On 17/09/2021 13:28, Vaittinen, Matti wrote:
Hi deeee Ho Tony & All,
On 9/17/21 09:14, Tony Lindgren wrote:
Hi,
* Vaittinen, Matti <Matti.Vaittinen@xxxxxxxxxxxxxxxxx> [210916 09:15]:
My beaglebone black (rev c) based test environment fails to boot with
v5.15-rc1. Boot succeeds with the v5.14.
Bisecting the Linus' tree pointed out the commit:
[1c7ba565e70365763ea780666a3eee679344b962] ARM: dts: am335x-baltos:
switch to new cpsw switch drv
I don't see this exact commit touching the BBB device-tree. In Linus'
tree it is a part of a merge commit. Reverting the whole merge on top of
the v5.15-rc1
This reverts commit 81b6a285737700c2e04ef0893617b80481b6b4b7, reversing
changes made to f73979109bc11a0ed26b6deeb403fb5d05676ffc.
makes my beaglebone black to boot again.
Yesterday I tried adding this patch:
https://lore.kernel.org/linux-omap/20210915065032.45013-1-tony@xxxxxxxxxxx/T/#u
pointed by Tom on top of the v5.15-rc1 - no avail. I also did #define
DEBUG at ti-sys.c as was suggested by Tom - but I don't see any more output.
Correction, that was me, not Tom :)
Oh.. Sorry! I don't know where I picked Tom from... My bad!
For me, adding any kind of delay fixed the issue. Also adding some printk
statements fixed it for me.
Any suggestions what to check next?
Maybe try the attached patch? If it helps, just try with the with the
ti,sysc-delay-us = <2> added as few modules need that after enable.
It's also possible there is an issue with some other device that is now
getting enabled other than pruss. The last XXX printk output should show
the last device being probed.
Looks like you need to also enable CONFIG_SERIAL_EARLYCON=y, and pass
console=ttyS0,115200 debug earlycon in the kernel command line.
Ah. Thanks again. I indeed lacked the "debug earlycon" parameters. Now
we're more likely to see what went wrong :) I pasted the serial log form
failing boot with v5.15-rc1 which has both the patch you linked me above
and the patch you suggested me to test in previous email.
[...]
[ 2.786181] ti-sysc 48311fe0.target-module: XXX sysc_probe
[ 2.791994] ti-sysc 48311fe0.target-module:
48310000:2000:1fe0:1fe4:NA:00000020:rng
[ 2.800820] omap_rng 48310000.rng: Random Number Generator ver. 20
[ 2.807315] random: crng init done
[ 2.814207] ti-sysc 4a101200.target-module: XXX sysc_probe
[ 2.820080] ti-sysc 4a101200.target-module:
4a100000:8000:1200:1208:1204:4edb0100:cpgmac
This one cpsw
[ 2.830347] ti-sysc 4a326000.target-module: XXX sysc_probe
This one pruss and it still shows sysc_probe
Not sure what are the dependency here :( if any.
Additional option to try - cmdline param "initcall_debug" and maybe increase print level in really_probe_debug()
I see one possible diff if you could try:
diff --git a/arch/arm/boot/dts/am33xx-l4.dtsi b/arch/arm/boot/dts/am33xx-l4.dtsi
index c9629cb5ccd1..d62943ba3506 100644
--- a/arch/arm/boot/dts/am33xx-l4.dtsi
+++ b/arch/arm/boot/dts/am33xx-l4.dtsi
@@ -801,7 +801,7 @@
davinci_mdio_sw: mdio@1000 {
compatible = "ti,cpsw-mdio","ti,davinci_mdio";
- clocks = <&cpsw_125mhz_gclk>;
+ clocks = <&cpsw_125mhz_clkctrl AM3_CPSW_125MHZ_CPGMAC0_CLKCTRL 0>;
clock-names = "fck";
#address-cells = <1>;
#size-cells = <0>;
[ 2.836198] 8<--- cut here ---
[ 2.839339] Unhandled fault: external abort on non-linefetch (0x1008)
at 0xe0266000
[ 2.847215] pgd = 342d2420
[ 2.850000] [e0266000] *pgd=81ec1811, *pte=4a326653, *ppte=4a326453
[ 2.856467] Internal error: : 1008 [#1] THUMB2
[ 2.861036] Modules linked in:
[ 2.864176] CPU: 0 PID: 65 Comm: kworker/u2:2 Not tainted
5.15.0-rc1-00002-g5285574596c0 #552
