[S] Change in coreboot[master]: mb/google/nissa/var/xivu: Change TPM I2C freqeuncy to 1 MHz

[Ian Feng (Code Review)]

Ian Feng has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/68071 )

Change subject: mb/google/nissa/var/xivu: Change TPM I2C freqeuncy to 1 MHz
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mb/google/nissa/var/xivu: Change TPM I2C freqeuncy to 1 MHz

Change the TPM I2C freqeuncy to 1 MHz for xivu.

BUG=b:249953477
TEST=On xivu, all timing requirements in the spec are met.
Signed-off-by: Ian Feng 
Change-Id: I33f712c14978b95f3a4da82d6f1f5fbae1283b17
---
M src/mainboard/google/brya/variants/xivu/overridetree.cb
1 file changed, 27 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/71/68071/1

diff --git a/src/mainboard/google/brya/variants/xivu/overridetree.cb b/src/mainboard/google/brya/variants/xivu/overridetree.cb
index f919cef..03203b0 100644
--- a/src/mainboard/google/brya/variants/xivu/overridetree.cb
+++ b/src/mainboard/google/brya/variants/xivu/overridetree.cb
@@ -41,6 +41,19 @@
    #| I2C3              | Audio                     |
    #| I2C5              | Trackpad                  |
    #+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.i2c[0] = {
+			.early_init = 1,
+			.speed = I2C_SPEED_FAST_PLUS,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST_PLUS,
+				.scl_lcnt = 55,
+				.scl_hcnt = 30,
+				.sda_hold = 7,
+			}
+		},
+	}"
+
         device domain 0 on
         	device ref dtt on
    		chip drivers/intel/dptf