runs. Probe sets the parent before registering, and the restart callback tolerates a missing one. Other devices keep the current priority. Assisted-by: LLM
Suspend on J71t lost the NVMe controller (its port must keep power and refclk), the DART translations, the USB gadget link and Wi-Fi after resume, and drivers could only refuse sleep after the filesystems had been synced. Add a driver admission step and a precheck notifier before sync to the PM core, with a suspend_ready report. Pair suspend to idle with retained ANS power in the H9P driver, stop and rebuild the ANS DART and NVMe controller around sleep, keep the dwc2 gadget connected, stop the VXD firmware, and keep Wi-Fi down when its link is lost. The PMIC GPIO driver refuses sleep when it cannot program the wake mask, the charger uses J71t's plug event as a wake source, and the J71t DT enables paired sleep, the s2idle gadget and charger wake. On restart and poweroff, NVMe stops the Apple ANS as it does before a kexec, and the H9P driver hands the S8003 ports off in the same powered state; these two patches sit here because they build on this topic's H9P and NVMe sleep code. Assisted-by: LLM
The A9 GPU (PowerVR-derived G5P) had no kernel driver, so the desktop rendered in software. Add the apple-g5p DRM driver: bindings and J71t DT, the render/compute UAPI, the firmware transport and recovery core, buffer VMs with cache visibility, typed render and compute submission, and the GEM exporter's CPU cache contract. The firmware recipe extracts the G5P firmware from the device's own IPSW (src/orchard/apple/agx_g5p.py), and DRM_APPLE_G5P is enabled for apple-16k. Assisted-by: LLM
Each render job paid a fixed host cost (serial submission, polling after events, uninterruptible VM binds), which capped frame rates well below the GPU's capacity. Account per-job GPU and host time, reduce serial job overhead, make VM binds killable and tune post-event polling, record joint latency, pipeline two render jobs deep, honour fragment-only waits, start the next job early during the 3D wait, gate TA PM records on dirty state, and default to the measured pipeline configuration. Assisted-by: LLM
The GPU blocked every system sleep, and an idle GPU kept its power on because the firmware was never allowed to park itself. Let the firmware self-park after bring-up and ring a parked firmware without the GPC settle wait. Implement a bounded retained system sleep: register the reservation as a suspend admission, hold clients across it, answer the readiness query, and refuse sleep with a named reason while work, a kexec power hold or pmgr's gfx hold is active. pmdomain ends the warm boot hold at sync_state, the gfx gate is cycled with auto-PM like pmgr-pwrstate, and the other admission users name their refusals too. Assisted-by: LLM
Bring this branch onto current main. Main has since merged OrchardLinux#124, OrchardLinux#122, OrchardLinux#118, OrchardLinux#121, OrchardLinux#110, OrchardLinux#127, OrchardLinux#101, OrchardLinux#126, OrchardLinux#108 and OrchardLinux#111, several in part or reworked, and OrchardLinux#123 and OrchardLinux#128 were closed. Where main carries a topic, main's version is kept; the left-out parts that warm restart and suspend need come back in OrchardLinux#107 and OrchardLinux#117.
Bring this branch onto current main. Main has since merged OrchardLinux#124, OrchardLinux#122, OrchardLinux#118, OrchardLinux#121, OrchardLinux#110, OrchardLinux#127, OrchardLinux#101, OrchardLinux#126, OrchardLinux#108 and OrchardLinux#111, several in part or reworked, and OrchardLinux#123 and OrchardLinux#128 were closed. Where main carries a topic, main's version is kept; the left-out parts that warm restart and suspend need come back in OrchardLinux#107 and OrchardLinux#117. This branch's own patches in drivers/usb are renumbered to follow main's.
Bring this branch onto current main. Main has since merged OrchardLinux#124, OrchardLinux#122, OrchardLinux#118, OrchardLinux#121, OrchardLinux#110, OrchardLinux#127, OrchardLinux#101, OrchardLinux#126, OrchardLinux#108 and OrchardLinux#111, several in part or reworked, and OrchardLinux#123 and OrchardLinux#128 were closed. Where main carries a topic, main's version is kept; the left-out parts that warm restart and suspend need come back in OrchardLinux#107 and OrchardLinux#117. This branch's own patches in devices/s8000, drivers/base and drivers/usb are renumbered to follow main's.
