diff options
| author | Jon Murphy <jpmurphy@google.com> | 2023-03-29 18:22:17 -0600 |
|---|---|---|
| committer | Eric Lai <eric_lai@quanta.corp-partner.google.com> | 2023-04-13 03:01:17 +0000 |
| commit | 4d8a352c5a9541cfce059269388a22216f3c24af (patch) | |
| tree | 7951014cfe152ef594401cf79411703463f1d443 /src/mainboard | |
| parent | cec22f1e93dfa98cdd6a7c6cf9bd878487fe7c9c (diff) | |
mb/google/myst: Add initial I2C configuration
Add I2C peripheral reset configuration required during early init.
Enabled I2C generic and HID drivers.
BUG=b:275939564
TEST=builds
Signed-off-by: Jon Murphy <jpmurphy@google.com>
Change-Id: I44668295fb6ed03992df9d9fc075792e181d1a8a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74108
Reviewed-by: Tim Van Patten <timvp@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/myst/Kconfig | 2 | ||||
| -rw-r--r-- | src/mainboard/google/myst/variants/baseboard/devicetree.cb | 39 |
2 files changed, 41 insertions, 0 deletions
diff --git a/src/mainboard/google/myst/Kconfig b/src/mainboard/google/myst/Kconfig index 8405e8ad13..956267f824 100644 --- a/src/mainboard/google/myst/Kconfig +++ b/src/mainboard/google/myst/Kconfig @@ -9,6 +9,8 @@ config BOARD_SPECIFIC_OPTIONS def_bool y select AMD_SOC_CONSOLE_UART select BOARD_ROMSIZE_KB_16384 + select DRIVERS_I2C_GENERIC + select DRIVERS_I2C_HID select EC_GOOGLE_CHROMEEC select EC_GOOGLE_CHROMEEC_ESPI select ELOG diff --git a/src/mainboard/google/myst/variants/baseboard/devicetree.cb b/src/mainboard/google/myst/variants/baseboard/devicetree.cb index e542817fc0..fbc9e93216 100644 --- a/src/mainboard/google/myst/variants/baseboard/devicetree.cb +++ b/src/mainboard/google/myst/variants/baseboard/devicetree.cb @@ -1,5 +1,40 @@ # SPDX-License-Identifier: GPL-2.0-or-later chip soc/amd/phoenix + register "i2c_scl_reset" = "GPIO_I2C0_SCL | GPIO_I2C1_SCL | + GPIO_I2C2_SCL | GPIO_I2C3_SCL" + + # I2C Pad Control RX Select Configuration + register "i2c_pad[0].rx_level" = "I2C_PAD_RX_1_8V" # Trackpad + register "i2c_pad[1].rx_level" = "I2C_PAD_RX_1_8V" # Touchscreen + register "i2c_pad[2].rx_level" = "I2C_PAD_RX_1_8V" # GSC + register "i2c_pad[3].rx_level" = "I2C_PAD_RX_1_8V" # Speaker, Codec, P-SAR, USB + + # I2C Config + #+-------------------+----------------------------+ + #| Field | Value | + #+-------------------+----------------------------+ + #| I2C0 | Trackpad | + #| I2C1 | Touchscreen | + #| I2C2 | GSC TPM | + #| I2C3 | Speaker, Codec, P-SAR, USB | + #+-------------------+----------------------------+ + register "i2c[0]" = "{ + .speed = I2C_SPEED_FAST, + }" + + register "i2c[1]" = "{ + .speed = I2C_SPEED_FAST, + }" + + register "i2c[2]" = "{ + .speed = I2C_SPEED_FAST, + .early_init = true, + }" + + register "i2c[3]" = "{ + .speed = I2C_SPEED_FAST, + }" + device domain 0 on device ref gpp_bridge_a on # Internal GPP Bridge 0 to Bus A device ref gfx on end # Internal GPU (GFX) @@ -111,4 +146,8 @@ chip soc/amd/phoenix end end # domain device ref uart_0 on end # UART0 + device ref i2c_0 on end + device ref i2c_1 on end + device ref i2c_2 on end + device ref i2c_3 on end end # chip soc/amd/phoenix |