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spi_flash: refactor the spi_flash clock configuration, and add support for esp32c2

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This commit is contained in:
Cao Sen Miao
2022-04-12 16:37:40 +08:00
parent 68d4c47b7e
commit 4418a855ba
57 changed files with 871 additions and 547 deletions
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28
components/hal/esp32c2/include/hal/gpspi_flash_ll.h
View File

@@ -31,14 +31,7 @@ extern "C" {
#define gpspi_flash_ll_hw_get_id(dev) ( ((dev) == (void*)&GPSPI2) ? SPI2_HOST : -1 )
typedef typeof(GPSPI2.clock) gpspi_flash_ll_clock_reg_t;
//Supported clock register values
#define GPSPI_FLASH_LL_CLKREG_VAL_5MHZ ((gpspi_flash_ll_clock_reg_t){.val=0x0000F1CF}) ///< Clock set to 5 MHz
#define GPSPI_FLASH_LL_CLKREG_VAL_10MHZ ((gpspi_flash_ll_clock_reg_t){.val=0x000070C7}) ///< Clock set to 10 MHz
#define GPSPI_FLASH_LL_CLKREG_VAL_20MHZ ((gpspi_flash_ll_clock_reg_t){.val=0x00003043}) ///< Clock set to 20 MHz
#define GPSPI_FLASH_LL_CLKREG_VAL_26MHZ ((gpspi_flash_ll_clock_reg_t){.val=0x00002002}) ///< Clock set to 26 MHz
#define GPSPI_FLASH_LL_CLKREG_VAL_40MHZ ((gpspi_flash_ll_clock_reg_t){.val=0x00001001}) ///< Clock set to 40 MHz
#define GPSPI_FLASH_LL_CLKREG_VAL_80MHZ ((gpspi_flash_ll_clock_reg_t){.val=0x80000000}) ///< Clock set to 80 MHz
#define GPSPI_FLASH_LL_PERIPHERAL_FREQUENCY_MHZ (40)
/*------------------------------------------------------------------------------
* Control
@@ -391,6 +384,25 @@ static inline void gpspi_flash_ll_set_cs_setup(spi_dev_t *dev, uint32_t cs_setup
dev->user1.cs_setup_time = cs_setup_time - 1;
}
/**
* Calculate spi_flash clock frequency division parameters for register.
*
* @param clkdiv frequency division factor
*
* @return Register setting for the given clock division factor.
*/
static inline uint32_t gpspi_flash_ll_calculate_clock_reg(uint8_t clkdiv)
{
uint32_t div_parameter;
// See comments of `clock` in `spi_struct.h`
if (clkdiv == 1) {
div_parameter = (1 << 31);
} else {
div_parameter = ((clkdiv - 1) | (((clkdiv/2 - 1) & 0xff) << 6 ) | (((clkdiv - 1) & 0xff) << 12));
}
return div_parameter;
}
#ifdef __cplusplus
}
#endif

12
components/hal/esp32c2/include/hal/spi_flash_ll.h
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@@ -21,14 +21,10 @@
extern "C" {
#endif
// For esp32s2, spimem is equivalent to traditional spi peripherals found
// in esp32. Let the spi flash clock reg definitions reflect this.
#define SPI_FLASH_LL_CLKREG_VAL_5MHZ {.spimem=SPIMEM_FLASH_LL_CLKREG_VAL_5MHZ}
#define SPI_FLASH_LL_CLKREG_VAL_10MHZ {.spimem=SPIMEM_FLASH_LL_CLKREG_VAL_10MHZ}
#define SPI_FLASH_LL_CLKREG_VAL_20MHZ {.spimem=SPIMEM_FLASH_LL_CLKREG_VAL_20MHZ}
#define SPI_FLASH_LL_CLKREG_VAL_26MHZ {.spimem=SPIMEM_FLASH_LL_CLKREG_VAL_26MHZ}
#define SPI_FLASH_LL_CLKREG_VAL_40MHZ {.spimem=SPIMEM_FLASH_LL_CLKREG_VAL_40MHZ}
#define SPI_FLASH_LL_CLKREG_VAL_80MHZ {.spimem=SPIMEM_FLASH_LL_CLKREG_VAL_80MHZ}
#define spi_flash_ll_calculate_clock_reg(host_id, clock_div) (((host_id)<=SPI1_HOST) ? spimem_flash_ll_calculate_clock_reg(clock_div) \
: gpspi_flash_ll_calculate_clock_reg(clock_div))
#define spi_flash_ll_get_source_clock_freq_mhz(host_id) (((host_id)<=SPI1_HOST) ? spimem_flash_ll_get_source_freq_mhz() : GPSPI_FLASH_LL_PERIPHERAL_FREQUENCY_MHZ)
#define spi_flash_ll_get_hw(host_id) (((host_id)<=SPI1_HOST ? (spi_dev_t*) spimem_flash_ll_get_hw(host_id) \
: gpspi_flash_ll_get_hw(host_id)))

