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From: Greg Ungerer <gerg@kernel.org>
To: Michael Nazzareno Trimarchi <michael@amarulasolutions.com>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Boris Brezillon <boris.brezillon@collabora.com>,
	linux-mtd@lists.infradead.org,
	Boris Brezillon <bbrezillon@kernel.org>
Subject: Re: GPMI iMX6ull timeout on DMA
Date: Fri, 29 Jan 2021 22:43:06 +1000
Message-ID: <2e9e1f1c-ee57-425d-1791-70c66de52637@kernel.org> (raw)
In-Reply-To: <CAOf5uwmPzCU8WFRQ1tQBdN7OVGZZ9SvdAG0YqVAyxmA1zwtUhg@mail.gmail.com>

Hi Michael,

On 28/1/21 7:45 pm, Michael Nazzareno Trimarchi wrote:
> Hi Greg
> 
> On Tue, Aug 13, 2019 at 2:50 AM Greg Ungerer <gerg@kernel.org> wrote:
>>
>> Hi Boris,
>>
>> On 12/8/19 5:31 pm, Boris Brezillon wrote:
>>> On Mon, 12 Aug 2019 12:50:36 +1000
>> [snip]
>>> Hm, CTRL1 is identical. Can you dump all regs at the beginning and at
>>> the end of those funcs?
>>
>> Here is a more complete dump of registers. Trace points are at
>> entry and exit of the respective functions in the different
>> kernel versions. Register dumping code is identical for both.
>>
>>
>> Linux version 4.16.0 (gerg@goober) (gcc version 4.8.3 (GCC)) #10 Tue Aug 13 10:24:28 AEST 2019
>> ...
> 
> I ran an overnight reboot process on linux-4.19.y tag: v4.19.169 and
> I'm not able to reproduce up to now.
> 
> Do you have an update from your side?

I haven't seen the problem for a while now.
I pretty much only run modern kernels, I am currently using 5.10.
So I am guessing it was resolved somewhere at some point, but I
don't know exactly what change resolved it.

