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cypress: psoc64: Reserve timer channels used by TF-M 

There are two timers, Timer0 and Timer1, available on the PSoC64. Timer0
has 8 channels and Timer1 has 24 channels. TF-M regression tests make
use of Timer0 Channel 0 and Timer0 Channel 1. Therefore, reserve the
timer channels used by TF-M. This approach can be replaced once we have
a way to allocate dedicated timers for TF-M and Mbed OS.

Signed-off-by: Devaraj Ranganna <devaraj.ranganna@arm.com>
Signed-off-by: Vikas Katariya <vikas.katariya@arm.com>
pull/12271/head
Devaraj Ranganna 2020-01-31 14:31:43 +00:00 committed by Vikas Katariya
parent c8ab263388
commit cc8cc5903a
1 changed files with 18 additions and 1 deletions
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19
targets/TARGET_Cypress/TARGET_PSOC6/cy_us_ticker_api.c
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@ -1,5 +1,5 @@
/* mbed Microcontroller Library
* Copyright (c) 2019, Arm Limited and affiliates.
* Copyright (c) 2019-2020, Arm Limited and affiliates.
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
@ -54,6 +54,23 @@ static void cy_us_ticker_irq_handler(MBED_UNUSED void *arg, MBED_UNUSED cyhal_ti
void us_ticker_init(void)
{
if (!cy_us_ticker_initialized) {
#ifdef TARGET_TFM
/* There are two timers, Timer0 and Timer1, available on the PSoC64.
* Timer0 has 8 channels and Timer1 has 24 channels. TF-M regression
* tests make use of Timer0 Channel 1 and Timer0 Channel 2. Therefore,
* reserve the timer channels used by TF-M. This approach can be
* replaced once we have a way to allocate dedicated timers for TF-M
* and Mbed OS. */
cyhal_resource_inst_t res = { CYHAL_RSC_TCPWM, 0, 0 };
if(CY_RSLT_SUCCESS != cyhal_hwmgr_reserve(&res)) {
MBED_ERROR(MBED_MAKE_ERROR(MBED_MODULE_DRIVER, MBED_ERROR_CODE_FAILED_OPERATION), "cyhal_timer_init");
}
res.channel_num = 1;
if(CY_RSLT_SUCCESS != cyhal_hwmgr_reserve(&res)) {
MBED_ERROR(MBED_MAKE_ERROR(MBED_MODULE_DRIVER, MBED_ERROR_CODE_FAILED_OPERATION), "cyhal_timer_init");
}
#endif
if (CY_RSLT_SUCCESS != cyhal_timer_init(&cy_us_timer, NC, NULL)) {
MBED_ERROR(MBED_MAKE_ERROR(MBED_MODULE_DRIVER, MBED_ERROR_CODE_FAILED_OPERATION), "cyhal_timer_init");
}