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drivers: can: mcux_flexcan: Add clock configuration and enable

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Add explicit clock configuration and enable calls during driver
initialization.

Note: -ENOSYS is temporarily ignored as not all clock control
drivers currently implement the configure API. This handling
should be removed once all clock drivers support configure.

Signed-off-by: Albort Xue <yao.xue@nxp.com>
This commit is contained in:
Albort Xue
2026-01-13 15:14:56 +08:00
committed by Anas Nashif
parent dba5c5081f
commit d9e86ad878
1 changed files with 19 additions and 1 deletions
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20
drivers/can/can_mcux_flexcan.c
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@@ -1,6 +1,6 @@
/*
* Copyright (c) 2019-2026 Vestas Wind Systems A/S
* Copyright 2025 NXP
* Copyright 2025-2026 NXP
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -1176,6 +1176,24 @@ static int mcux_flexcan_init(const struct device *dev)
return -ENODEV;
}
err = clock_control_configure(config->clock_dev, config->clock_subsys, NULL);
if (err) {
/* Check if error is due to lack of support */
if (err != -ENOSYS) {
/* Real error occurred */
LOG_ERR("Failed to configure clock: %d", err);
return err;
}
}
#if FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL
err = clock_control_on(config->clock_dev, config->clock_subsys);
if (err) {
LOG_ERR("Failed to enable clock: %d", err);
return err;
}
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
DEVICE_MMIO_NAMED_MAP(dev, flexcan_mmio, K_MEM_CACHE_NONE | K_MEM_DIRECT_MAP);
LOG_DBG("Message Buffers: %d, RX MB: %d, TX MB: %d",