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authorKarthikeyan Ramasubramanian <kramasub@google.com>2020-09-03 11:54:23 -0600
committerPatrick Georgi <pgeorgi@google.com>2020-09-08 05:32:14 +0000
commit9526c5dedaa6d4dac82dca1eb2def236f169b037 (patch)
treec5a7bc2fa7784f857c117ca84005c805d46eb7d8
parentdc87025ce41f24c8c3337176c3e38f230e7a0aa9 (diff)
mb/google/dedede/var/waddledee: Configure I2C high and low time
Configure the I2C bus high and low time for all enabled I2C buses. BUG=b:163743035 TEST=Measured the I2C bus frequency as 384 KHz, high time as 924 ns and low time as 1680 ns. Change-Id: I60a5f6814fb9818c724f6b6fe465ea49d0de0f97 Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45083 Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
-rw-r--r--src/mainboard/google/dedede/variants/waddledee/overridetree.cb18
1 files changed, 18 insertions, 0 deletions
diff --git a/src/mainboard/google/dedede/variants/waddledee/overridetree.cb b/src/mainboard/google/dedede/variants/waddledee/overridetree.cb
index a538ecc24a..a525a0f2c5 100644
--- a/src/mainboard/google/dedede/variants/waddledee/overridetree.cb
+++ b/src/mainboard/google/dedede/variants/waddledee/overridetree.cb
@@ -21,18 +21,36 @@ chip soc/intel/jasperlake
},
.i2c[0] = {
.speed = I2C_SPEED_FAST,
+ .speed_config[0] = {
+ .speed = I2C_SPEED_FAST,
+ .scl_lcnt = 190,
+ .scl_hcnt = 100,
+ .sda_hold = 40,
+ }
},
.i2c[1] = {
.speed = I2C_SPEED_FAST,
},
.i2c[2] = {
.speed = I2C_SPEED_FAST,
+ .speed_config[0] = {
+ .speed = I2C_SPEED_FAST,
+ .scl_lcnt = 190,
+ .scl_hcnt = 100,
+ .sda_hold = 40,
+ }
},
.i2c[3] = {
.speed = I2C_SPEED_FAST,
},
.i2c[4] = {
.speed = I2C_SPEED_FAST,
+ .speed_config[0] = {
+ .speed = I2C_SPEED_FAST,
+ .scl_lcnt = 190,
+ .scl_hcnt = 100,
+ .sda_hold = 40,
+ }
},
}"