[coreboot-gerrit] Change in coreboot[master]: mb/google/volteer/variant/volteer: Turn I2C0 bus freq closer to 400 k...

[Johnny Li (Code Review)]

Johnny Li has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/43747 )

Change subject: mb/google/volteer/variant/volteer: Turn I2C0 bus freq closer to 400 kHz for Audio
......................................................................

mb/google/volteer/variant/volteer: Turn I2C0 bus freq closer to 400 kHz
for Audio

The current I2C0 bus frequency is 366 kHZ, which does not meet the spec.
This change updates scl_lcnt, scl_hcnt, sda_hold value for I2C0 to bring
the bus frequency closer to 400kHz.

BUG=b:153588771
TEST=Verified that I2C0 frequency is 395kHz.
Signed-off-by: Johnny Li 
Change-Id: I7064fe38ad7b94d6a4188a322642f18717c2a327
---
M src/mainboard/google/volteer/variants/volteer/overridetree.cb
1 file changed, 3 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/47/43747/1

diff --git a/src/mainboard/google/volteer/variants/volteer/overridetree.cb b/src/mainboard/google/volteer/variants/volteer/overridetree.cb
index d84ca1d..bbfddef 100644
--- a/src/mainboard/google/volteer/variants/volteer/overridetree.cb
+++ b/src/mainboard/google/volteer/variants/volteer/overridetree.cb
@@ -23,6 +23,9 @@
    	},
                 .i2c[0] = {
    		.speed = I2C_SPEED_FAST,
+                        .scl_lcnt = 155,
+                        .scl_hcnt = 75,
+                        .sda_hold = 36,
    	},
    	.i2c[1] = {
    		.speed = I2C_SPEED_FAST,