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https://github.com/ARM-software/arm-trusted-firmware.git
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45c70e6867
Changes stm32mp1 reset driver to API to add a timeout argument to stm32mp_reset_assert() and stm32mp_reset_deassert() and a return value. With a supplied timeout, the functions wait the target reset state is reached before returning. With a timeout of zero, the functions simply load target reset state in SoC interface and return without waiting. Helper functions stm32mp_reset_set() and stm32mp_reset_release() use a zero timeout and return without a return code. This change updates few stm32 drivers and plat/stm32mp1 blé_plat_setup.c accordingly without any functional change. functional change. Change-Id: Ia1a73a15125d3055fd8739c125b70bcb9562c27f Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
/*
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* Copyright (c) 2018-2019, STMicroelectronics - All Rights Reserved
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef STM32MP_RESET_H
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#define STM32MP_RESET_H
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#include <stdint.h>
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/*
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* Assert target reset, if @to_us non null, wait until reset is asserted
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*
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* @reset_id: Reset controller ID
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* @to_us: Timeout in microsecond, or 0 if not waiting
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* Return 0 on success and -ETIMEDOUT if waiting and timeout expired
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*/
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int stm32mp_reset_assert(uint32_t reset_id, unsigned int to_us);
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/*
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* Enable reset control for target resource
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*
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* @reset_id: Reset controller ID
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*/
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static inline void stm32mp_reset_set(uint32_t reset_id)
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{
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(void)stm32mp_reset_assert(reset_id, 0U);
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}
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/*
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* Deassert target reset, if @to_us non null, wait until reset is deasserted
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*
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* @reset_id: Reset controller ID
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* @to_us: Timeout in microsecond, or 0 if not waiting
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* Return 0 on success and -ETIMEDOUT if waiting and timeout expired
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*/
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int stm32mp_reset_deassert(uint32_t reset_id, unsigned int to_us);
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/*
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* Release reset control for target resource
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*
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* @reset_id: Reset controller ID
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*/
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static inline void stm32mp_reset_release(uint32_t reset_id)
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{
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(void)stm32mp_reset_deassert(reset_id, 0U);
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}
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#endif /* STM32MP_RESET_H */
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