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Date: Tue, 22 Oct 2019 10:42:29 +0300
From: Peter Ujfalusi <peter.ujfalusi@...com>
To: Sekhar Nori <nsekhar@...com>, <bgolaszewski@...libre.com>
CC: <linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] ARM: davinci: dm365-evm: Add Fixed regulators needed for
tlv320aic3101
On 21/10/2019 13.40, Peter Ujfalusi wrote:
>
>
> On 17/10/2019 16.49, Sekhar Nori wrote:
>> On 17/10/19 4:39 PM, Sekhar Nori wrote:
>>> On 30/08/19 3:52 PM, Peter Ujfalusi wrote:
>>>> The codec driver needs correct regulators in order to probe.
>>>> Both VCC_3V3 and VCC_1V8 is always on fixed regulators on the board.
>>>>
>>>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
>>>
>>> Applied for v5.4
>>
>> This is breaking boot on DM365 EVM.
>>
>> Booting Linux on physical CPU 0x0
>> Linux version 5.4.0-rc1-00001-g927d10a85791-dirty (a0875516@...linux063) (gcc v9
>> CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=0005317f
>> CPU: VIVT data cache, VIVT instruction cache
>> Machine: DaVinci DM365 EVM
>> Memory policy: Data cache writethrough
>> cma: Reserved 16 MiB at 0x86c00000
>> DaVinci dm365_rev1.1 variant 0x0
>> On node 0 totalpages: 32768
>> DMA zone: 256 pages used for memmap
>> DMA zone: 0 pages reserved
>> DMA zone: 32768 pages, LIFO batch:7
>> pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
>> pcpu-alloc: [0] 0
>> Built 1 zonelists, mobility grouping on. Total pages: 32512
>> Kernel command line: console=ttyS0,115200n8 root=/dev/nfs rw nfsroot=172.24.210p
>> Dentry cache hash table entries: 16384 (order: 4, 65536 bytes, linear)
>> Inode-cache hash table entries: 8192 (order: 3, 32768 bytes, linear)
>> mem auto-init: stack:off, heap alloc:off, heap free:off
>> Memory: 106776K/131072K available (4760K kernel code, 253K rwdata, 1160K rodata)
>> SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
>> rcu: Preemptible hierarchical RCU implementation.
>> Tasks RCU enabled.
>> rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
>> NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
>> random: get_random_bytes called from start_kernel+0x25c/0x440 with crng_init=0
>> clocksource: timer0_1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79s
>> sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns
>> Console: colour dummy device 80x30
>> Calibrating delay loop... 146.84 BogoMIPS (lpj=734208)
>> pid_max: default: 32768 minimum: 301
>> Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
>> Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
>> CPU: Testing write buffer coherency: ok
>> Setting up static identity map for 0x80008400 - 0x80008458
>> rcu: Hierarchical SRCU implementation.
>> devtmpfs: initialized
>> clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 191s
>> futex hash table entries: 256 (order: -1, 3072 bytes, linear)
>> pinctrl core: initialized pinctrl subsystem
>> NET: Registered protocol family 16
>> DMA: preallocated 256 KiB pool for atomic coherent allocations
>> mux: initialized INT_EDMA_CC
>> mux: Setting register INT_EDMA_CC
>> mux: INTMUX (0x00000018) = 0x00000000 -> 0x00000004
>> cpuidle: using governor menu
>> mux: initialized INT_EMAC_RXTHRESH
>> mux: Setting register INT_EMAC_RXTHRESH
>> mux: INTMUX (0x00000018) = 0x00000004 -> 0x00004004
>> mux: initialized INT_EMAC_RXPULSE
>> mux: Setting register INT_EMAC_RXPULSE
>> mux: INTMUX (0x00000018) = 0x00004004 -> 0x0000c004
>> mux: initialized INT_EMAC_TXPULSE
>> mux: Setting register INT_EMAC_TXPULSE
>> mux: INTMUX (0x00000018) = 0x0000c004 -> 0x0001c004
>> mux: initialized INT_EMAC_MISCPULSE
>> mux: Setting register INT_EMAC_MISCPULSE
>> mux: INTMUX (0x00000018) = 0x0001c004 -> 0x0003c004
>> EVM: tvp5146 SD video input
>> mux: initialized INT_PRTCSS
>> mux: Setting register INT_PRTCSS
>> mux: INTMUX (0x00000018) = 0x0003c004 -> 0x0003c404
>> mux: initialized SPI0_SCLK
>> mux: Setting register SPI0_SCLK
>> mux: PINMUX3 (0x0000000c) = 0x015affff -> 0x115affff
>> mux: initialized SPI0_SDI
>> mux: Setting register SPI0_SDI
>> mux: PINMUX3 (0x0000000c) = 0x115affff -> 0x155affff
>> mux: initialized SPI0_SDO
>> mux: Setting register SPI0_SDO
>> mux: PINMUX3 (0x0000000c) = 0x155affff -> 0x175affff
>> mux: initialized SPI0_SDENA0
>> mux: Setting register SPI0_SDENA0
