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Lower default flash speed. 

/ 6 leads to ~40mhz. 2M and 4M have a max 0x03 read speed of 60mhz.
If the divisor is / 4 then the speed is just over 60mhz.

Fixes #4377
This commit is contained in:
Scott Shawcroft 2021-03-12 11:06:39 -08:00
parent 24f4d981bd
commit aec03a409f
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1 changed files with 1 additions and 1 deletions
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ports/raspberrypi/Makefile
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@ -234,7 +234,7 @@ SRC_COMMON_HAL_SHARED_MODULE_EXPANDED = $(sort $(SRC_COMMON_HAL_EXPANDED) $(SRC_
SRC_S = supervisor/$(CHIP_FAMILY)_cpu.s
BOOT2_S_UPPER ?= sdk/src/rp2_common/boot_stage2/boot2_generic_03h.S
BOOT2_S_CFLAGS ?= -DPICO_FLASH_SPI_CLKDIV=2
BOOT2_S_CFLAGS ?= -DPICO_FLASH_SPI_CLKDIV=6
SRC_S_UPPER = sdk/src/rp2_common/hardware_divider/divider.S \
sdk/src/rp2_common/hardware_irq/irq_handler_chain.S \
sdk/src/rp2_common/pico_bit_ops/bit_ops_aeabi.S \