Bring this branch onto current main. Main has since merged OrchardLinux#124, OrchardLinux#122, OrchardLinux#118, OrchardLinux#121, OrchardLinux#110, OrchardLinux#127, OrchardLinux#101, OrchardLinux#126, OrchardLinux#108 and OrchardLinux#111, several in part or reworked, and OrchardLinux#123 and OrchardLinux#128 were closed. Where main carries a topic, main's version is kept; the left-out parts that warm restart and suspend need come back in OrchardLinux#107 and OrchardLinux#117. This branch's own patches in devices/s8000, drivers/base and drivers/usb are renumbered to follow main's.
Bring this branch onto current main. Main has since merged OrchardLinux#124, OrchardLinux#122, OrchardLinux#118, OrchardLinux#121, OrchardLinux#110, OrchardLinux#127, OrchardLinux#101, OrchardLinux#126, OrchardLinux#108 and OrchardLinux#111, several in part or reworked, and OrchardLinux#123 and OrchardLinux#128 were closed. Where main carries a topic, main's version is kept; the left-out parts that warm restart and suspend need come back in OrchardLinux#107 and OrchardLinux#117. This branch's own patches in devices/s8000, drivers/base, drivers/pmdomain and drivers/usb are renumbered to follow main's.
The A9 AOP driver on main reads apple,aop-target, apple,chip-id and apple,chip-revision, and the motion sensor drivers read their factory calibration, from properties the bootloader fills in. Nothing on main fills them in; going by the driver's probe, the A9 AOP cannot start without them (read from the code, not run). This is the m1n1 patch that fills them in, from OrchardLinux#101, unchanged. Assisted-by: LLM
From OrchardLinux#101, the part that main did not take with the sensors: the retained AOP reload across kexec (checksummed shutdown log, power-state observer, pr_flush export, warm_state attribute). The sensor parts that main carries are left out of these patches; what remains applies on top of main's AOP driver and its fresh-start order. Assisted-by: LLM
From OrchardLinux#110, the part main did not take with the stable USB serial: the platform layer embeds each supported board's pristine DTB and a compatible-to-file map in the initrd. Before switching root, the initrd copies the running board's tree to /run/orchard-kexec/pristine.dtb, or, after a warm restart, the retained tree the previous kernel named with orchard_warm.dtb=, and records the boot ID next to it. Warm restart boots the next kernel with that tree, never with one rebuilt from an updated /boot. No feature table is added: whether warm restart is offered is decided from the mechanisms it uses, not from a feature state. Assisted-by: LLM
Bring this branch onto current main. Main has since merged OrchardLinux#124, OrchardLinux#122, OrchardLinux#118, OrchardLinux#121, OrchardLinux#110, OrchardLinux#127, OrchardLinux#101, OrchardLinux#126, OrchardLinux#108 and OrchardLinux#111, several in part or reworked, and OrchardLinux#123 and OrchardLinux#128 were closed. Where main carries a topic, main's version is kept; the left-out parts that warm restart and suspend need come back in OrchardLinux#107 and OrchardLinux#117. This branch's own patches in devices/s8000, drivers/base, drivers/pmdomain and drivers/usb are renumbered to follow main's.
Bring this branch onto current main. Main has since merged OrchardLinux#124, OrchardLinux#122, OrchardLinux#118, OrchardLinux#121, OrchardLinux#110, OrchardLinux#127, OrchardLinux#101, OrchardLinux#126, OrchardLinux#108 and OrchardLinux#111, several in part or reworked, and OrchardLinux#123 and OrchardLinux#128 were closed. Where main carries a topic, main's version is kept; the left-out parts that warm restart and suspend need come back in OrchardLinux#107 and OrchardLinux#117. This branch's own patches in devices/s8000, devices/t8010, drivers/base, drivers/media, drivers/pmdomain, drivers/power and drivers/usb are renumbered to follow main's. Main's versions apply first now, so 0011 in drivers/media keep their change with a diff regenerated for the new context.
From OrchardLinux#101, the suspend precheck that main did not take with the sensors. It belongs with suspend: it makes the AOP refuse a pre-sync system sleep while its firmware is starting or stopping. Assisted-by: LLM
From OrchardLinux#121, the patch main did not take with HEVC. It uses the VXD sleep stop and sleep gate this branch adds, so it sits here rather than with the earlier warm restart branch: a failed firmware stop keeps the firmware, command buffers and power, and kexec takes the cold-reset path before those pages become the next kernel's RAM. Assisted-by: LLM
Bring this branch onto current main. Main has since merged OrchardLinux#124, OrchardLinux#122, OrchardLinux#118, OrchardLinux#121, OrchardLinux#110, OrchardLinux#127, OrchardLinux#101, OrchardLinux#126, OrchardLinux#108 and OrchardLinux#111, several in part or reworked, and OrchardLinux#123 and OrchardLinux#128 were closed. Where main carries a topic, main's version is kept; the left-out parts that warm restart and suspend need come back in OrchardLinux#107 and OrchardLinux#117. This branch's own patches in devices/s8000, devices/s8003, devices/t8010, drivers/base, drivers/media, drivers/pmdomain, drivers/power and drivers/usb are renumbered to follow main's. Main's versions apply first now, so 0011 in drivers/media keep their change with a diff regenerated for the new context.
