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Shengjiu Wang a63907c8c7 pmdomain: imx: gpcv2: Adjust delay after power up handshake ... commit 2379fb937d upstream. The udelay(5) is not enough, sometimes below kernel panic still be triggered: [ 4.012973] Kernel panic - not syncing: Asynchronous SError Interrupt [ 4.012976] CPU: 2 UID: 0 PID: 186 Comm: (udev-worker) Not tainted 6.12.0-rc2-0.0.0-devel-00004-g8b1b79e88956 #1 [ 4.012982] Hardware name: Toradex Verdin iMX8M Plus WB on Dahlia Board (DT) [ 4.012985] Call trace: [...] [ 4.013029] arm64_serror_panic+0x64/0x70 [ 4.013034] do_serror+0x3c/0x70 [ 4.013039] el1h_64_error_handler+0x30/0x54 [ 4.013046] el1h_64_error+0x64/0x68 [ 4.013050] clk_imx8mp_audiomix_runtime_resume+0x38/0x48 [ 4.013059] __genpd_runtime_resume+0x30/0x80 [ 4.013066] genpd_runtime_resume+0x114/0x29c [ 4.013073] __rpm_callback+0x48/0x1e0 [ 4.013079] rpm_callback+0x68/0x80 [ 4.013084] rpm_resume+0x3bc/0x6a0 [ 4.013089] __pm_runtime_resume+0x50/0x9c [ 4.013095] pm_runtime_get_suppliers+0x60/0x8c [ 4.013101] __driver_probe_device+0x4c/0x14c [ 4.013108] driver_probe_device+0x3c/0x120 [ 4.013114] __driver_attach+0xc4/0x200 [ 4.013119] bus_for_each_dev+0x7c/0xe0 [ 4.013125] driver_attach+0x24/0x30 [ 4.013130] bus_add_driver+0x110/0x240 [ 4.013135] driver_register+0x68/0x124 [ 4.013142] __platform_driver_register+0x24/0x30 [ 4.013149] sdma_driver_init+0x20/0x1000 [imx_sdma] [ 4.013163] do_one_initcall+0x60/0x1e0 [ 4.013168] do_init_module+0x5c/0x21c [ 4.013175] load_module+0x1a98/0x205c [ 4.013181] init_module_from_file+0x88/0xd4 [ 4.013187] __arm64_sys_finit_module+0x258/0x350 [ 4.013194] invoke_syscall.constprop.0+0x50/0xe0 [ 4.013202] do_el0_svc+0xa8/0xe0 [ 4.013208] el0_svc+0x3c/0x140 [ 4.013215] el0t_64_sync_handler+0x120/0x12c [ 4.013222] el0t_64_sync+0x190/0x194 [ 4.013228] SMP: stopping secondary CPUs The correct way is to wait handshake, but it needs BUS clock of BLK-CTL be enabled, which is in separate driver. So delay is the only option here. The udelay(10) is a data got by experiment. Fixes: e8dc41afca ("pmdomain: imx: gpcv2: Add delay after power up handshake") Reported-by: Francesco Dolcini <francesco@dolcini.it> Closes: https://lore.kernel.org/lkml/20241007132555.GA53279@francesco-nb/ Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Cc: stable@vger.kernel.org Message-ID: <20241121075231.3910922-1-shengjiu.wang@nxp.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2024-12-14 20:03:26 +01:00
..
actions	pmdomain: Use device_get_match_data()	2023-10-17 11:45:11 +02:00
amlogic	pmdomain: amlogic: remove obsolete vpu domain driver	2024-08-05 12:48:42 +02:00
apple	pmdomain: apple: Make apple_pmgr_reset_ops static	2024-08-20 11:28:01 +02:00
arm	pmdomain: arm: Use FLAG_DEV_NAME_FW to ensure unique names	2024-10-30 17:11:56 +01:00
bcm	pmdomain: raspberrypi-power: set flag GENPD_FLAG_ACTIVE_WAKEUP	2024-08-14 14:22:39 +02:00
imx	pmdomain: imx: gpcv2: Adjust delay after power up handshake	2024-12-14 20:03:26 +01:00
mediatek	pmdomain: mediatek: make use of dev_err_cast_probe()	2024-09-13 12:48:34 +02:00
qcom	pmdomain: qcom-cpr: Fix the return of uninitialized variable	2024-10-02 12:38:53 +02:00
renesas	pmdomain: renesas: rmobile-sysc: Use for_each_child_of_node_scoped()	2024-06-05 11:52:39 +02:00
rockchip	pmdomain: rockchip: Add gating masks for rk3576	2024-09-13 13:01:47 +02:00
samsung	pmdomain: samsung: Move Kconfig option to the pmdomain subsystem	2023-10-04 23:41:56 +02:00
st	pmdomain: st: Add a Kconfig option for the ux500 power domain	2023-10-04 23:41:56 +02:00
starfive	pmdomain: starfive: Update prefixes for AON power domain	2023-10-04 23:41:57 +02:00
sunxi	pmdomain: sunxi: Move Kconfig option to the pmdomain subsystem	2023-10-04 23:41:56 +02:00
tegra	pmdomain: core: constify of_phandle_args in xlate	2024-02-14 10:26:11 +01:00
ti	pmdomain: ti-sci: Add missing of_node_put() for args.np	2024-12-05 14:01:32 +01:00
xilinx	pmdomain: core: constify of_phandle_args in xlate	2024-02-14 10:26:11 +01:00
core.c	pmdomain: core: Fix error path in pm_genpd_init() when ida alloc fails	2024-12-14 20:03:16 +01:00
governor.c	PM: domains: Move genpd and its governor to the pmdomain subsystem	2023-12-18 12:49:48 +01:00
Kconfig	pmdomain: arm_scmi: Move Kconfig options to the pmdomain subsystem	2023-11-23 17:32:53 +01:00
Makefile	PM: domains: Move genpd and its governor to the pmdomain subsystem	2023-12-18 12:49:48 +01:00