[ 2.872946] Hardware name: Generic AM33XX (Flattened Device Tree)
[ 2.879212] Workqueue: events_unbound deferred_probe_work_func
[ 2.885231] PC is at sysc_probe+0xb30/0xf6c
[ 2.889545] LR is at omap_reset_deassert+0x8d/0x164
[ 2.894569] pc : [<c05afb40>] lr : [<c0605e2d>] psr: 40000033
[ 2.901009] sp : c1bcb798 ip : 05355555 fp : c0a56460
[ 2.906379] r10: 00000000 r9 : 00000001 r8 : 00000000
[ 2.911746] r7 : c110be4c r6 : c1f5ae10 r5 : c1f52240 r4 : c1105288
[ 2.918457] r3 : e0266000 r2 : 00000001 r1 : 00026000 r0 : 00000000
[ 2.925171] Flags: nZcv IRQs on FIQs on Mode SVC_32 ISA Thumb
Segment none
[ 2.932687] Control: 50c5387d Table: 80004019 DAC: 00000051
[ 2.938590] Register r0 information: NULL pointer
[ 2.943430] Register r1 information: non-paged memory
[ 2.948622] Register r2 information: non-paged memory
[ 2.953813] Register r3 information: 0-page vmalloc region starting
at 0xe0240000 allocated at __devm_ioremap+0x6f/0x78
[ 2.964915] Register r4 information: non-slab/vmalloc memory
[ 2.970734] Register r5 information: slab kmalloc-256 start c1f52200
pointer offset 64 size 256
[ 2.979701] Register r6 information: slab kmalloc-512 start c1f5ae00
pointer offset 16 size 512
[ 2.988661] Register r7 information: non-slab/vmalloc memory
[ 2.994481] Register r8 information: NULL pointer
[ 2.999316] Register r9 information: non-paged memory
[ 3.004508] Register r10 information: NULL pointer
[ 3.009433] Register r11 information: non-slab/vmalloc memory
[ 3.015343] Register r12 information: non-paged memory
[ 3.020625] Process kworker/u2:2 (pid: 65, stack limit = 0xa1c5a543)
[ 3.027159] Stack: (0xc1bcb798 to 0xc1bcc000)
[ 3.031637] b780:
???????? ????????
[ 3.040045] b7a0: ???????? ???????? ???????? ???????? ????????
???????? ???????? ????????
what is these ?? :(
[ 3.603378] [<c05afb40>] (sysc_probe) from [<c0695135>]
(platform_probe+0x5d/0x88)
[ 3.611178] [<c0695135>] (platform_probe) from [<c069334b>]
(really_probe+0x12b/0x2c8)
[ 3.619334] [<c069334b>] (really_probe) from [<c069356f>]
(__driver_probe_device+0x87/0x17c)
[ 3.628019] [<c069356f>] (__driver_probe_device) from [<c0693699>]
(driver_probe_device+0x35/0xa4)
[ 3.637244] [<c0693699>] (driver_probe_device) from [<c0693951>]
(__device_attach_driver+0x61/0xa8)
[ 3.646560] [<c0693951>] (__device_attach_driver) from [<c0691c7b>]
(bus_for_each_drv+0x47/0x70)
[ 3.655604] [<c0691c7b>] (bus_for_each_drv) from [<c06931b3>]
(__device_attach+0x8f/0xf0)
[ 3.664023] [<c06931b3>] (__device_attach) from [<c06926f3>]
(bus_probe_device+0x5b/0x60)
[ 3.672443] [<c06926f3>] (bus_probe_device) from [<c0690e19>]
(device_add+0x389/0x640)
[ 3.680597] [<c0690e19>] (device_add) from [<c08064b5>]
(of_platform_device_create_pdata+0x71/0xa0)
[ 3.689919] [<c08064b5>] (of_platform_device_create_pdata) from
[<c08065fd>] (of_platform_bus_create+0x10d/0x244)
[ 3.700484] [<c08065fd>] (of_platform_bus_create) from [<c0806879>]
(of_platform_populate+0x5d/0xd8)
[ 3.709886] [<c0806879>] (of_platform_populate) from [<c05add17>]
(simple_pm_bus_probe+0x2b/0x50)
[ 3.719020] [<c05add17>] (simple_pm_bus_probe) from [<c0695135>]
(platform_probe+0x5d/0x88)
[ 3.727617] [<c0695135>] (platform_probe) from [<c069334b>]
(really_probe+0x12b/0x2c8)
[ 3.735766] [<c069334b>] (really_probe) from [<c069356f>]
(__driver_probe_device+0x87/0x17c)
[ 3.744452] [<c069356f>] (__driver_probe_device) from [<c0693699>]
(driver_probe_device+0x35/0xa4)
[ 3.753677] [<c0693699>] (driver_probe_device) from [<c0693951>]
(__device_attach_driver+0x61/0xa8)
[ 3.762991] [<c0693951>] (__device_attach_driver) from [<c0691c7b>]