>> mux: PINMUX3 (0x0000000c) = 0x175affff -> 0x375affff
>> edma edma.0: Legacy memcpy is enabled, things might not work
>> edma edma.0: TI EDMA DMA engine driver
>> 8<--- cut here ---
>> Unable to handle kernel NULL pointer dereference at virtual address 000000c0
>> pgd = (ptrval)
>> [000000c0] *pgd=00000000
>> Internal error: Oops: 5 [#1] PREEMPT ARM
>> Modules linked in:
>> CPU: 0 PID: 1 Comm: swapper Not tainted 5.4.0-rc1-00001-g927d10a85791-dirty #146
>> Hardware name: DaVinci DM365 EVM
>> PC is at reg_fixed_voltage_probe+0x30/0x2ec
>> LR is at reg_fixed_voltage_probe+0x2c/0x2ec
>> pc : [<c02a9628>] lr : [<c02a9624>] psr: 60000053
>> sp : c6837de0 ip : 00000000 fp : c062cfd8
>> r10: c05f44a8 r9 : 00000000 r8 : c68a24d0
>> r7 : c0631008 r6 : c68a24e0 r5 : 00000000 r4 : c68a24e0
>> r3 : 00000000 r2 : c065a854 r1 : 00000000 r0 : 00000000
>> Flags: nZCv IRQs on FIQs off Mode SVC_32 ISA ARM Segment none
>> Control: 0005317f Table: 80004000 DAC: 00000053
>> Process swapper (pid: 1, stack limit = 0x(ptrval))
>> Stack: (0xc6837de0 to 0xc6838000)
>> 7de0: c689be40 c0167044 00000000 c68f4720 c68f4660 c68f4660 c68f4720 c689be40
>> 7e00: c0575ca4 64d9cb0d 00000000 c68a24e0 00000000 c065a854 c065a854 00000000
>> 7e20: 00000000 c05f44a8 c062cfd8 c02e0a64 c68a24e0 c0688d00 00000000 c02dec54
>> 7e40: c68a24e0 c065a854 c065a854 c0631008 ffffe000 c061e828 c05f44a8 c02def44
>> 7e60: 00000000 ffffff08 ffff0a00 c68a24e0 00000000 c065a854 c0631008 ffffe000
>> 7e80: c061e828 c05f44a8 c062cfd8 c02df1f8 00000000 c065a854 c68a24e0 c02df258
>> 7ea0: c68337b0 c065a854 c02df200 c02dced4 c061e828 c681db90 c68337b0 64d9cb0d
>> 7ec0: c062cfd8 c065a854 c682af00 c065ea48 00000000 c02de070 c054f984 c0494cc0
>> 7ee0: c065a854 c065a854 c0631008 c060b098 00000000 c02dfb04 c066d5c0 c0631008
>> 7f00: c060b098 c000a624 0000007f c7fffea8 c05d00c4 00000000 c7fffee9 c00372e0
>> 7f20: c05cf6d8 c0549714 00000000 00000004 00000004 00000000 00000000 c7fffee2
>> 7f40: c7fffee5 64d9cb0d 00000000 0000007f c061e844 64d9cb0d 0000007f c061e848
>> 7f60: 00000005 c066d5c0 c066d5c0 c05f4e6c 00000004 00000004 00000000 c05f44a8
>> 7f80: 00000000 00000000 c04a71bc 00000000 00000000 00000000 00000000 00000000
>> 7fa0: 00000000 c04a71c4 00000000 c00090e0 00000000 00000000 00000000 00000000
>> 7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>> 7fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
>> [<c02a9628>] (reg_fixed_voltage_probe) from [<c02e0a64>] (platform_drv_probe+0x)
>> [<c02e0a64>] (platform_drv_probe) from [<c02dec54>] (really_probe+0x1e0/0x34c)
>> [<c02dec54>] (really_probe) from [<c02def44>] (driver_probe_device+0x5c/0x168)
>> [<c02def44>] (driver_probe_device) from [<c02df1f8>] (device_driver_attach+0x58)
>> [<c02df1f8>] (device_driver_attach) from [<c02df258>] (__driver_attach+0x58/0xc)
>> [<c02df258>] (__driver_attach) from [<c02dced4>] (bus_for_each_dev+0x70/0xb4)
>> [<c02dced4>] (bus_for_each_dev) from [<c02de070>] (bus_add_driver+0x194/0x1cc)
>> [<c02de070>] (bus_add_driver) from [<c02dfb04>] (driver_register+0x74/0x108)
>> [<c02dfb04>] (driver_register) from [<c000a624>] (do_one_initcall+0x6c/0x1d8)
>> [<c000a624>] (do_one_initcall) from [<c05f4e6c>] (kernel_init_freeable+0x10c/0x)
>> [<c05f4e6c>] (kernel_init_freeable) from [<c04a71c4>] (kernel_init+0x8/0xec)
>> [<c04a71c4>] (kernel_init) from [<c00090e0>] (ret_from_fork+0x14/0x34)
>> Exception stack(0xc6837fb0 to 0xc6837ff8)
>> 7fa0: 00000000 00000000 00000000 00000000
>> 7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>> 7fe0: 00000000 00000000 00000000 00000000 00000013 00000000
>> Code: e5920018 e58d3024 eb02b71e e3a03000 (e59090c0)
>> ---[ end trace 90e87368a248f7f6 ]---
>> Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
>
> Interesting.
> Something has changed in regulators core which causes crash when not
> booted with DT?
>
> It did worked when I have sent the patches. I'll take a look what might
> be the issue.
can this be the fix: https://lkml.org/lkml/2019/9/21/199 ?
>
> Same for the dma644x
>
> - Péter
>
> Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
> Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
- Péter
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
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