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soc: st: stm32 devices: SW JTAG port pins config with hw model V2

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During the migration to Hw model V2 the PR #63495
was not fully reported.
This change is adding the support Serial Wire / JTAG port pins

Signed-off-by: Francois Ramu <francois.ramu@st.com>
This commit is contained in:
Francois Ramu 2024-03-28 09:48:36 +01:00 committed by Fabio Baltieri
parent fa6eca312f
commit 7291450151
3 changed files with 52 additions and 0 deletions
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8
soc/st/stm32/Kconfig
View file

@ -39,6 +39,14 @@ config STM32_ENABLE_DEBUG_SLEEP_STOP
effectivly destroys the use-case of `west attach`. Also
SEGGER RTT and similar technologies need this.
config SWJ_ANALOG_PRIORITY
int "SWJ DP port to analog routine initialization priority"
default 49
help
Initialization priority of the routine within the PRE_KERNEL1 level.
This priority must be greater than GPIO_INIT_PRIORITY and lower than
UART_INIT_PRIORITY.
choice POWER_SUPPLY_CHOICE
prompt "STM32 power supply configuration"
default POWER_SUPPLY_LDO

4
soc/st/stm32/common/CMakeLists.txt
View file

@ -11,3 +11,7 @@ zephyr_linker_sources_ifdef(CONFIG_STM32_CCM SECTIONS ccm.ld)
zephyr_sources_ifdef(CONFIG_STM32_BACKUP_SRAM stm32_backup_sram.c)
zephyr_linker_sources_ifdef(CONFIG_STM32_BACKUP_SRAM SECTIONS stm32_backup_sram.ld)
if (NOT CONFIG_DEBUG AND CONFIG_PM)
zephyr_sources_ifdef(CONFIG_DT_HAS_SWJ_CONNECTOR_ENABLED pm_debug_swj.c)
endif()

40
soc/st/stm32/common/pm_debug_swj.c Normal file
View file

@ -0,0 +1,40 @@
/*
* Copyright (c) 2023 STMicroelectronics
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/drivers/pinctrl.h>
#include <zephyr/init.h>
#define SWJ_NODE DT_NODELABEL(swj_port)
PINCTRL_DT_DEFINE(SWJ_NODE);
const struct pinctrl_dev_config *swj_pcfg = PINCTRL_DT_DEV_CONFIG_GET(SWJ_NODE);
/*
* Serial Wire / JTAG port pins are enabled as part of SoC default configuration.
* When debug access is not needed and in case power consumption performance is
* expected, configure matching pins to analog in order to save power.
*/
static int swj_to_analog(void)
{
int err;
/* Set Serial Wire / JTAG port pins to analog mode */
err = pinctrl_apply_state(swj_pcfg, PINCTRL_STATE_SLEEP);
if (err < 0) {
__ASSERT(0, "SWJ pinctrl setup failed");
return err;
}
return 0;
}
/* Run this routine as the earliest pin configuration in the target,
* to avoid potential conflicts with devices accessing SWJ-DG pins for
* their own needs.
*/
SYS_INIT(swj_to_analog, PRE_KERNEL_1, CONFIG_SWJ_ANALOG_PRIORITY);