mimxrt/hal: Make flash clock frequency configurable.

Signed-off-by: "Kwabena W. Agyeman" <kwagyeman@live.com>
Infineon · Aug 15, 2023 · 00855ee · 00855ee
1 parent cb7e133
commit 00855ee
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Showing 3 changed files with 14 additions and 2 deletions.
diff --git a/ports/mimxrt/Makefile b/ports/mimxrt/Makefile
@@ -397,6 +397,10 @@ CFLAGS += \
  -DFSL_FEATURE_PHYKSZ8081_USE_RMII50M_MODE=1
 endif
 
+ifdef MICROPY_HW_FLASH_CLK
+ CFLAGS += -DMICROPY_HW_FLASH_CLK=$(MICROPY_HW_FLASH_CLK)
+endif
+
 CFLAGS += $(CFLAGS_EXTRA)
 
 MPY_CROSS_FLAGS += -march=armv7m

diff --git a/ports/mimxrt/hal/qspi_hyper_flash_config.c b/ports/mimxrt/hal/qspi_hyper_flash_config.c
@@ -22,6 +22,10 @@ __attribute__((section(".boot_hdr.conf")))
 #pragma location = ".boot_hdr.conf"
 #endif
 
+#ifndef MICROPY_HW_FLASH_CLK
+#define MICROPY_HW_FLASH_CLK kFlexSpiSerialClk_133MHz
+#endif
+
 const flexspi_nor_config_t qspiflash_config = {
  .memConfig =
  {
@@ -36,7 +40,7 @@ const flexspi_nor_config_t qspiflash_config = {
  (1u << kFlexSpiMiscOffset_DdrModeEnable) | (1u << kFlexSpiMiscOffset_WordAddressableEnable) |
  (1u << kFlexSpiMiscOffset_SafeConfigFreqEnable) | (1u << kFlexSpiMiscOffset_DiffClkEnable),
  .sflashPadType = kSerialFlash_8Pads,
- .serialClkFreq = kFlexSpiSerialClk_133MHz,
+ .serialClkFreq = MICROPY_HW_FLASH_CLK,
  .sflashA1Size = MICROPY_HW_FLASH_SIZE,
  .dataValidTime = {16u, 16u},
  .lookupTable =

diff --git a/ports/mimxrt/hal/qspi_nor_flash_config.c b/ports/mimxrt/hal/qspi_nor_flash_config.c
@@ -28,6 +28,10 @@ __attribute__((section(".boot_hdr.conf")))
 #define MICROPY_HW_FLASH_DQS kFlexSPIReadSampleClk_LoopbackFromDqsPad
 #endif
 
+#ifndef MICROPY_HW_FLASH_CLK
+#define MICROPY_HW_FLASH_CLK kFlexSpiSerialClk_100MHz
+#endif
+
 const flexspi_nor_config_t qspiflash_config = {
  .memConfig =
  {
@@ -48,7 +52,7 @@ const flexspi_nor_config_t qspiflash_config = {
  // Enable DDR mode, Wordaddassable, Safe configuration, Differential clock
  .deviceType = kFlexSpiDeviceType_SerialNOR,
  .sflashPadType = kSerialFlash_4Pads,
- .serialClkFreq = kFlexSpiSerialClk_100MHz,
+ .serialClkFreq = MICROPY_HW_FLASH_CLK,
  .sflashA1Size = MICROPY_HW_FLASH_SIZE,
  .lookupTable =
  {