(bus_for_each_drv+0x47/0x70)
[ 3.772037] [<c0691c7b>] (bus_for_each_drv) from [<c06931b3>]
(__device_attach+0x8f/0xf0)
[ 3.780454] [<c06931b3>] (__device_attach) from [<c06926f3>]
(bus_probe_device+0x5b/0x60)
[ 3.788873] [<c06926f3>] (bus_probe_device) from [<c0690e19>]
(device_add+0x389/0x640)
[ 3.797023] [<c0690e19>] (device_add) from [<c08064b5>]
(of_platform_device_create_pdata+0x71/0xa0)
[ 3.806336] [<c08064b5>] (of_platform_device_create_pdata) from
[<c08065fd>] (of_platform_bus_create+0x10d/0x244)
[ 3.816899] [<c08065fd>] (of_platform_bus_create) from [<c0806879>]
(of_platform_populate+0x5d/0xd8)
[ 3.826302] [<c0806879>] (of_platform_populate) from [<c05add17>]
(simple_pm_bus_probe+0x2b/0x50)
[ 3.835434] [<c05add17>] (simple_pm_bus_probe) from [<c0695135>]
(platform_probe+0x5d/0x88)
[ 3.844030] [<c0695135>] (platform_probe) from [<c069334b>]
(really_probe+0x12b/0x2c8)
[ 3.852182] [<c069334b>] (really_probe) from [<c069356f>]
(__driver_probe_device+0x87/0x17c)
[ 3.860871] [<c069356f>] (__driver_probe_device) from [<c0693699>]
(driver_probe_device+0x35/0xa4)
[ 3.870095] [<c0693699>] (driver_probe_device) from [<c0693951>]
(__device_attach_driver+0x61/0xa8)
[ 3.879409] [<c0693951>] (__device_attach_driver) from [<c0691c7b>]
(bus_for_each_drv+0x47/0x70)
[ 3.888455] [<c0691c7b>] (bus_for_each_drv) from [<c06931b3>]
(__device_attach+0x8f/0xf0)
[ 3.896874] [<c06931b3>] (__device_attach) from [<c06926f3>]
(bus_probe_device+0x5b/0x60)
[ 3.905295] [<c06926f3>] (bus_probe_device) from [<c0690e19>]
(device_add+0x389/0x640)
[ 3.913443] [<c0690e19>] (device_add) from [<c08064b5>]
(of_platform_device_create_pdata+0x71/0xa0)
[ 3.922756] [<c08064b5>] (of_platform_device_create_pdata) from
[<c08065fd>] (of_platform_bus_create+0x10d/0x244)
[ 3.933320] [<c08065fd>] (of_platform_bus_create) from [<c0806879>]
(of_platform_populate+0x5d/0xd8)
[ 3.942722] [<c0806879>] (of_platform_populate) from [<c05add17>]
(simple_pm_bus_probe+0x2b/0x50)
[ 3.951857] [<c05add17>] (simple_pm_bus_probe) from [<c0695135>]
(platform_probe+0x5d/0x88)
[ 3.960452] [<c0695135>] (platform_probe) from [<c069334b>]
(really_probe+0x12b/0x2c8)
[ 3.968600] [<c069334b>] (really_probe) from [<c069356f>]
(__driver_probe_device+0x87/0x17c)
[ 3.977286] [<c069356f>] (__driver_probe_device) from [<c0693699>]
(driver_probe_device+0x35/0xa4)
[ 3.986512] [<c0693699>] (driver_probe_device) from [<c0693951>]
(__device_attach_driver+0x61/0xa8)
[ 3.995827] [<c0693951>] (__device_attach_driver) from [<c0691c7b>]
(bus_for_each_drv+0x47/0x70)
[ 4.004871] [<c0691c7b>] (bus_for_each_drv) from [<c06931b3>]
(__device_attach+0x8f/0xf0)
[ 4.013290] [<c06931b3>] (__device_attach) from [<c06926f3>]
(bus_probe_device+0x5b/0x60)
[ 4.021710] [<c06926f3>] (bus_probe_device) from [<c0692a9b>]
(deferred_probe_work_func+0x77/0xa4)
[ 4.030931] [<c0692a9b>] (deferred_probe_work_func) from [<c01343d5>]
(process_one_work+0x109/0x310)
[ 4.040336] [<c01343d5>] (process_one_work) from [<c0134921>]
(worker_thread+0xe5/0x3a8)
[ 4.048663] [<c0134921>] (worker_thread) from [<c01397a7>]
(kthread+0xe3/0x11c)
[ 4.056194] [<c01397a7>] (kthread) from [<c0100139>]
(ret_from_fork+0x11/0x38)
[ 4.063632] Exception stack(0xc1bcbfb0 to 0xc1bcbff8)
[ 4.068824] bfa0: ????????
???????? ???????? ????????
[ 4.077233] bfc0: ???????? ???????? ???????? ???????? ????????
???????? ???????? ????????
[ 4.085640] bfe0: ???????? ???????? ???????? ???????? ???????? ????????
[ 4.092446] Code: f100 81cc 696b 440b (6818) 46cc
[ 4.097375] ---[ end trace eba2b1d5f478df09 ]---
--
Best regards,
grygorii
