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Documentation/am67: Document GPIO and SPI support on t3-gem-o1.

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Add a Peripheral Support section to the board page listing the GPIO and
MCU_MCSPI0 drivers, and replace the "UART console only" warning on both
the chip and board pages -- it no longer describes the port.  The
replacement states what actually constrains the port: NuttX runs on the
R5F under RemoteProc and depends on the bootloader or Linux Device
Manager having powered and clocked the peripherals, because there is no
TISCI client yet.

Assisted-by: Claude Code:claude-opus-5
Signed-off-by: Ulaş Sertan Kemeç <sertan.usk@gmail.com>
This commit is contained in:
Ulaş Sertan Kemeç 2026-09-10 10:35:25 +03:00 • committed by Alan C. Assis
parent 4f3b818c3f
commit 762d2b7958
4 changed files with 129 additions and 15 deletions
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116
arch/arm/src/am67/am67_pinmux.c
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@ -10,7 +10,7 @@
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
@ -68,6 +68,42 @@ static struct pinmux_conf_s g_am67_pinmux_conf[] =
{PINMUX_END, PINMUX_END}
};
static struct pinmux_conf_s g_am67_epwm0_pinmux_conf[] =
{
/* EPWM0 A output pin (B20, mode 2 = EHRPWM0_A) */
{
PIN_SPI0_CS0,
(PIN_MODE(2) | PIN_PULL_DISABLE)
},
/* EPWM0 B output pin (C20, mode 2 = EHRPWM0_B) */
{
PIN_SPI0_CS1,
(PIN_MODE(2) | PIN_PULL_DISABLE)
},
{PINMUX_END, PINMUX_END}
};
static struct pinmux_conf_s g_am67_epwm1_pinmux_conf[] =
{
/* EPWM1 A output pin (D20, mode 2 = EHRPWM1_A) */
{
PIN_SPI0_CLK,
(PIN_MODE(2) | PIN_PULL_DISABLE)
},
/* EPWM1 B output pin (E19, mode 2 = EHRPWM1_B) */
{
PIN_SPI0_D0,
(PIN_MODE(2) | PIN_PULL_DISABLE)
},
{PINMUX_END, PINMUX_END}
};
static struct pinmux_conf_s g_am67_mcu_spi_pinmux_conf[] =
{
/* MCU_SPI0_CLK */
@ -107,13 +143,6 @@ static struct pinmux_conf_s g_am67_mcu_spi_pinmux_conf[] =
(PIN_MODE(0) | PIN_PULL_DISABLE)
},
/* MCU_SPI0_CS2 (HAT spidev, channel 2) - WKUP_UART0_RXD pad, mode 2 */
{
PIN_WKUP_UART0_RXD,
(PIN_MODE(2) | PIN_PULL_DISABLE)
},
/* MCU_SPI0_CS3 (ICM20948, channel 3) - MCU_MCAN0_TX pad, mode 2 */
{
@ -130,6 +159,42 @@ static struct pinmux_conf_s g_am67_mcu_spi_pinmux_conf[] =
{PINMUX_END, PINMUX_END}
};
static struct pinmux_conf_s g_am67_mcu_i2c_pinmux_conf[] =
{
#ifdef CONFIG_AM67_I2C0
/* MCU_I2C0_SCL */
{
PIN_MCU_I2C0_SCL,
(PIN_MODE(0) | PIN_INPUT_ENABLE | PIN_PULL_DISABLE)
},
/* MCU_I2C0_SDA */
{
PIN_MCU_I2C0_SDA,
(PIN_MODE(0) | PIN_INPUT_ENABLE | PIN_PULL_DISABLE)
},
#endif
#ifdef CONFIG_AM67_WKUP_I2C0
/* WKUP_I2C0_SCL */
{
PIN_WKUP_I2C0_SCL,
(PIN_MODE(0) | PIN_INPUT_ENABLE | PIN_PULL_DISABLE)
},
/* WKUP_I2C0_SDA */
{
PIN_WKUP_I2C0_SDA,
(PIN_MODE(0) | PIN_INPUT_ENABLE | PIN_PULL_DISABLE)
},
#endif
{PINMUX_END, PINMUX_END}
};
/****************************************************************************
* Private Functions
****************************************************************************/
@ -260,3 +325,38 @@ void am67_spi_pinmux_init(void)
{
am67_mcu_pinmux_config(g_am67_mcu_spi_pinmux_conf);
}
/****************************************************************************
* Name: am67_i2c_pinmux_init
*
* Description:
* Configure MCU_I2C0 pin multiplexing for onboard sensors.
*
****************************************************************************/
void am67_i2c_pinmux_init(void)
{
am67_mcu_pinmux_config(g_am67_mcu_i2c_pinmux_conf);
}
/****************************************************************************
* Name: am67_epwm_pinmux_init
*
* Description:
* Configure the output pin multiplexing (A and B pads) for the given
* EPWM instance.
*
****************************************************************************/
void am67_epwm_pinmux_init(int epwm)
{
if (epwm == 0)
{
am67_pinmux_config(g_am67_epwm0_pinmux_conf);
}
else
{
am67_pinmux_config(g_am67_epwm1_pinmux_conf);
}
}