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

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

BUG=b:168783630
TEST=Measured the I2C bus frequency reduce to 387 KHz.

Signed-off-by: Stanley Wu <stanley1.wu@lcfc.corp-partner.google.com>
Change-Id: I37403dd3ac3c9320398207d2111e1ddb73d6a130
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48878
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marco Chen <marcochen@google.com>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
This commit is contained in:
Stanley Wu 2020-12-23 20:26:57 +08:00 committed by Patrick Georgi
parent 50dc0633db
commit 2f8df88ced
1 changed files with 18 additions and 0 deletions
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18
src/mainboard/google/dedede/variants/boten/overridetree.cb
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@ -21,15 +21,33 @@ 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[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,
}
}, },
.i2c[5] = { .i2c[5] = {
.speed = I2C_SPEED_FAST, .speed = I2C_SPEED_FAST,