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mb/google/dedede/var/drawcia: Configure I2C high and low time 

Configure the I2C bus high and low time for all enabled I2C buses.

BUG=b:162232776
TEST=Measured the I2C bus frequency as 389 KHz, high time as 870 ns and
low time as 1580 ns.

Change-Id: I67d2725a7fc8d83e3fa8a56cfa86540c4e6f0971
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45084
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Karthikeyan Ramasubramanian 2020-09-03 12:02:27 -06:00 committed by Patrick Georgi
parent 9526c5deda
commit 4d761db7e8
1 changed files with 18 additions and 0 deletions
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18
src/mainboard/google/dedede/variants/drawcia/overridetree.cb
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@ -24,18 +24,36 @@ chip soc/intel/jasperlake
}, },
.i2c[0] = { .i2c[0] = {
.speed = I2C_SPEED_FAST, .speed = I2C_SPEED_FAST,
.speed_config[0] = {
.speed = I2C_SPEED_FAST,
.scl_lcnt = 190,
.scl_hcnt = 100,
.sda_hold = 40,
}
}, },
.i2c[1] = { .i2c[1] = {
.speed = I2C_SPEED_FAST, .speed = I2C_SPEED_FAST,
}, },
.i2c[2] = { .i2c[2] = {
.speed = I2C_SPEED_FAST, .speed = I2C_SPEED_FAST,
.speed_config[0] = {
.speed = I2C_SPEED_FAST,
.scl_lcnt = 190,
.scl_hcnt = 100,
.sda_hold = 40,
}
}, },
.i2c[3] = { .i2c[3] = {
.speed = I2C_SPEED_FAST, .speed = I2C_SPEED_FAST,
}, },
.i2c[4] = { .i2c[4] = {
.speed = I2C_SPEED_FAST, .speed = I2C_SPEED_FAST,
.speed_config[0] = {
.speed = I2C_SPEED_FAST,
.scl_lcnt = 190,
.scl_hcnt = 100,
.sda_hold = 40,
}
}, },
}" }"