kernel/linux.git/drivers/pmdomain/imx, branch v6.12.80

pmdomain: imx8m-blk-ctrl: fix out-of-range access of bc->domains

2026-02-11T12:40:16+00:00

commit 6bd8b4a92a901fae1a422e6f914801063c345e8d upstream. Fix out-of-range access of bc->domains in imx8m_blk_ctrl_remove(). Fixes: 2684ac05a8c4 ("soc: imx: add i.MX8M blk-ctrl driver") Cc: stable@kernel.org Signed-off-by: Xu Yang Reviewed-by: Daniel Baluta Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman

pmdomain: imx8mp-blk-ctrl: Keep usb phy power domain on for system wakeup

2026-02-11T12:40:16+00:00

commit e2c4c5b2bbd4f688a0f9f6da26cdf6d723c53478 upstream. USB system wakeup need its PHY on, so add the GENPD_FLAG_ACTIVE_WAKEUP flags to USB PHY genpd configuration. Signed-off-by: Xu Yang Fixes: 556f5cf9568a ("soc: imx: add i.MX8MP HSIO blk-ctrl") Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman

pmdomain: imx: gpcv2: Fix the imx8mm gpu hang due to wrong adb400 reset

2026-02-11T12:40:16+00:00

commit ae0a24c5a8dcea20bf8e344eadf6593e6d1959c3 upstream. On i.MX8MM, the GPUMIX, GPU2D, and GPU3D blocks share a common reset domain. Due to this hardware limitation, powering off/on GPU2D or GPU3D also triggers a reset of the GPUMIX domain, including its ADB400 port. However, the ADB400 interface must always be placed into power‑down mode before being reset. Currently the GPUMIX and GPU2D/3D power domains rely on runtime PM to handle dependency ordering. In some corner cases, the GPUMIX power off sequence is skipped, leaving the ADB400 port active when GPU2D/3D reset. This causes the GPUMIX ADB400 port to be reset while still active, leading to unpredictable bus behavior and GPU hangs. To avoid this, refine the power‑domain control logic so that the GPUMIX ADB400 port is explicitly powered down and powered up as part of the GPU power domain on/off sequence. This ensures proper ordering and prevents incorrect ADB400 reset. Suggested-by: Lucas Stach Signed-off-by: Jacky Bai Reviewed-by: Lucas Stach Tested-by: Philipp Zabel Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman

pmdomain: imx8mp-blk-ctrl: Keep gpc power domain on for system wakeup

2026-02-11T12:40:16+00:00

commit e9ab2b83893dd03cf04d98faded81190e635233f upstream. Current design will power off all dependent GPC power domains in imx8mp_blk_ctrl_suspend(), even though the user device has enabled wakeup capability. The result is that wakeup function never works for such device. An example will be USB wakeup on i.MX8MP. PHY device '382f0040.usb-phy' is attached to power domain 'hsioblk-usb-phy2' which is spawned by hsio block control. A virtual power domain device 'genpd:3:32f10000.blk-ctrl' is created to build connection with 'hsioblk-usb-phy2' and it depends on GPC power domain 'usb-otg2'. If device '382f0040.usb-phy' enable wakeup, only power domain 'hsioblk-usb-phy2' keeps on during system suspend, power domain 'usb-otg2' is off all the time. So the wakeup event can't happen. In order to further establish a connection between the power domains related to GPC and block control during system suspend, register a genpd power on/off notifier for the power_dev. This allows us to prevent the GPC power domain from being powered off, in case the block control power domain is kept on to serve system wakeup. Suggested-by: Ulf Hansson Fixes: 556f5cf9568a ("soc: imx: add i.MX8MP HSIO blk-ctrl") Cc: stable@vger.kernel.org Signed-off-by: Xu Yang Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman

pmdomain: imx8m-blk-ctrl: Remove separate rst and clk mask for 8mq vpu

2026-01-30T09:28:46+00:00

commit 3de49966499634454fd59e0e6fecd50baab7febd upstream. For i.MX8MQ platform, the ADB in the VPUMIX domain has no separate reset and clock enable bits, but is ungated and reset together with the VPUs. So we can't reset G1 or G2 separately, it may led to the system hang. Remove rst_mask and clk_mask of imx8mq_vpu_blk_ctl_domain_data. Let imx8mq_vpu_power_notifier() do really vpu reset. Fixes: 608d7c325e85 ("soc: imx: imx8m-blk-ctrl: add i.MX8MQ VPU blk-ctrl") Signed-off-by: Ming Qian Reviewed-by: Benjamin Gaignard Reviewed-by: Peng Fan Reviewed-by: Frank Li Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman

pmdomain: imx: Fix reference count leak in imx_gpc_probe()

