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/* Copyright 2021 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "common.h"
#include "compile_time_macros.h"
#include "hooks.h"
#include "i2c.h"
#define BOARD_ID_FAST_PLUS_CAPABLE 2
/* I2C port map configuration */
const struct i2c_port_t i2c_ports[] = {
{
/* I2C0 */
.name = "sensor",
.port = I2C_PORT_SENSOR,
.kbps = 400,
.scl = GPIO_EC_I2C_SENSOR_SCL,
.sda = GPIO_EC_I2C_SENSOR_SDA,
},
{
/* I2C1 */
.name = "tcpc0,2",
.port = I2C_PORT_USB_C0_C2_TCPC,
.kbps = 1000,
.scl = GPIO_EC_I2C_USB_C0_C2_TCPC_SCL,
.sda = GPIO_EC_I2C_USB_C0_C2_TCPC_SDA,
},
{
/* I2C2 */
.name = "ppc0,2",
.port = I2C_PORT_USB_C0_C2_PPC,
.kbps = 1000,
.scl = GPIO_EC_I2C_USB_C0_C2_PPC_BC_SCL,
.sda = GPIO_EC_I2C_USB_C0_C2_PPC_BC_SDA,
},
{
/* I2C3 */
.name = "retimer0,2",
.port = I2C_PORT_USB_C0_C2_MUX,
.kbps = 1000,
.scl = GPIO_EC_I2C_USB_C0_C2_RT_SCL,
.sda = GPIO_EC_I2C_USB_C0_C2_RT_SDA,
},
{
/* I2C4 C1 TCPC */
.name = "tcpc1",
.port = I2C_PORT_USB_C1_TCPC,
.kbps = 1000,
.scl = GPIO_EC_I2C_USB_C1_TCPC_SCL,
.sda = GPIO_EC_I2C_USB_C1_TCPC_SDA,
.flags = I2C_PORT_FLAG_DYNAMIC_SPEED,
},
{
/* I2C5 */
.name = "battery",
.port = I2C_PORT_BATTERY,
.kbps = 100,
.scl = GPIO_EC_I2C_BAT_SCL,
.sda = GPIO_EC_I2C_BAT_SDA,
},
{
/* I2C6 */
.name = "ppc1",
.port = I2C_PORT_USB_C1_PPC,
.kbps = 1000,
.scl = GPIO_EC_I2C_USB_C1_MIX_SCL,
.sda = GPIO_EC_I2C_USB_C1_MIX_SDA,
.flags = I2C_PORT_FLAG_DYNAMIC_SPEED,
},
{
/* I2C7 */
.name = "eeprom",
.port = I2C_PORT_EEPROM,
.kbps = 400,
.scl = GPIO_EC_I2C_MISC_SCL_R,
.sda = GPIO_EC_I2C_MISC_SDA_R,
},
};
const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
/*
* I2C controllers are initialized in main.c. This sets the speed much
* later, but before I2C peripherals are initialized.
*/
static void set_board_legacy_i2c_speeds(void)
{
if (get_board_id() >= BOARD_ID_FAST_PLUS_CAPABLE)
return;
ccprints("setting USB DB I2C buses to 400 kHz\n");
i2c_set_freq(I2C_PORT_USB_C1_TCPC, I2C_FREQ_400KHZ);
i2c_set_freq(I2C_PORT_USB_C1_PPC, I2C_FREQ_400KHZ);
}
DECLARE_HOOK(HOOK_INIT, set_board_legacy_i2c_speeds, HOOK_PRIO_INIT_I2C - 1);
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