Regards
Greg



>> drivers/mtd/nand/gpmi-nand/gpmi-lib.c(1073): gpmi_begin(): ENTRY
>>     HW_GPMI_CTRL0=0x00000000
>>     HW_GPMI_CTRL1=0x01c4000c
>>     HW_GPMI_COMPARE=0x00000000
>>     HW_GPMI_ECCCTRL=0x00000400
>>     HW_GPMI_ECCCOUNT=0x00000000
>>     HW_GPMI_PAYLOAD=0x00000000
>>     HW_GPMI_AUXILIARY=0x00000000
>>     HW_GPMI_TIMING0=0x00010203
>>     HW_GPMI_TIMING1=0x00000000
>>     HW_GPMI_TIMING2=0x23023336
>>     HW_GPMI_DATA=0x00000000
>>     HW_GPMI_STAT=0xff000005
>>     HW_GPMI_DEBUG=0x00000000
>>     r->clock[0]=22000000
>> nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xda
>> nand: Micron MT29F2G08ABAEAWP
>> nand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
>> gpmi-nand 1806000.gpmi-nand: enable the asynchronous EDO mode 5
>> drivers/mtd/nand/gpmi-nand/gpmi-lib.c(1073): gpmi_begin(): ENTRY
>>     HW_GPMI_CTRL0=0x01800001
>>     HW_GPMI_CTRL1=0x0104000c
>>     HW_GPMI_COMPARE=0x00000000
>>     HW_GPMI_ECCCTRL=0x00000000
>>     HW_GPMI_ECCCOUNT=0x00000000
>>     HW_GPMI_PAYLOAD=0x00000000
>>     HW_GPMI_AUXILIARY=0x00000000
>>     HW_GPMI_TIMING0=0x00010203
>>     HW_GPMI_TIMING1=0x05000000
>>     HW_GPMI_TIMING2=0x23023336
>>     HW_GPMI_DATA=0x00000000
>>     HW_GPMI_STAT=0xff000005
>>     HW_GPMI_DEBUG=0x00000101
>>     r->clock[0]=99000000
>> drivers/mtd/nand/gpmi-nand/gpmi-lib.c(1136): gpmi_begin(): EXIT
>>     HW_GPMI_CTRL0=0x01800001
>>     HW_GPMI_CTRL1=0x01c6800c
>>     HW_GPMI_COMPARE=0x00000000
>>     HW_GPMI_ECCCTRL=0x00000000
>>     HW_GPMI_ECCCOUNT=0x00000000
>>     HW_GPMI_PAYLOAD=0x00000000
>>     HW_GPMI_AUXILIARY=0x00000000
>>     HW_GPMI_TIMING0=0x00010101
>>     HW_GPMI_TIMING1=0x90000000
>>     HW_GPMI_TIMING2=0x23023336
>>     HW_GPMI_DATA=0x00000000
>>     HW_GPMI_STAT=0xff000005
>>     HW_GPMI_DEBUG=0x00000101
>>     r->clock[0]=99000000
>> Scanning device for bad blocks
>> 5 ofpart partitions found on MTD device gpmi-nand
>> Creating 5 MTD partitions on "gpmi-nand":
>> 0x000000000000-0x000000500000 : "u-boot"
>> 0x000000500000-0x000000600000 : "u-boot-env"
>> 0x000000600000-0x000000800000 : "log"
>> 0x000000800000-0x000010000000 : "flash"
>> 0x000000000000-0x000010000000 : "all"
>> gpmi-nand 1806000.gpmi-nand: driver registered.
>> ...
>>
>> Note that the first ENTRY dump has no matching EXIT dump. From the
>> code I assume it is returning from gpmi_begin() at the
>> "if (!hw.sample_delay_factor)" check.
>>
>>
>> And for the 5.1.14 kernel:
>>
>> Linux version 5.1.14 (gerg@goober) (gcc version 4.8.3 (GCC)) #27 Tue Aug 13 10:20:32 AEST 2019
>> ...
>> drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c(512): gpmi_nfc_apply_timings(): ENTRY
>>     HW_GPMI_CTRL0=0x00000000
>>     HW_GPMI_CTRL1=0x01c4000c
>>     HW_GPMI_COMPARE=0x00000000
>>     HW_GPMI_ECCCTRL=0x00000400
>>     HW_GPMI_ECCCOUNT=0x00000000
>>     HW_GPMI_PAYLOAD=0x00000000
>>     HW_GPMI_AUXILIARY=0x00000000
>>     HW_GPMI_TIMING0=0x00010203
>>     HW_GPMI_TIMING1=0x00000000
>>     HW_GPMI_TIMING2=0x23023336
>>     HW_GPMI_DATA=0x00000000
>>     HW_GPMI_STAT=0xff000005
>>     HW_GPMI_DEBUG=0x00000000
>>     r->clock[0]=22000000
>> drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c(536): gpmi_nfc_apply_timings(): EXIT
>>     HW_GPMI_CTRL0=0x00000000
>>     HW_GPMI_CTRL1=0x0104000c
>>     HW_GPMI_COMPARE=0x00000000
>>     HW_GPMI_ECCCTRL=0x00000400
>>     HW_GPMI_ECCCOUNT=0x00000000
>>     HW_GPMI_PAYLOAD=0x00000000
>>     HW_GPMI_AUXILIARY=0x00000000
>>     HW_GPMI_TIMING0=0x00020101
>>     HW_GPMI_TIMING1=0x60000000
>>     HW_GPMI_TIMING2=0x23023336
>>     HW_GPMI_DATA=0x00000000
>>     HW_GPMI_STAT=0xff000005
>>     HW_GPMI_DEBUG=0x00000000
>>     r->clock[0]=22000000
>> random: fast init done
>> nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xda
>> nand: Micron MT29F2G08ABAEAWP
>> nand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
>> drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c(512): gpmi_nfc_apply_timings(): ENTRY
>>     HW_GPMI_CTRL0=0x01800001
>>     HW_GPMI_CTRL1=0x0104000c
>>     HW_GPMI_COMPARE=0x00000000
>>     HW_GPMI_ECCCTRL=0x00000000
>>     HW_GPMI_ECCCOUNT=0x00000000
>>     HW_GPMI_PAYLOAD=0x00000000
>>     HW_GPMI_AUXILIARY=0x00000000
>>     HW_GPMI_TIMING0=0x00020101
>>     HW_GPMI_TIMING1=0x60000000
>>     HW_GPMI_TIMING2=0x23023336
>>     HW_GPMI_DATA=0x0000003f
>>     HW_GPMI_STAT=0xff000005
>>     HW_GPMI_DEBUG=0x00000101
>>     r->clock[0]=22000000
>> drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c(536): gpmi_nfc_apply_timings(): EXIT
>>     HW_GPMI_CTRL0=0x01800001
>>     HW_GPMI_CTRL1=0x0104000c
>>     HW_GPMI_COMPARE=0x00000000
>>     HW_GPMI_ECCCTRL=0x00000000
>>     HW_GPMI_ECCCOUNT=0x00000000
>>     HW_GPMI_PAYLOAD=0x00000000
>>     HW_GPMI_AUXILIARY=0x00000000
>>     HW_GPMI_TIMING0=0x00020101
>>     HW_GPMI_TIMING1=0xb0000000
>>     HW_GPMI_TIMING2=0x23023336
>>     HW_GPMI_DATA=0x0000003f
>>     HW_GPMI_STAT=0xff000005
>>     HW_GPMI_DEBUG=0x00000101
>>     r->clock[0]=22000000
>> drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c(512): gpmi_nfc_apply_timings(): ENTRY
>>     HW_GPMI_CTRL0=0x01800001
>>     HW_GPMI_CTRL1=0x0104000c
>>     HW_GPMI_COMPARE=0x00000000
>>     HW_GPMI_ECCCTRL=0x00000000
>>     HW_GPMI_ECCCOUNT=0x00000000
>>     HW_GPMI_PAYLOAD=0x00000000
>>     HW_GPMI_AUXILIARY=0x00000000
>>     HW_GPMI_TIMING0=0x00020101
>>     HW_GPMI_TIMING1=0xb0000000
>>     HW_GPMI_TIMING2=0x23023336
>>     HW_GPMI_DATA=0x000000e0
>>     HW_GPMI_STAT=0xff000005
>>     HW_GPMI_DEBUG=0x00000000
>>     r->clock[0]=22000000
>> drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c(536): gpmi_nfc_apply_timings(): EXIT
>>     HW_GPMI_CTRL0=0x01800001
>>     HW_GPMI_CTRL1=0x01c6800c
>>     HW_GPMI_COMPARE=0x00000000
>>     HW_GPMI_ECCCTRL=0x00000000
>>     HW_GPMI_ECCCOUNT=0x00000000
>>     HW_GPMI_PAYLOAD=0x00000000
>>     HW_GPMI_AUXILIARY=0x00000000
>>     HW_GPMI_TIMING0=0x00010101
>>     HW_GPMI_TIMING1=0xe0000000
>>     HW_GPMI_TIMING2=0x23023336
>>     HW_GPMI_DATA=0x000000e0
>>     HW_GPMI_STAT=0xff000005
>>     HW_GPMI_DEBUG=0x00000000
>>     r->clock[0]=99000000
>> Scanning device for bad blocks
>> 5 fixed-partitions partitions found on MTD device gpmi-nand
>> Creating 5 MTD partitions on "gpmi-nand":
>> 0x000000000000-0x000000500000 : "u-boot"
>> 0x000000500000-0x000000600000 : "u-boot-env"
>> 0x000000600000-0x000000800000 : "log"
>> 0x000000800000-0x000010000000 : "flash"
>> 0x000000000000-0x000010000000 : "all"
>> gpmi-nand 1806000.gpmi-nand: driver registered.
>> ...
>>
>>
>> Regards
>> Greg
>>
>>
> 
> 