2026-01-08T09:14:49+00:00

commit 73cb5f6eafb0ac7aea8cdeb8ff12981aa741d8fb upstream. of_get_child_by_name() returns a node pointer with refcount incremented. Use the __free() attribute to manage the pgc_node reference, ensuring automatic of_node_put() cleanup when pgc_node goes out of scope. This eliminates the need for explicit error handling paths and avoids reference count leaks. Fixes: 721cabf6c660 ("soc: imx: move PGC handling to a new GPC driver") Cc: stable@vger.kernel.org Signed-off-by: Wentao Liang Reviewed-by: Frank Li Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman

pmdomain: imx: Fix reference count leak in imx_gpc_remove

2025-11-24T09:36:04+00:00

commit bbde14682eba21d86f5f3d6fe2d371b1f97f1e61 upstream. of_get_child_by_name() returns a node pointer with refcount incremented, we should use of_node_put() on it when not needed anymore. Add the missing of_node_put() to avoid refcount leak. Fixes: 721cabf6c660 ("soc: imx: move PGC handling to a new GPC driver") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman

imx8m-blk-ctrl: set ISI panic write hurry level

2025-08-20T16:30:27+00:00

[ Upstream commit c01fba0b4869cada5403fffff416cd1675dba078 ] Apparently, ISI needs cache settings similar to LCDIF. Otherwise we get artefacts in the image. Tested on i.MX8MP. Signed-off-by: Krzysztof Hałasa Link: https://lore.kernel.org/r/m3ldr69lsw.fsf@t19.piap.pl Signed-off-by: Ulf Hansson Signed-off-by: Sasha Levin

pmdomain: imx: gpcv2: use proper helper for property detection

2025-05-29T09:02:45+00:00

[ Upstream commit 6568cb40e73163fa25e2779f7234b169b2e1a32e ] Starting with commit c141ecc3cecd7 ("of: Warn when of_property_read_bool() is used on non-boolean properties"), probing the gpcv2 device on i.MX8M SoCs leads to warnings when LOCKDEP is enabled. Fix this by checking property presence with of_property_present as intended. Signed-off-by: Ahmad Fatoum Link: https://lore.kernel.org/r/20250218-gpcv2-of-property-present-v1-1-3bb1a9789654@pengutronix.de Signed-off-by: Ulf Hansson Signed-off-by: Sasha Levin

pmdomain: imx8mp-blk-ctrl: add missing loop break condition

2025-01-23T16:23:01+00:00

commit 726efa92e02b460811e8bc6990dd742f03b645ea upstream. Currently imx8mp_blk_ctrl_remove() will continue the for loop until an out-of-bounds exception occurs. pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : dev_pm_domain_detach+0x8/0x48 lr : imx8mp_blk_ctrl_shutdown+0x58/0x90 sp : ffffffc084f8bbf0 x29: ffffffc084f8bbf0 x28: ffffff80daf32ac0 x27: 0000000000000000 x26: ffffffc081658d78 x25: 0000000000000001 x24: ffffffc08201b028 x23: ffffff80d0db9490 x22: ffffffc082340a78 x21: 00000000000005b0 x20: ffffff80d19bc180 x19: 000000000000000a x18: ffffffffffffffff x17: ffffffc080a39e08 x16: ffffffc080a39c98 x15: 4f435f464f006c72 x14: 0000000000000004 x13: ffffff80d0172110 x12: 0000000000000000 x11: ffffff80d0537740 x10: ffffff80d05376c0 x9 : ffffffc0808ed2d8 x8 : ffffffc084f8bab0 x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffffff80d19b9420 x4 : fffffffe03466e60 x3 : 0000000080800077 x2 : 0000000000000000 x1 : 0000000000000001 x0 : 0000000000000000 Call trace: dev_pm_domain_detach+0x8/0x48 platform_shutdown+0x2c/0x48 device_shutdown+0x158/0x268 kernel_restart_prepare+0x40/0x58 kernel_kexec+0x58/0xe8 __do_sys_reboot+0x198/0x258 __arm64_sys_reboot+0x2c/0x40 invoke_syscall+0x5c/0x138 el0_svc_common.constprop.0+0x48/0xf0 do_el0_svc+0x24/0x38 el0_svc+0x38/0xc8 el0t_64_sync_handler+0x120/0x130 el0t_64_sync+0x190/0x198 Code: 8128c2d0 ffffffc0 aa1e03e9 d503201f Fixes: 556f5cf9568a ("soc: imx: add i.MX8MP HSIO blk-ctrl") Cc: stable@vger.kernel.org Signed-off-by: Xiaolei Wang Reviewed-by: Lucas Stach Reviewed-by: Fabio Estevam Reviewed-by: Frank Li Link: https://lore.kernel.org/r/20250115014118.4086729-1-xiaolei.wang@windriver.com Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman