请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。
器件型号：AM62A7 主题中讨论的其他器件： TFP410
工具与软件：
在 am62a7上使用新的6.6内核(10 SDK)进行重启测试时、我们注意到4500次启动中有1次 PWM 出现了"内部错误：OOPS"。 请参阅日志片段：
[ 6.897404] Mem abort info: [ 6.900210] ESR = 0x0000000086000006 [ 6.907004] EC = 0x21: IABT (current EL), IL = 32 bits [ 6.912723] SET = 0, FnV = 0 [ 6.912745] EA = 0, S1PTW = 0 [ 6.912748] FSC = 0x06: level 2 translation fault [ 6.912755] user pgtable: 4k pages, 48-bit VAs, pgdp=00000000849f7000 [ 6.912761] [0000000000000000] pgd=08000000848f9003, p4d=08000000848f9003, pud=08000000848cb003, pmd=0000000000000000 [ 6.912783] Internal error: Oops: 0000000086000006 [#1] PREEMPT SMP [ 6.912791] Modules linked in: display_connector pwm_omap_dmtimer v4l2_jpeg dwc3_am62 k3_j72xx_bandgap rtc_ti_k3 rti_wdt j721e_csi2rx ti_k3_r5_remoteproc wave5 ti_k3_dsp_remoteproc videobuf2_dma_contig v4l2_mem2mem videobuf2_memops virtio_rpmsg_bus rpmsg_ns videobuf2_v4l2 rpmsg_core v4l2_async snd_soc_davinci_mcasp videobuf2_common snd_soc_ti_udma snd_soc_ti_edma tidss snd_soc_ti_sdma videodev ti_tfp410 drm_dma_helper sa2ul cdns_dphy_rx mcrc64 mc drm_kms_helper ltc2945 at24 spi_omap2_mcspi pwm_tiehrpwm optee_rng rng_core fuse drm drm_panel_orientation_quirks ipv6 [ 6.912905] CPU: 3 PID: 48 Comm: kworker/u8:3 Not tainted 6.6.32-01382-g0718452195f9-dirty #23 [ 6.912912] Hardware name: Critical Link MitySOM-AM62A (DT) [ 6.912919] Workqueue: events_unbound deferred_probe_work_func [ 6.912947] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 6.912955] pc : 0x0 [ 6.912965] lr : of_pwm_get+0x158/0x238 [ 6.912975] sp : ffff800081e6ba00 [ 6.912978] x29: ffff800081e6ba00 x28: 0000000000000000 x27: ffff0000078e1c80 [ 6.912988] x26: ffff00007fccd4c0 x25: ffff80008196ef30 x24: ffff000001123c10 [ 6.912997] x23: 0000000000000000 x22: ffff00007fccd4a8 x21: ffff00007fccd948 [ 6.913005] x20: ffff80008196ef50 x19: ffff0000063d8d80 x18: ffffffffffffffff [ 6.913014] x17: ffff7ffffc77b000 x16: ffff800081af0000 x15: ffff00000602a3da [ 6.913023] x14: ffffffffffffffff x13: 0000000000000038 x12: 0101010101010101 [ 6.913032] x11: 7f7f7f7fffffffff x10: ffff840083413df4 x9 : ffff8000806e2688 [ 6.913040] x8 : 0101010101010101 x7 : 000000000000736c x6 : 00000000000080ef [ 6.913049] x5 : fffffbfffde0a580 x4 : 0000000000000000 x3 : 0000000000000000 [ 6.913057] x2 : 0000000000000000 x1 : ffff800081e6ba68 x0 : ffff0000063d8d80 [ 6.913068] Call trace: [ 6.913071] 0x0 [ 6.913080] devm_fwnode_pwm_get+0x5c/0xb0 [ 6.913087] led_pwm_probe+0x174/0x420 [ 6.913096] platform_probe+0x70/0xf0 [ 6.913104] really_probe+0x150/0x2c0 [ 6.913111] __driver_probe_device+0x80/0x140 [ 6.913119] driver_probe_device+0xe0/0x170 [ 6.913126] __device_attach_driver+0xc0/0x148 [ 6.913134] bus_for_each_drv+0x88/0xf0 [ 6.913143] __device_attach+0xb0/0x1c0 [ 6.913151] device_initial_probe+0x1c/0x30 [ 6.913159] bus_probe_device+0xb4/0xc0 [ 6.913166] deferred_probe_work_func+0x90/0xd0 [ 6.913173] process_one_work+0x148/0x388 [ 6.913184] worker_thread+0x338/0x450 [ 6.913190] kthread+0x120/0x130 [ 6.913197] ret_from_fork+0x10/0x20 [ 6.913225] Code: ???????? ???????? ???????? ???????? (????????) [ 6.913235] ---[ end trace 0000000000000000 ]---
我们不确定这可能与什么有关。 PWM 系统是否发生了任何可能相关的重大变化？
谢谢！
Joshua Bourgeot
