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drivers/clock: stm32wl config restructure cpu2 prescaler assignment

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This commmit restructures the clock_controller code such that the cpu2
prescler assignment later can be excluded for single core socs.

The stm32wl mcu line has variants with a single cortex-m4 core
(stm32wle5), therefore the prescaler for the second clock should
only be set for dual core socs.
This commit still checks for the complete series
(CONFIG_SOC_SERIES_STM32WLX) as the single core variants are not
yet introduced, later the condition should check for a flag like
CONFIG_SOC_STM32WL5X instead.

Signed-off-by: Thomas Stranger <thomas.stranger@outlook.com>
This commit is contained in:
Thomas Stranger 2021-05-03 10:54:56 +02:00 • committed by Kumar Gala
commit 42a47a58ea
1 changed files with 8 additions and 8 deletions
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16
drivers/clock_control/clock_stm32_ll_common.c
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@ -56,13 +56,14 @@
*/
static void config_bus_clk_init(LL_UTILS_ClkInitTypeDef *clk_init)
{
#if defined(CONFIG_SOC_SERIES_STM32WBX) || defined(CONFIG_SOC_SERIES_STM32WLX)
clk_init->CPU2CLKDivider = ahb_prescaler(STM32_CPU2_PRESCALER);
#endif
#if defined(CONFIG_SOC_SERIES_STM32WBX)
clk_init->CPU1CLKDivider = ahb_prescaler(STM32_CPU1_PRESCALER);
clk_init->CPU2CLKDivider = ahb_prescaler(STM32_CPU2_PRESCALER);
clk_init->AHB4CLKDivider = ahb_prescaler(STM32_AHB4_PRESCALER);
#elif defined(CONFIG_SOC_SERIES_STM32WLX)
clk_init->CPU1CLKDivider = ahb_prescaler(STM32_CPU1_PRESCALER);
clk_init->CPU2CLKDivider = ahb_prescaler(STM32_CPU2_PRESCALER);
clk_init->AHB3CLKDivider = ahb_prescaler(STM32_AHB3_PRESCALER);
#else
clk_init->AHBCLKDivider = ahb_prescaler(STM32_AHB_PRESCALER);
@ -572,16 +573,15 @@ int stm32_clock_control_init(const struct device *dev)
/* Set APB1 & APB2 prescaler*/
LL_RCC_SetAPB1Prescaler(s_ClkInitStruct.APB1CLKDivider);
LL_RCC_SetAPB2Prescaler(s_ClkInitStruct.APB2CLKDivider);
#if defined(CONFIG_SOC_SERIES_STM32WBX) || defined(CONFIG_SOC_SERIES_STM32WLX)
LL_C2_RCC_SetAHBPrescaler(s_ClkInitStruct.CPU2CLKDivider);
#endif
#ifdef CONFIG_SOC_SERIES_STM32WBX
/* Set C2 AHB & AHB4 prescalers */
LL_C2_RCC_SetAHBPrescaler(s_ClkInitStruct.CPU2CLKDivider);
LL_RCC_SetAHB4Prescaler(s_ClkInitStruct.AHB4CLKDivider);
#endif /* CONFIG_SOC_SERIES_STM32WBX */
#endif
#ifdef CONFIG_SOC_SERIES_STM32WLX
/* Set C2 AHB & AHB3 prescalers */
LL_C2_RCC_SetAHBPrescaler(s_ClkInitStruct.CPU2CLKDivider);
LL_RCC_SetAHB3Prescaler(s_ClkInitStruct.AHB3CLKDivider);
#endif /* CONFIG_SOC_SERIES_STM32WLX */
#endif
/* If freq not increased, set flash latency after all clock setting */
if (new_hclk_freq <= old_hclk_freq) {
LL_SetFlashLatency(new_hclk_freq);