Bring this branch onto current main. Main has since merged OrchardLinux#124, OrchardLinux#122, OrchardLinux#118, OrchardLinux#121, OrchardLinux#110, OrchardLinux#127, OrchardLinux#101, OrchardLinux#126, OrchardLinux#108 and OrchardLinux#111, several in part or reworked, and OrchardLinux#123 and OrchardLinux#128 were closed. Where main carries a topic, main's version is kept; the left-out parts that warm restart and suspend need come back in OrchardLinux#107 and OrchardLinux#117. This branch's own patches in devices/s8000, devices/s8003, devices/t8010, drivers/base, drivers/media, drivers/pmdomain, drivers/power and drivers/usb are renumbered to follow main's. Main's versions apply first now, so 0011 in drivers/media keep their change with a diff regenerated for the new context.
Bring this branch onto current main. Main has since merged OrchardLinux#124, OrchardLinux#122, OrchardLinux#118, OrchardLinux#121, OrchardLinux#110, OrchardLinux#127, OrchardLinux#101, OrchardLinux#126, OrchardLinux#108 and OrchardLinux#111, several in part or reworked, and OrchardLinux#123 and OrchardLinux#128 were closed. Where main carries a topic, main's version is kept; the left-out parts that warm restart and suspend need come back in OrchardLinux#107 and OrchardLinux#117. This branch's own patches in devices/s8000, devices/s8003, devices/t8010, drivers/base, drivers/media, drivers/pmdomain, drivers/power, drivers/soc-apple and drivers/usb are renumbered to follow main's. Main's versions apply first now, so 0011 in drivers/media keep their change with a diff regenerated for the new context.
On J71t a completed suspend/resume cycle does not bring the GPU back, yet the G5P sleep admission admits an idle GPU, so /sys/power/suspend_ready reads "ready" and userspace that follows it suspends into a GPU that does not come back. drivers/drm 0045 adds a read-only "suspend" parameter to the G5P driver, off by default. While it is off, the GPU's sleep admission refuses before anything is shut, and suspend_ready reads "not-ready <gpu>:resume-unsupported -95". Booting with a9_gpu_drm.suspend=1 admits sleep exactly as before. Boards without the G5P driver are not affected. The patch takes the next free number in drivers/drm, after the gpu-handover branch's 0042-0044, so every existing patch keeps its number. Assisted-by: LLM
This was referenced Nov 13, 2026
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Part 10 of 11 of the iPad 5 (J71t) series in this repository; merge after #119.
Problem
The GPU blocked every system sleep, and an idle GPU kept its power on because the firmware was never allowed to park itself.
Change
Let the firmware self-park after bring-up and ring a parked firmware without the GPC settle wait. Implement a bounded retained system sleep: register the reservation as a suspend admission, hold clients across it, answer the readiness query, and refuse sleep with a named reason while work, a kexec power hold or pmgr's gfx hold is active. pmdomain ends the warm boot hold at sync_state, the gfx gate is cycled with auto-PM like pmgr-pwrstate, and the other admission users name their refusals too. System sleep is refused by default on J71t, because GPU resume does not work yet: #117's testing reached a completed suspend cycle, but the GPU did not come back. The last patch adds a read-only
suspendparameter to the G5P driver, off by default. While it is off, the GPU's sleep admission refuses before anything is shut, and/sys/power/suspend_readyreadsnot-ready <gpu>:resume-unsupported -95. To try sleep anyway, boot witha9_gpu_drm.suspend=1; sleep is then admitted exactly as before. Boards without the G5P driver are not affected.Testing
Dependencies
Depends on #119.
This branch is stacked on the PRs it depends on and carries their commits; the change of this PR is the commit "drm/apple-g5p: Firmware park and bounded system sleep", and the merge commits after it bring the branch onto current main.
This update keeps the branch's history: it merges current main and the updated branch below it into this branch. Nothing is forced.
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