STM32H7 - Cleanup clock configuration and add frequency calculation
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@ -605,13 +605,14 @@ void SystemClock_Config(void)
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# else
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# else
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# if defined(STM32H743xx) || defined(STM32H750xx) || defined(STM32H723xx) || defined(STM32H7A3xx) || defined(STM32H7A3xxQ) || defined(STM32H725xx)
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# if defined(STM32H743xx) || defined(STM32H750xx) || defined(STM32H723xx) || defined(STM32H7A3xx) || defined(STM32H7A3xxQ) || defined(STM32H725xx)
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RCC_PeriphClkInit.PLL2.PLL2M = 5;
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RCC_PeriphClkInit.PLL2.PLL2M = 5;
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RCC_PeriphClkInit.PLL2.PLL2N = 500;
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RCC_PeriphClkInit.PLL2.PLL2N = 500; // 8Mhz (Oscillator Frequency) / 5 (PLL2M) = 1.6 * 500 (PLL2N) = 800Mhz.
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RCC_PeriphClkInit.PLL2.PLL2P = 2; // 500Mhz
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RCC_PeriphClkInit.PLL2.PLL2VCOSEL = RCC_PLL2VCOWIDE; // Wide VCO range:192 to 836 MHz
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RCC_PeriphClkInit.PLL2.PLL2Q = 3; // 266Mhz - 133Mhz can be derived from this for for QSPI if flash chip supports the speed.
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RCC_PeriphClkInit.PLL2.PLL2RGE = RCC_PLL2VCIRANGE_0; // PLL2 input between 1 and 2Mhz (1.6)
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RCC_PeriphClkInit.PLL2.PLL2R = 4; // 200Mhz HAL LIBS REQUIRE 200MHZ SDMMC CLOCK, see HAL_SD_ConfigWideBusOperation, SDMMC_HSpeed_CLK_DIV, SDMMC_NSpeed_CLK_DIV
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RCC_PeriphClkInit.PLL2.PLL2RGE = RCC_PLL2VCIRANGE_0;
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RCC_PeriphClkInit.PLL2.PLL2VCOSEL = RCC_PLL2VCOWIDE;
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RCC_PeriphClkInit.PLL2.PLL2FRACN = 0;
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RCC_PeriphClkInit.PLL2.PLL2FRACN = 0;
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RCC_PeriphClkInit.PLL2.PLL2P = 2; // 800Mhz / 2 = 400Mhz
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RCC_PeriphClkInit.PLL2.PLL2Q = 3; // 800Mhz / 3 = 266Mhz // 133Mhz can be derived from this for for QSPI if flash chip supports the speed.
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RCC_PeriphClkInit.PLL2.PLL2R = 4; // 800Mhz / 4 = 200Mhz // HAL LIBS REQUIRE 200MHZ SDMMC CLOCK, see HAL_SD_ConfigWideBusOperation, SDMMC_HSpeed_CLK_DIV, SDMMC_NSpeed_CLK_DIV
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RCC_PeriphClkInit.SdmmcClockSelection = RCC_SDMMCCLKSOURCE_PLL2;
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RCC_PeriphClkInit.SdmmcClockSelection = RCC_SDMMCCLKSOURCE_PLL2;
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HAL_RCCEx_PeriphCLKConfig(&RCC_PeriphClkInit);
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HAL_RCCEx_PeriphCLKConfig(&RCC_PeriphClkInit);
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# else
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# else
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