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drivers: pinctrl: add pinctrl drivers for arm v2m_beetle

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Adds pinctrl driver for the v2m_beetle board target.

Signed-off-by: Samuel Chee <samche01@arm.com>
Signed-off-by: Sudan Landge <sudan.landge@arm.com>
This commit is contained in:
Samuel Chee 2025-02-24 22:41:02 +00:00 • committed by Benjamin Cabé
commit 7e95006abf
7 changed files with 195 additions and 0 deletions
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1
drivers/pinctrl/CMakeLists.txt
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@ -8,6 +8,7 @@ zephyr_library_sources_ifdef(CONFIG_PINCTRL_TELINK_B91 pinctrl_b91.c)
zephyr_library_sources_ifdef(CONFIG_PINCTRL_AMBIQ pinctrl_ambiq.c)
zephyr_library_sources_ifdef(CONFIG_PINCTRL_ARM_MPS2 pinctrl_arm_mps2.c)
zephyr_library_sources_ifdef(CONFIG_PINCTRL_ARM_MPS3 pinctrl_arm_mps3.c)
zephyr_library_sources_ifdef(CONFIG_PINCTRL_ARM_V2M_BEETLE pinctrl_arm_v2m_beetle.c)
zephyr_library_sources_ifdef(CONFIG_PINCTRL_GD32_AF pinctrl_gd32_af.c)
zephyr_library_sources_ifdef(CONFIG_PINCTRL_GD32_AFIO pinctrl_gd32_afio.c)
zephyr_library_sources_ifdef(CONFIG_PINCTRL_ITE_IT8XXX2 pinctrl_ite_it8xxx2.c)

1
drivers/pinctrl/Kconfig
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@ -38,6 +38,7 @@ source "drivers/pinctrl/Kconfig.b91"
source "drivers/pinctrl/Kconfig.ambiq"
source "drivers/pinctrl/Kconfig.arm_mps2"
source "drivers/pinctrl/Kconfig.arm_mps3"
source "drivers/pinctrl/Kconfig.arm_v2m_beetle"
source "drivers/pinctrl/Kconfig.gd32"
source "drivers/pinctrl/Kconfig.it8xxx2"
source "drivers/pinctrl/Kconfig.npcx"

9
drivers/pinctrl/Kconfig.arm_v2m_beetle Normal file
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@ -0,0 +1,9 @@
# Copyright 2025 Arm Limited and/or its affiliates <open-source-office@arm.com>
# SPDX-License-Identifier: Apache-2.0
config PINCTRL_ARM_V2M_BEETLE
bool "Arm V2M Beetle pin controller driver"
default y
depends on DT_HAS_ARM_V2M_BEETLE_PINCTRL_ENABLED
help
Arm MPS2 V2M Beetle driver

44
drivers/pinctrl/pinctrl_arm_v2m_beetle.c Normal file
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@ -0,0 +1,44 @@
/*
* Copyright 2025 Arm Limited and/or its affiliates <open-source-office@arm.com>
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "zephyr/device.h"
#include "zephyr/drivers/gpio.h"
#include <zephyr/drivers/pinctrl.h>
#include <zephyr/devicetree/gpio.h>
#include <zephyr/drivers/gpio/gpio_cmsdk_ahb.h>
#define EXPANSION_SHIELD_POWER_ENABLE_MASK BIT(15)
static const struct device *const gpio_ports[] = {DEVICE_DT_GET_OR_NULL(DT_NODELABEL(gpio0)),
DEVICE_DT_GET_OR_NULL(DT_NODELABEL(gpio1))};
static int pinctrl_configure_pin(const pinctrl_soc_pin_t *pin)
{
uint32_t flags = pin->input_enable ? GPIO_INPUT : GPIO_OUTPUT;
/* Each gpio has 16 pins, so divide by 16 to get specific gpio*/
const struct device *gpio_dev = gpio_ports[pin->pin_num >> 4];
return cmsdk_ahb_gpio_config(gpio_dev, pin->pin_num % 16, flags);
}
int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt, uintptr_t reg)
{
ARG_UNUSED(reg);
for (uint8_t i = 0U; i < pin_cnt; i++) {
if (pinctrl_configure_pin(pins++) == -ENOTSUP) {
return -ENOTSUP;
}
}
const struct gpio_cmsdk_ahb_cfg *const cfg = gpio_ports[1]->config;
/* Set the ARD_PWR_EN GPIO1[15] as an output */
cfg->port->outenableset |= EXPANSION_SHIELD_POWER_ENABLE_MASK;
/* Set on 3v3 (for ARDUINO HDR compliance) */
cfg->port->data |= EXPANSION_SHIELD_POWER_ENABLE_MASK;
return 0;
}

40
dts/bindings/pinctrl/arm,v2m_beetle-pinctrl.yaml Normal file
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@ -0,0 +1,40 @@
# Copyright 2025 Arm Limited and/or its affiliates <open-source-office@arm.com>
# SPDX-License-Identifier: Apache-2.0
description: |
The node has the 'pinctrl' node label set in your SoC's devicetree,
so you can modify it like this:
&pinctrl {
/* your modifications go here */
};
All device pin configurations should be placed in child nodes of the
'pinctrl' node, as shown in this example:
/* You can put this in places like a board-pinctrl.dtsi file in
* your board directory, or a devicetree overlay in your application.
*/
compatible: "arm,v2m_beetle-pinctrl"
include: base.yaml
child-binding:
description: |
Definitions for a pinctrl state.
child-binding:
include:
- name: pincfg-node.yaml
property-allowlist:
- input-enable
properties:
pinmux:
required: true
type: array
description: |
An array of pins sharing the same group properties. Each
element of the array is an integer constructed from the
pin number and the alternative function of the pin.

