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drivers: timer: stm32: Check return of clock functions

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That will speed up debugging.

Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
This commit is contained in:
Erwan Gouriou 2022-08-23 15:16:51 +02:00 • committed by Fabio Baltieri
commit e8e72882e1
1 changed files with 16 additions and 4 deletions
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20
drivers/timer/stm32_lptim_timer.c
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@ -283,6 +283,8 @@ uint32_t sys_clock_cycle_get_32(void)
static int sys_clock_driver_init(const struct device *dev)
{
int err;
ARG_UNUSED(dev);
if (!device_is_ready(clk_ctrl)) {
@ -290,7 +292,10 @@ static int sys_clock_driver_init(const struct device *dev)
}
/* Enable LPTIM bus clock */
clock_control_on(clk_ctrl, (clock_control_subsys_t *) &lptim_clk[0]);
err = clock_control_on(clk_ctrl, (clock_control_subsys_t *) &lptim_clk[0]);
if (err < 0) {
return -EIO;
}
#if defined(LL_APB1_GRP1_PERIPH_LPTIM1)
LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_LPTIM1);
@ -308,13 +313,20 @@ static int sys_clock_driver_init(const struct device *dev)
}
/* Enable LPTIM clock source */
clock_control_configure(clk_ctrl, (clock_control_subsys_t *) &lptim_clk[1],
NULL);
err = clock_control_configure(clk_ctrl,
(clock_control_subsys_t *) &lptim_clk[1],
NULL);
if (err < 0) {
return -EIO;
}
/* Get LPTIM clock freq */
clock_control_get_rate(clk_ctrl, (clock_control_subsys_t *) &lptim_clk[1],
err = clock_control_get_rate(clk_ctrl, (clock_control_subsys_t *) &lptim_clk[1],
&lptim_clock_freq);
if (err < 0) {
return -EIO;
}
#if defined(CONFIG_SOC_SERIES_STM32L0X)
/* Driver only supports freqs up to 32768Hz. On L0, LSI freq is 37KHz,
* which will overflow the LPTIM counter.