Re: Overhaul of I2C and SPI device autoconfiguration

[Tobias Nygren <tnn%NetBSD.org@localhost>]

On Sun, 12 Sep 2021 12:30:14 -0700
Jason Thorpe <thorpej%me.com@localhost> wrote:

> Ok, sparc64 should be good do go now.  I made a bunch of fake fixup entries for the Qemu machine and, after a couple of additional fixes, verified that the machinery is working as expected.

Gets further but hits another problem.
bus mutex uninitialized or points at wrong data?

iic0 at pcfiic0: I2C bus
cpu0: data fault: pc=105f440 rpc=143e594 addr=1afc000
kernel trap 6c: +fast data access protection
Stopped in pid 0.0 (system) at  netbsd:_lock_cas:       casxa           0x80, %o1, %o2
db{0}> bt
iic_acquire_bus(1afd088, 8, 2003dac, 1af0400, 1afd098, 10) at netbsd:iic_acquire_bus+0x94
spdmem_i2c_match(1075dfa80, 1c66f00, 2004710, 1aecc00, 73, 1c60b98) at netbsd:spdmem_i2c_match+0xa4
config_match(1075dfa80, 1c66f00, 2004710, 2004710, 20, 0) at netbsd:config_match+0x38
[rest of trace omitted]