diff options
Diffstat (limited to 'board/c2d2/gpio.inc')
| -rw-r--r-- | board/c2d2/gpio.inc | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/board/c2d2/gpio.inc b/board/c2d2/gpio.inc new file mode 100644 index 0000000000..a6533b42b7 --- /dev/null +++ b/board/c2d2/gpio.inc @@ -0,0 +1,50 @@ +/* -*- mode:c -*- + * + * Copyright 2019 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. + */ + +GPIO(UART_DBG_TX_H1_RX, PIN(A, 0), GPIO_INPUT) +GPIO(UART_H1_TX_DBG_RX, PIN(A, 1), GPIO_INPUT) +GPIO(EN_MISO_MOSI_H1_UART, PIN(A, 2), GPIO_OUT_LOW) +GPIO(SPIVREF_RSVD_H1VREF_H1_RST_ODL, PIN(A, 3), GPIO_INPUT) +GPIO(SPIVREF_HOLDN_ECVREF_H1_PWRBTN_ODL, PIN(A, 4), GPIO_INPUT) +GPIO(EN_CLK_CSN_EC_UART, PIN(A, 7), GPIO_OUT_LOW) + +GPIO(EN_SPIVREF_RSVD_H1VREF_H1_RST, PIN(B, 2), GPIO_OUT_LOW) +GPIO(EN_SPIVREF_HOLDN_ECVREF_H1_PWRBTN, PIN(B, 3), GPIO_OUT_LOW) +GPIO(SEL_SPIVREF_H1VREF_3V3, PIN(B, 4), GPIO_OUT_LOW) +GPIO(SEL_SPIVREF_ECVREF_3V3, PIN(B, 5), GPIO_OUT_LOW) +GPIO(UART_DBG_TX_EC_RX_SCL, PIN(B, 6), GPIO_INPUT) +GPIO(UART_EC_TX_DBG_RX_SDA, PIN(B, 7), GPIO_INPUT) +/* Start C2D2 in UART mode */ +GPIO(C2D2_MUX_UART_ODL, PIN(B, 8), GPIO_ODR_LOW) + +/* I2C pins should be configured as inputs until I2C module is */ +/* initialized. This will avoid driving the lines unintentionally.*/ +GPIO(UART_DBG_TX_AP_RX_INA_SCL, PIN(B, 10), GPIO_INPUT) +GPIO(UART_AP_TX_DBG_RX_INA_SDA, PIN(B, 11), GPIO_INPUT) + +/* Flash SPI interface */ +GPIO(SPI_CSN, PIN(B, 12), GPIO_INPUT) +GPIO(SPI_CLK, PIN(B, 13), GPIO_INPUT) +GPIO(SPI_MISO, PIN(B, 14), GPIO_INPUT) +GPIO(SPI_MOSI, PIN(B, 15), GPIO_INPUT) + +/* Unimplemented signals since we are not an EC */ +UNIMPLEMENTED(ENTERING_RW) +UNIMPLEMENTED(WP_L) + +/* Default alternate mode pins */ +ALTERNATE(PIN_MASK(A, GENMASK(15, 14)), 1, MODULE_UART, 0) /* USART2: PA14/PA15 - Servo stm32 console UART*/ + +ALTERNATE(PIN_MASK(B, GENMASK( 7, 6)), 0, MODULE_USART, 0) /* USART1: PB6/PB7 - Servo UART1 (EC) */ +ALTERNATE(PIN_MASK(B, GENMASK(11, 10)), 4, MODULE_USART, 0) /* USART3: PB10/PB11 - Servo UART2 (AP) */ +ALTERNATE(PIN_MASK(A, GENMASK( 1, 0)), 4, MODULE_USART, 0) /* USART4: PA0/PA1 - Servo UART3 (H1) */ + +/* + * Note BIT(12) is intentionally not marked for alternate mode since it is + * directly controlled with gpio_set_level and configured in the spi driver. + */ +ALTERNATE(PIN_MASK(B, GENMASK(15, 13)), 0, MODULE_SPI_FLASH, 0) /* SPI: PB15 - PB12 MOSI, MISO, CLK, CS */ |