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authorSean Rhodes <sean@starlabs.systems>2024-08-12 10:19:34 +0100
committerSean Rhodes <sean@starlabs.systems>2024-10-11 11:27:08 +0000
commit4094ae369d1b6f62b4e608c583723353664e3b3d (patch)
tree73461264bf612f5476454aa067bdd4dddc128ab4 /src/mainboard/starlabs/starlite_adl
parent7f66fa4299ff5f64c94093a2a19b688dd5e80078 (diff)
mb/starlabs/starlite_adl: Make I2C speed configurable
Make the I2C speed user configurable from CMOS. Both the touchscreen and accelerometer support running at 100MHz or 400MHz. They perform better at 400MHz but use more power - this patch lets the user choose. Change-Id: Ia1b08d7ec6212418bb95d0a52077f01c930f8830 Signed-off-by: Sean Rhodes <sean@starlabs.systems> Reviewed-on: https://review.coreboot.org/c/coreboot/+/83882 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Maxim Polyakov <max.senia.poliak@gmail.com>
Diffstat (limited to 'src/mainboard/starlabs/starlite_adl')
-rw-r--r--src/mainboard/starlabs/starlite_adl/variants/mk_v/devicetree.cb9
-rw-r--r--src/mainboard/starlabs/starlite_adl/variants/mk_v/devtree.c6
2 files changed, 6 insertions, 9 deletions
diff --git a/src/mainboard/starlabs/starlite_adl/variants/mk_v/devicetree.cb b/src/mainboard/starlabs/starlite_adl/variants/mk_v/devicetree.cb
index fc21f18d74..c1af6475b4 100644
--- a/src/mainboard/starlabs/starlite_adl/variants/mk_v/devicetree.cb
+++ b/src/mainboard/starlabs/starlite_adl/variants/mk_v/devicetree.cb
@@ -1,13 +1,4 @@
chip soc/intel/alderlake
- register "common_soc_config" = "{
- .i2c[0] = {
- .speed = I2C_SPEED_FAST,
- },
- .i2c[2] = {
- .speed = I2C_SPEED_FAST,
- },
- }"
-
# FSP UPDs
register "cnvi_bt_audio_offload" = "true"
register "cnvi_bt_core" = "true"
diff --git a/src/mainboard/starlabs/starlite_adl/variants/mk_v/devtree.c b/src/mainboard/starlabs/starlite_adl/variants/mk_v/devtree.c
index 7184cdbc4c..331bc7f25b 100644
--- a/src/mainboard/starlabs/starlite_adl/variants/mk_v/devtree.c
+++ b/src/mainboard/starlabs/starlite_adl/variants/mk_v/devtree.c
@@ -63,4 +63,10 @@ void devtree_update(void)
/* Enable/Disable Accelerometer based on CMOS settings */
if (get_uint_option("accelerometer", 1) == 0)
accelerometer_dev->enabled = 0;
+
+ /* Set I2C devices speed to fast based on CMOS settings */
+ if (get_uint_option("i2c_speed_fast", 0) == 1) {
+ common_config->i2c[0].speed = I2C_SPEED_FAST;
+ common_config->i2c[2].speed = I2C_SPEED_FAST;
+ }
}