47
components/hal/esp32c2/include/hal/spimem_flash_ll.h
View File

@@ -30,15 +30,9 @@ extern "C" {
#define spimem_flash_ll_get_hw(host_id) (((host_id)==SPI1_HOST ? &SPIMEM1 : NULL ))
#define spimem_flash_ll_hw_get_id(dev) ((dev) == (void*)&SPIMEM1? SPI1_HOST: -1)
typedef typeof(SPIMEM1.clock) spimem_flash_ll_clock_reg_t;
#define SPIMEM_FLASH_LL_PERIPHERAL_FREQUENCY_MHZ (60)
//Supported clock register values
#define SPIMEM_FLASH_LL_CLKREG_VAL_5MHZ ((spimem_flash_ll_clock_reg_t){.val=0x000F070F}) ///< Clock set to 5 MHz
#define SPIMEM_FLASH_LL_CLKREG_VAL_10MHZ ((spimem_flash_ll_clock_reg_t){.val=0x00070307}) ///< Clock set to 10 MHz
#define SPIMEM_FLASH_LL_CLKREG_VAL_20MHZ ((spimem_flash_ll_clock_reg_t){.val=0x00030103}) ///< Clock set to 20 MHz
#define SPIMEM_FLASH_LL_CLKREG_VAL_26MHZ ((spimem_flash_ll_clock_reg_t){.val=0x00020002}) ///< Clock set to 26 MHz
#define SPIMEM_FLASH_LL_CLKREG_VAL_40MHZ ((spimem_flash_ll_clock_reg_t){.val=0x00010001}) ///< Clock set to 40 MHz
#define SPIMEM_FLASH_LL_CLKREG_VAL_80MHZ ((spimem_flash_ll_clock_reg_t){.val=0x80000000}) ///< Clock set to 80 MHz
typedef typeof(SPIMEM1.clock.val) spimem_flash_ll_clock_reg_t;
/*------------------------------------------------------------------------------
* Control
@@ -412,7 +406,7 @@ static inline void spimem_flash_ll_set_read_mode(spi_mem_dev_t *dev, esp_flash_i
*/
static inline void spimem_flash_ll_set_clock(spi_mem_dev_t *dev, spimem_flash_ll_clock_reg_t *clock_val)
{
dev->clock = *clock_val;
dev->clock.val = *clock_val;
}
/**
@@ -547,6 +541,41 @@ static inline void spimem_flash_ll_set_cs_setup(spi_mem_dev_t *dev, uint32_t cs_
dev->ctrl2.cs_setup_time = cs_setup_time - 1;
}
/**
* Get the spi flash source clock frequency. Used for calculating
* the divider parameters.
*
* @param None
*
* @return the frequency of spi flash clock source.(MHz)
*/
static inline uint8_t spimem_flash_ll_get_source_freq_mhz(void)
{
// Default is PLL120M, this is hard-coded.
// In the future, we can get the CPU clock source by calling interface.
// When PLL120M is selected, mspi clock is 60MHz.
return SPIMEM_FLASH_LL_PERIPHERAL_FREQUENCY_MHZ;
}
/**
* Calculate spi_flash clock frequency division parameters for register.
*
* @param clkdiv frequency division factor
*
* @return Register setting for the given clock division factor.
*/
static inline uint32_t spimem_flash_ll_calculate_clock_reg(uint8_t clkdiv)
{
uint32_t div_parameter;
// See comments of `clock` in `spi_mem_struct.h`
if (clkdiv == 1) {
div_parameter = (1 << 31);
} else {
div_parameter = ((clkdiv - 1) | (((clkdiv - 1) / 2 & 0xff) << 8 ) | (((clkdiv - 1) & 0xff) << 16));
}
return div_parameter;
}
#ifdef __cplusplus
}
#endif