49
include/zephyr/dt-bindings/pinctrl/arm-v2m_beetle-pinctrl.h Normal file
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@ -0,0 +1,49 @@
/*
* Copyright 2025 Arm Limited and/or its affiliates <open-source-office@arm.com>
*
* SPDX-License-Identifier: Apache-2.0
*/
#define V2M_BEETLE_ALT_FUNC_POS 0
#define V2M_BEETLE_ALT_FUNC_MASK 0x7
#define V2M_BEETLE_EXP_NUM_POS 3
#define V2M_BEETLE_EXP_NUM_MASK 0x1F8
#define V2M_BEETLE_PINCTRL_FUNC_UART 0
#define V2M_BEETLE_PINCTRL_FUNC_GPIO 1
#define V2M_BEETLE_PINCTRL_FUNC_I2C 2
#define V2M_BEETLE_PINCTRL_FUNC_SPI 3
#define V2M_BEETLE_PINCTRL_FUNC_QSPI 4
#define V2M_BEETLE_PINMUX(alt_func, exp_num) (exp_num << V2M_BEETLE_EXP_NUM_POS | \
alt_func << V2M_BEETLE_ALT_FUNC_POS)
/* GPIO 0 */
#define UART0_RXD_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_UART, 0)
#define UART0_TXD_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_UART, 1)
#define SPI0_SS_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_SPI, 10)
#define SPI0_MOSI_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_SPI, 11)
#define SPI0_MISO_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_SPI, 12)
#define SPI0_SCK_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_SPI, 13)
#define SBCON0_SDA_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_I2C, 14)
#define SBCON0_SCL_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_I2C, 15)
/* GPIO 1 */
#define UART1_RXD_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_UART, 16)
#define UART1_TXD_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_UART, 17)
#define SPI1_SS_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_SPI, 18)
#define SPI1_MOSI_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_SPI, 19)
#define SPI1_MISO_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_SPI, 20)
#define SPI1_SCK_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_SPI, 21)
#define SBCON1_SDA_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_I2C, 22)
#define SBCON1_SCL_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_I2C, 23)
#define QSPI_CS2_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_QSPI, 24)
#define QSPI_CS1_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_QSPI, 25)
#define QSPI_IOF0_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_QSPI, 26)
#define QSPI_IOF1_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_QSPI, 27)
#define QSPI_IOF2_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_QSPI, 28)
#define QSPI_IOF3_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_QSPI, 29)
#define QSPI_SCK_EXP V2M_BEETLE_PINMUX(V2M_BEETLE_PINCTRL_FUNC_QSPI, 30)

51
soc/arm/beetle/pinctrl_soc.h Normal file
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@ -0,0 +1,51 @@
/*
* Copyright 2025 Arm Limited and/or its affiliates <open-source-office@arm.com>
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/dt-bindings/pinctrl/arm-v2m_beetle-pinctrl.h>
/**
* @brief Type to hold a pin's pinctrl configuration.
*/
struct beetle_pinctrl_soc_pin {
/** Pin number 0..52 */
uint32_t pin_num : 6;
/** Alternative function (UART, SPI, etc.) */
uint32_t alt_func : 3;
/** Enable the pin as an input */
uint32_t input_enable : 1;
};
typedef struct beetle_pinctrl_soc_pin pinctrl_soc_pin_t;
/**
* @brief Utility macro to initialize each pin.
*
* @param node_id Node identifier.
* @param prop Property name.
* @param idx Property entry index.
*/
#define Z_PINCTRL_STATE_PIN_INIT(node_id, prop, idx) \
{ \
BEETLE_GET_PIN_NUM(DT_PROP_BY_IDX(node_id, prop, idx)), \
BEETLE_GET_PIN_ALT_FUNC(DT_PROP_BY_IDX(node_id, prop, idx)), \
DT_PROP(node_id, input_enable), \
},
/**
* @brief Utility macro to initialize state pins contained in a given property.
*
* @param node_id Node identifier.
* @param prop Property name describing state pins.
*/
#define Z_PINCTRL_STATE_PINS_INIT(node_id, prop) \
{DT_FOREACH_CHILD_VARGS(DT_PHANDLE(node_id, prop), \
DT_FOREACH_PROP_ELEM, pinmux, \
Z_PINCTRL_STATE_PIN_INIT)}
#define BEETLE_GET_PIN_NUM(pinctrl) \
(((pinctrl) >> V2M_BEETLE_EXP_NUM_POS) & V2M_BEETLE_EXP_NUM_MASK)
#define BEETLE_GET_PIN_ALT_FUNC(pinctrl) \
(((pinctrl) >> V2M_BEETLE_ALT_FUNC_POS) & V2M_BEETLE_ALT_FUNC_MASK)