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mb/google/rex/var/rex0: Configure I2C5 timing 

Configure I2C5 timing in devicetree to ensure I2C devices
meet timing requirement.

BUG=b:300177424
TEST=Build and check I2C devices timing meet spec.

|             | I2C5-Before | I2C5-After |
|-------------|-------------|------------|
| FSMB(KHz)   | 445.400     |   343.638  |
| TLOW(us)    | 1.543       |   2.068    |
| THIGH(us)   | 0.475       |   0.604    |
| THD:STA(us) | 0.603       |   0.711    |
| TSU:STA(us) | 0.612       |   0.611    |
| TSU:STO(us) | 0.605       |   0.611    |
| TBUF(us)    | >1.914      |   >2.044   |

Change-Id: I3bb678b66d55c6bfaff76e3e5500a2a3bc3a2c61
Signed-off-by: Ivy Jian <ivy.jian@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78111
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Ivy Jian 2023-09-25 13:32:35 +08:00 committed by Felix Held
parent e608a4f4fd
commit 9bb02a8db1
1 changed files with 2 additions and 2 deletions
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4
src/mainboard/google/rex/variants/rex0/overridetree.cb
View File

@ -142,8 +142,8 @@ chip soc/intel/meteorlake
},
.i2c[5] = {
.speed = I2C_SPEED_FAST,
.rise_time_ns = 900,
.fall_time_ns = 400,
.rise_time_ns = 400,
.fall_time_ns = 280,
.data_hold_time_ns = 50,
},
}"