diff options
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/reef/variants/pyro/devicetree.cb | 41 |
1 files changed, 12 insertions, 29 deletions
diff --git a/src/mainboard/google/reef/variants/pyro/devicetree.cb b/src/mainboard/google/reef/variants/pyro/devicetree.cb index 4f17f98a76..b5e050ea4f 100644 --- a/src/mainboard/google/reef/variants/pyro/devicetree.cb +++ b/src/mainboard/google/reef/variants/pyro/devicetree.cb @@ -71,50 +71,33 @@ chip soc/intel/apollolake register "gpe0_dw2" = "PMC_GPE_N_63_32" register "gpe0_dw3" = "PMC_GPE_SW_31_0" - # Limit I2C0 Audio codec da7219 speed to 400kHz with manually tuned values. + # Enable I2C0 for audio codec at 400kHz register "i2c[0]" = "{ .speed = I2C_SPEED_FAST, - .speed_config[0] = { - .speed = I2C_SPEED_FAST, - .scl_lcnt = 0xd0, - .scl_hcnt = 0x68, - .sda_hold = 0x27, - } + .rise_time_ns = 104, + .fall_time_ns = 52, }" - # Enable I2C2 bus early for TPM access and configure as 400kHz - # with manually tuned values. + # Enable I2C2 bus early for TPM at 400kHz register "i2c[2]" = "{ .early_init = 1, .speed = I2C_SPEED_FAST, - .speed_config[0] = { - .speed = I2C_SPEED_FAST, - .scl_lcnt = 0xd0, - .scl_hcnt = 0x68, - .sda_hold = 0x27, - } + .rise_time_ns = 50, + .fall_time_ns = 23, }" - # Limit I2C3 WACOM touchscreen speed to 400kHz with manually tuned values. + # touchscreen at 400kHz register "i2c[3]" = "{ .speed = I2C_SPEED_FAST, - .speed_config[0] = { - .speed = I2C_SPEED_FAST, - .scl_lcnt = 0xd0, - .scl_hcnt = 0x68, - .sda_hold = 0x27, - } + .rise_time_ns = 76, + .fall_time_ns = 164, }" - # Limit trackpad speed to 400kHz with manually tuned values. + # trackpad at 400kHz register "i2c[4]" = "{ .speed = I2C_SPEED_FAST, - .speed_config[0] = { - .speed = I2C_SPEED_FAST, - .scl_lcnt = 0xd0, - .scl_hcnt = 0x68, - .sda_hold = 0x27, - } + .rise_time_ns = 90, + .fall_time_ns = 164, }" # Minimum SLP S3 assertion width 28ms. |