Hi Tommaso,
On 2022-09-23 at 17:20 +02, Tommaso Merciai <tommaso.merciai@xxxxxxxxxxxxxxxxxxxx> wrote:
> Hello Heiko,
> I'm playing with px30_mini_evb_v11_20190507 board on linux 6.0.0-rc6.
> We have some problems on "rockchip,px30-usb2phy" driver in particular in
> u2phy_otg: otg-port node (px30-evb.dts). Disabling this I'm able to boot
> the board:
>
> &u2phy {
> status = "okay";
>
> u2phy_host: host-port {
> status = "okay";
> };
>
> u2phy_otg: otg-port {
> status = "disabled";
> };
> };
>
> In particular we have some problems here:
>
> diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
> index bd0b35cac83e3..42647cd660bbf 100644
> --- a/drivers/clk/clk.c
> +++ b/drivers/clk/clk.c
> @@ -4084,7 +4084,9 @@ static int clk_nodrv_prepare_enable(struct clk_hw *hw)
>
> static void clk_nodrv_disable_unprepare(struct clk_hw *hw)
> {
> WARN_ON_ONCE(1);
> }
>
> logs:
>
> [ 1.269466] rockchip-usb2phy: probe of ff2c0000.syscon:usb2phy@100 failed with error 1
> [ 1.279044] ------------[ cut here ]------------
> [ 1.284135] WARNING: CPU: 0 PID: 1 at drivers/clk/clk.c:4087 clk_nodrv_disable_unprepare+0x4/0x10
> [ 1.293913] Modules linked in:
> [ 1.297276] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.0.0-rc6-00220-gb82580766e4c #147
> [ 1.306172] Hardware name: Rockchip PX30 EVB (DT)
> [ 1.311338] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
> [ 1.318993] pc : clk_nodrv_disable_unprepare+0x4/0x10
> [ 1.324549] lr : clk_core_disable+0x60/0xb8
> [ 1.329152] sp : ffff80000a5eba20
> [ 1.332793] x29: ffff80000a5eba20 x28: 0000000000000007 x27: ffff800009b96068
> [ 1.340657] x26: ffff800009ad0400 x25: ffff80000a52b000 x24: 0000000000000000
> [ 1.348516] x23: ffff0000038f5300 x22: 0000000000000000 x21: 0000000000000000
> [ 1.356376] x20: ffff0000038f5300 x19: ffff0000038f5300 x18: ffff000002c76610
> [ 1.364240] x17: 000000005a2f9018 x16: 000000008b35b0bc x15: ffff000003097740
> [ 1.372100] x14: 0000000000000000 x13: ffff000002c76610 x12: ffff0000030976c0
> [ 1.379961] x11: 000000ffffffffff x10: ffff000002c76618 x9 : ffff000002c76610
> [ 1.387822] x8 : ffff0000038f5300 x7 : ffff000002ce0000 x6 : 0000000000000000
> [ 1.395683] x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80000a592748
> [ 1.403545] x2 : 0000000000000001 x1 : ffff8000086d7c88 x0 : ffff00000366f8a8
> [ 1.411407] Call trace:
> [ 1.414091] clk_nodrv_disable_unprepare+0x4/0x10
> [ 1.419269] clk_core_disable_lock+0x24/0x40
> [ 1.423967] clk_core_disable_unprepare+0x18/0x38
> [ 1.429145] __clk_set_parent_after+0x60/0x68
> [ 1.433940] clk_core_set_parent_nolock+0x160/0x250
> [ 1.439311] clk_unregister+0xe4/0x240
> [ 1.443443] rockchip_usb2phy_clk480m_unregister+0x28/0x38
> [ 1.449482] devm_action_release+0x14/0x20
> [ 1.453996] release_nodes+0x40/0x70
> [ 1.457934] devres_release_all+0x94/0xe0
> [ 1.462344] device_unbind_cleanup+0x18/0x68
> [ 1.467043] really_probe+0x1d0/0x2b8
> [ 1.471070] __driver_probe_device+0x7c/0xe8
> [ 1.475771] driver_probe_device+0x38/0x100
> [ 1.480373] __driver_attach+0xa8/0x138
> [ 1.484595] bus_for_each_dev+0x7c/0xd8
> [ 1.488816] driver_attach+0x24/0x30
> [ 1.492750] bus_add_driver+0x15c/0x210
> [ 1.496968] driver_register+0x64/0x120
> [ 1.501190] __platform_driver_register+0x28/0x38
> [ 1.506367] rockchip_usb2phy_driver_init+0x1c/0x28
> [ 1.511733] do_one_initcall+0x60/0x1f0
> [ 1.515957] kernel_init_freeable+0x22c/0x2a0
> [ 1.520757] kernel_init+0x24/0x130
> [ 1.524604] ret_from_fork+0x10/0x20
> [ 1.528539] ---[ end trace 0000000000000000 ]---
> [ 1.562178] EINJ: ACPI disabled.
