regardless of DIR() on the formal I2C hardware implementation)
during DIR() is set to INPUT. Some MD drivers might assume it.
tl(4) still works with this change.
- don't set DIR(INPUT) in i2c_wait_for_scl() because it could cause
unexpected stop condition in SCL=H, SDL=L and DIR(OUTPUT) case,
and DIR() should be used only to switch SDA direction, not SCL
that is always output on the master device
(I'm not sure if reading SCL on the master is defined in the I2C spec)
- set SDA right after SCL H->L edge on Tx, fetch SDA at SCL L->H edge on Rx,
and make sure not to change SDA during SCL=H except start/stop conditions
so that we don't have to rely on data setup time which might be critical
- don't set DIR(OUTPUT) during SDA bit read in i2c_bitbang_read_byte()
- explicitly specify both SDA and SCL bits in SETBITS() for readability
- sprinkle comments
Fixes "tl0: error reading Ethernet address" problem on tl(4).
http://mail-index.netbsd.org/tech-kern/2007/11/09/0001.html
sysmon_envsys_create() and sysmon_envsys_destroy() were added to
create/destroy sysmon_envsys objects (and its TAILQ/LIST for sensors/events).
sysmon_envsys_sensor_attach() and sysmon_envsys_sensor_detach() were
added to attach/detach sensors to a specified sysmon_envsys device.
The events framework is now per device and configurable via the
ENVSYS_SETDICTIONARY ioctl or /etc/envsys.conf and envstat(8).
Update all users and documentation to reflect these changes.
MHz value as suggested by Alan Barret (apb@).
While I'm here make it report the correct type, it should be PC2 not PC
for DDR2.
spdmem0 at iic0 addr 0x50
spdmem0: DDR2 SDRAM memory, no parity or ECC, 1024MB, 800MHz, PC2-6400
spdmem0: 14 rows, 10 cols, 2 ranks, 4 banks/chip, 2.50ns cycle time
spdmem0: voltage SSTL 1.8V, refresh time 7.8us (self-refreshing)
spdmem1 at iic0 addr 0x51
spdmem1: DDR2 SDRAM memory, no parity or ECC, 1024MB, 667MHz, PC2-5300
spdmem1: 14 rows, 10 cols, 2 ranks, 4 banks/chip, 3.00ns cycle time
spdmem1: voltage SSTL 1.8V, refresh time 7.8us (self-refreshing)
This does NOT identify the devices, merely indicates the
presence of devices at certain addresses. Tested on ichsmb
and nfsmb - other SMBus devices will need to ensure the
proper bus type is set. (I2C_TYPE_SMBUS)
From Nicolas Joly, via Paul Goyette, in PR#36744.
the eeprom on common types of memory modules. The specifications are
displayed during boot and can later be queried in the hw.spdmemN sysctl
subtree. Stub driver written by Nicolas Joly and greatly improved upon by
Paul Goyette. From PR 36745, with additional improvements by Paul and me.
