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stm32:rcc: update _get_clock (uart/i2c) to handle all cases

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Adds handling for missing cases.  While i2c only has 3 cases, uarts have
all 4, so make sure they're handled properly.
Removes duplicated/redundant definitions.
Adds doxygen wrappers, even if only for internal use.

Fixes: e41ac6ea71 stm32: added peripheral clock get helpers for all stm32
Signed-of-by: Karl Palsson <karlp@tweak.au>
This commit is contained in:
Karl Palsson
2023-01-13 02:06:34 +00:00
parent df654d7f28
commit 88e91c9a7c
11 changed files with 175 additions and 168 deletions
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16
lib/stm32/h7/rcc.c
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@@ -277,17 +277,21 @@ uint32_t rcc_get_usart_clk_freq(uint32_t usart)
}
/* Based on extracted clksel value, return the clock. */
if (clksel == RCC_D2CCIP2R_USARTSEL_PCLK) {
switch(clksel) {
case RCC_D2CCIP2R_USARTSEL_PCLK:
return pclk;
} else if (clksel == RCC_D2CCIP2R_USARTSEL_PLL2Q) {
case RCC_D2CCIP2R_USARTSEL_PLL2Q:
return rcc_clock_tree.pll2.q_mhz * HZ_PER_MHZ;
} else if (clksel == RCC_D2CCIP2R_USARTSEL_PLL3Q) {
case RCC_D2CCIP2R_USARTSEL_PLL3Q:
return rcc_clock_tree.pll3.q_mhz * HZ_PER_MHZ;
} else if (clksel == RCC_D2CCIP2R_USARTSEL_HSI) {
case RCC_D2CCIP2R_USARTSEL_HSI:
return RCC_HSI_BASE_FREQUENCY;
} else {
return 0U;
case RCC_D2CCIP2R_USARTSEL_CSI:
return 4000000;
case RCC_D2CCIP2R_USARTSEL_LSE:
return 32768;
}
cm3_assert_not_reached();
}
uint32_t rcc_get_timer_clk_freq(uint32_t timer __attribute__((unused)))