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  parent reply index

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-29  6:41 Greg Ungerer
2019-07-29  8:36 ` Miquel Raynal
2019-07-29  8:42   ` Michael Nazzareno Trimarchi
2019-07-29 12:18     ` Greg Ungerer
2019-07-29 12:20       ` Michael Nazzareno Trimarchi
2019-07-29 12:33   ` Greg Ungerer
2019-07-29 12:47     ` Miquel Raynal
2019-07-29 12:49       ` Michael Nazzareno Trimarchi
2019-07-29 12:55         ` Miquel Raynal
2019-07-29 13:00           ` Michael Nazzareno Trimarchi
2019-07-29 13:22             ` Miquel Raynal
2019-07-29 20:00               ` Michael Nazzareno Trimarchi
2019-07-29 21:02                 ` Miquel Raynal
2019-07-30  0:28       ` Greg Ungerer
2019-07-30  0:41         ` Greg Ungerer
2019-07-30  6:06           ` Greg Ungerer
2019-07-30  8:38             ` Miquel Raynal
2019-07-30  8:58               ` Boris Brezillon
2019-07-31  2:05               ` Greg Ungerer
2019-07-31  6:28                 ` Boris Brezillon
2019-08-02  7:19                   ` Greg Ungerer
2019-08-02 12:34                   ` Greg Ungerer
2019-08-02 12:51                     ` Boris Brezillon
2019-08-05  5:51                       ` Greg Ungerer
2019-08-07 16:05                         ` Miquel Raynal
2019-08-08  0:43                           ` Greg Ungerer
2019-08-08 16:36                         ` Boris Brezillon
2019-08-09  5:20                           ` Greg Ungerer
2019-08-09  6:23                             ` Boris Brezillon
2019-08-09  6:55                               ` Greg Ungerer
2019-08-09  7:32                                 ` Boris Brezillon
2019-08-09 13:57                                   ` Greg Ungerer
2019-08-09 13:59                                     ` Boris Brezillon
2019-08-12  2:50                                       ` Greg Ungerer
2019-08-12  4:04                                         ` Greg Ungerer
2019-08-12  7:31                                         ` Boris Brezillon
2019-08-13  0:50                                           ` Greg Ungerer
2021-01-28  9:45                                             ` Michael Nazzareno Trimarchi
2021-01-28 10:26                                               ` Miquel Raynal
2021-01-28 10:35                                                 ` Michael Nazzareno Trimarchi
2021-01-28 11:55                                                   ` Michael Nazzareno Trimarchi
2021-01-29 12:43                                               ` Greg Ungerer [this message]
2021-01-30  9:41                                                 ` Michael Nazzareno Trimarchi
2021-02-01 14:13                                                   ` Miquel Raynal
2021-02-01 14:32                                                     ` Michael Nazzareno Trimarchi
2021-02-01 15:08                                                       ` Michael Nazzareno Trimarchi
2021-02-01 15:14                                                         ` Miquel Raynal
2021-02-01 15:17                                                           ` Michael Nazzareno Trimarchi
  -- strict thread matches above, loose matches on Subject: below --
2018-10-02 13:22 GPMI IMX6ull timeout on dma Michael Nazzareno Trimarchi
2018-10-04 14:36 ` Michael Nazzareno Trimarchi

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