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hw/misc/stm32l4x5_rcc: Add an internal clock multiplexer object

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This object is used to represent every multiplexer in the clock tree as
well as every clock output, every presecaler, frequency multiplier, etc.
This allows to use a generic approach for every component of the clock tree
(except the PLLs).

The migration handling is based on hw/misc/zynq_sclr.c.
Three phase reset will be handled in a later commit.

Signed-off-by: Arnaud Minier <arnaud.minier@telecom-paris.fr>
Signed-off-by: Inès Varhol <ines.varhol@telecom-paris.fr>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20240303140643.81957-3-arnaud.minier@telecom-paris.fr
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Arnaud Minier 2024-03-03 15:06:37 +01:00 • committed by Peter Maydell
parent d6b55a0fe9
commit ec7d83acbd
4 changed files with 313 additions and 0 deletions
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29
include/hw/misc/stm32l4x5_rcc_internals.h
View file

@ -21,6 +21,8 @@
#include "hw/registerfields.h"
#include "hw/misc/stm32l4x5_rcc.h"
#define TYPE_RCC_CLOCK_MUX "stm32l4x5-rcc-clock-mux"
OBJECT_DECLARE_SIMPLE_TYPE(RccClockMuxState, RCC_CLOCK_MUX)
/* Register map */
REG32(CR, 0x00)
@ -283,4 +285,31 @@ REG32(CSR, 0x94)
R_CSR_FWRSTF_MASK | \
R_CSR_LSIRDY_MASK)
typedef enum RccClockMuxSource {
RCC_CLOCK_MUX_SRC_GND = 0,
RCC_CLOCK_MUX_SRC_HSI,
RCC_CLOCK_MUX_SRC_HSE,
RCC_CLOCK_MUX_SRC_MSI,
RCC_CLOCK_MUX_SRC_LSI,
RCC_CLOCK_MUX_SRC_LSE,
RCC_CLOCK_MUX_SRC_SAI1_EXTCLK,
RCC_CLOCK_MUX_SRC_SAI2_EXTCLK,
RCC_CLOCK_MUX_SRC_PLL,
RCC_CLOCK_MUX_SRC_PLLSAI1,
RCC_CLOCK_MUX_SRC_PLLSAI2,
RCC_CLOCK_MUX_SRC_PLLSAI3,
RCC_CLOCK_MUX_SRC_PLL48M1,
RCC_CLOCK_MUX_SRC_PLL48M2,
RCC_CLOCK_MUX_SRC_PLLADC1,
RCC_CLOCK_MUX_SRC_PLLADC2,
RCC_CLOCK_MUX_SRC_SYSCLK,
RCC_CLOCK_MUX_SRC_HCLK,
RCC_CLOCK_MUX_SRC_PCLK1,
RCC_CLOCK_MUX_SRC_PCLK2,
RCC_CLOCK_MUX_SRC_HSE_OVER_32,
RCC_CLOCK_MUX_SRC_LCD_AND_RTC_COMMON,
RCC_CLOCK_MUX_SRC_NUMBER,
} RccClockMuxSource;
#endif /* HW_STM32L4X5_RCC_INTERNALS_H */