>
> and after a bit:
>
> [ 3.280015] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
> [ 3.280034] Mem abort info:
> [ 3.280037] ESR = 0x0000000086000004
> [ 3.280041] EC = 0x21: IABT (current EL), IL = 32 bits
> [ 3.280048] SET = 0, FnV = 0
> [ 3.280052] EA = 0, S1PTW = 0
> [ 3.280056] FSC = 0x04: level 0 translation fault
> [ 3.280061] [0000000000000000] user address but active_mm is swapper
> [ 3.280069] Internal error: Oops: 86000004 [#1] PREEMPT SMP
> [ 3.280077] Modules linked in:
> [ 3.280092] CPU: 0 PID: 9 Comm: kworker/u8:0 Tainted: G W 6.0.0-rc6-00220-gb82580766e4c #147
> [ 3.280103] Hardware name: Rockchip PX30 EVB (DT)
> [ 3.280111] Workqueue: events_unbound async_run_entry_fn
> [ 3.280140] pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
> [ 3.280150] pc : 0x0
> [ 3.280160] lr : call_timer_fn.isra.30+0x24/0x80
> [ 3.280171] sp : ffff80000a62b470
> [ 3.280175] x29: ffff80000a62b470 x28: 0000000000000010 x27: 0000000000000004
> [ 3.280190] x26: 0000000000000000 x25: 0000000000000000 x24: dead000000000122
> [ 3.280204] x23: ffff800009a03000 x22: ffff80000a1d7000 x21: 0000000000000000
> [ 3.280219] x20: 0000000000000101 x19: ffff000002d78000 x18: ffffffffffffffff
> [ 3.280234] x17: ffff800075f19000 x16: ffff800008004000 x15: 00009726b6a67ac4
> [ 3.280248] x14: 00000000000000c4 x13: 00000000000000c4 x12: ffff00007fb58d40
> [ 3.280262] x11: 4200000000000000 x10: ffff00007fb52070 x9 : 0000000000000001
> [ 3.280276] x8 : 0000000000000000 x7 : ffffffffffffffff x6 : 0000000000000000
> [ 3.280290] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000200
> [ 3.280303] x2 : 000000003fffffff x1 : 0000000000000000 x0 : ffff00000366fb10
> [ 3.280318] Call trace:
> [ 3.280322] 0x0
> [ 3.280329] run_timer_softirq+0x3c0/0x408
> [ 3.280339] __do_softirq+0x11c/0x288
> [ 3.280348] irq_exit_rcu+0xe8/0x108
> [ 3.280361] el1_interrupt+0x3c/0x70
> [ 3.280374] el1h_64_irq_handler+0x18/0x28
> [ 3.280384] el1h_64_irq+0x64/0x68
> [ 3.280391] console_emit_next_record.constprop.47+0x1a8/0x2c8
> [ 3.280404] console_unlock+0x1a0/0x1e0
> [ 3.280414] vprintk_emit+0x1c4/0x2d0
> [ 3.280423] dev_vprintk_emit+0x148/0x178
> [ 3.280431] dev_printk_emit+0x64/0x88
> [ 3.280439] __dev_printk+0x5c/0x7c
> [ 3.280447] _dev_info+0x6c/0x90
> [ 3.280455] dw_mci_setup_bus+0x114/0x218
> [ 3.280467] dw_mci_set_ios+0x12c/0x270
> [ 3.280475] mmc_power_up.part.21+0xa4/0xf8
> [ 3.280486] mmc_start_host+0xac/0xb8
> [ 3.280494] mmc_add_host+0x7c/0xe8
> [ 3.280503] dw_mci_probe+0x970/0xfc8
> [ 3.280511] dw_mci_pltfm_register+0xa0/0xd8
> [ 3.280520] dw_mci_rockchip_probe+0x84/0x148
> [ 3.280530] platform_probe+0x68/0xe0
> [ 3.280544] really_probe+0xc0/0x2b8
> [ 3.280552] __driver_probe_device+0x7c/0xe8
> [ 3.280561] driver_probe_device+0x38/0x100
> [ 3.280570] __driver_attach_async_helper+0x30/0x58
> [ 3.280579] async_run_entry_fn+0x30/0xd8
> [ 3.280590] process_one_work+0x1fc/0x350
> [ 3.280601] worker_thread+0x44/0x440
> [ 3.280609] kthread+0x10c/0x118
> [ 3.280617] ret_from_fork+0x10/0x20
> [ 3.280639] Code: bad PC value
> [ 3.280652] ---[ end trace 0000000000000000 ]---
> [ 3.280661] Kernel panic - not syncing: Oops: Fatal exception in interrupt
> [ 3.280667] SMP: stopping secondary CPUs
> [ 3.280747] Kernel Offset: disabled
> [ 3.280750] CPU features: 0x0000,00000020,00001086
> [ 3.280758] Memory Limit: none
> [ 3.696667] ---[ end Kernel panic - not syncing: Oops: Fatal exception in interrupt ]---
>
> I'm missing something? Let me know.
> Thanks in advance.
I had a similar issue on Rockchip 3399 [1], maybe it is related to your case?
[1] https://lore.kernel.org/linux-phy/6779635c-a162-0b7e-d124-d88d1ed9e162@xxxxxxxxxxxx/
>
> Regards,
> Tommaso
--
Best regards,
Mikhail Rudenko
