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imxrt: FlexSPI allow RWW

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Peter van der Perk 2024-12-24 13:46:44 +01:00 committed by Xiang Xiao
parent 2886fddc0f
commit 430c79ff89
4 changed files with 92 additions and 0 deletions
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16
arch/arm/src/imxrt/Kconfig
View file

@ -1871,12 +1871,28 @@ menuconfig IMXRT_FLEXSPI1
default n
select IMXRT_FLEXSPI
menuconfig IMXRT_FLEXSPI1_XIP
bool "FLEXSPI1 is used for XIP"
default n
depends on IMXRT_FLEXSPI1
---help---
FlexSPI1 is used as XIP thus already
initialized by the bootloader
menuconfig IMXRT_FLEXSPI2
bool "FLEXSPI2"
default n
select IMXRT_FLEXSPI
depends on IMXRT_HAVE_FLEXSPI2
menuconfig IMXRT_FLEXSPI2_XIP
bool "FLEXSPI2 is used for XIP"
default n
depends on IMXRT_FLEXSPI2
---help---
FlexSPI2 is used as XIP thus already
initialized by the bootloader
endmenu # FLEXSPI Peripherals
menu "ADC Peripherals"

57
arch/arm/src/imxrt/imxrt_flexspi.c
View file

@ -83,6 +83,8 @@ static int imxrt_flexspi_lock(struct flexspi_dev_s *dev, bool lock);
static int imxrt_flexspi_transfer_blocking(struct flexspi_dev_s *dev,
struct flexspi_transfer_s *xfer);
static void imxrt_flexspi_software_reset(struct flexspi_dev_s *dev);
static void imxrt_flexspi_configure_prefetch(struct flexspi_dev_s *dev,
bool enable);
static void imxrt_flexspi_update_lut(struct flexspi_dev_s *dev,
uint32_t index,
const uint32_t *cmd,
@ -102,6 +104,7 @@ static const struct flexspi_ops_s g_flexspi0ops =
.lock = imxrt_flexspi_lock,
.transfer_blocking = imxrt_flexspi_transfer_blocking,
.software_reset = imxrt_flexspi_software_reset,
.configure_prefetch = imxrt_flexspi_configure_prefetch,
.update_lut = imxrt_flexspi_update_lut,
.set_device_config = imxrt_flexspi_set_device_config,
};
@ -118,6 +121,9 @@ static struct imxrt_flexspidev_s g_flexspi0dev =
},
.base = (struct flexspi_type_s *)IMXRT_FLEXSPIC_BASE,
.lock = NXMUTEX_INITIALIZER,
#ifdef CONFIG_IMXRT_FLEXSPI1_XIP
.initialized = true,
#endif
};
#endif
@ -131,6 +137,9 @@ static struct imxrt_flexspidev_s g_flexspi1dev =
.ops = &g_flexspi0ops,
},
.base = (struct flexspi_type_s *) IMXRT_FLEXSPI2C_BASE,
#ifdef CONFIG_IMXRT_FLEXSPI2_XIP
.initialized = true,
#endif
};
#endif
@ -330,6 +339,31 @@ static inline void imxrt_flexspi_software_reset_private(
}
}
/* Configure FLEXSPI preftech.
*
* This function enables/disabled the prefetcher
* Which is needed to do RWW see NXP AN12564
*
* @param base FLEXSPI peripheral base address.
*/
static inline void imxrt_flexspi_configure_prefetch_private(
struct flexspi_type_s *base, bool enable)
{
uint32_t config_value = base->AHBCR;
if (enable)
{
config_value |= FLEXSPI_AHBCR_PREFETCHEN(1);
}
else
{
config_value &= ~FLEXSPI_AHBCR_PREFETCHEN(1);
}
base->AHBCR = config_value;
}
/* Returns whether the bus is idle.
*
* @param base FLEXSPI peripheral base address.
@ -1173,6 +1207,29 @@ static void imxrt_flexspi_software_reset(struct flexspi_dev_s *dev)
imxrt_flexspi_software_reset_private(priv->base);
}
/****************************************************************************
* Name: imxrt_flexspi_configure_prefetch
*
* Description:
* Configures prefetch
*
* Input Parameters:
* dev - Device-specific state data
* enable - Enable prefetch
*
* Returned Value:
* None
*
****************************************************************************/
static void imxrt_flexspi_configure_prefetch(struct flexspi_dev_s *dev,
bool enable)
{
struct imxrt_flexspidev_s *priv = (struct imxrt_flexspidev_s *)dev;
imxrt_flexspi_configure_prefetch_private(priv->base, enable);
}
/****************************************************************************
* Name: imxrt_flexspi_update_lut
*

18
arch/arm/src/imxrt/imxrt_flexspi.h
View file

@ -127,6 +127,23 @@
#define FLEXSPI_TRANSFER(d,x) (d)->ops->transfer_blocking(d,x)
/****************************************************************************
* Name: FLEXSPI_CONFIGURE_PREFTECH
*
* Description:
* Enable / disable prefetch
*
* Input Parameters:
* dev - Device-specific state data
* enable - Enable prefetch
*
* Returned Value:
* none
*
****************************************************************************/
#define FLEXSPI_CONFIGURE_PREFETCH(d,e) (d)->ops->configure_prefetch(d,e)
/****************************************************************************
* Name: FLEXSPI_SOFTWARE_RESET
*
@ -508,6 +525,7 @@ struct flexspi_ops_s
int (*transfer_blocking)(struct flexspi_dev_s *dev,
struct flexspi_transfer_s *xfer);
void (*software_reset)(struct flexspi_dev_s *dev);
void (*configure_prefetch)(struct flexspi_dev_s *dev, bool enable);
void (*update_lut)(struct flexspi_dev_s *dev,
uint32_t index, const uint32_t *cmd,
uint32_t count);

1
arch/arm/src/imxrt/imxrt_periphclks.h
View file

@ -259,6 +259,7 @@
#define imxrt_clockrun_flexram() imxrt_periphclk_configure(CCM_CCGR_FLEXRAM, CCM_CG_RUN)
#ifndef CONFIG_ARCH_FAMILY_IMXRT117x
# define imxrt_clockrun_flexspi() imxrt_periphclk_configure(CCM_CCGR_FLEXSPI, CCM_CG_RUN)
# define imxrt_clockrun_flexspi2() imxrt_periphclk_configure(CCM_CCGR_FLEXSPI2, CCM_CG_RUN)
#else
# define imxrt_clockrun_flexspi() imxrt_periphclk_configure(CCM_CCGR_FLEXSPI1, CCM_CG_RUN)
# define imxrt_clockrun_flexspi2() imxrt_periphclk_configure(CCM_CCGR_FLEXSPI2, CCM_CG_RUN)