From: Patrice Chotard <patrice.chotard@xxxxxxxxxxx> The goal of this series is to allow to use QSPI bus as a 8 lines communication channel for specific purpose. The QSPI block offers the possibility to communicate with 2 flashes in parrallel using the dual flash mode, 8 data lines are then used. Usage of DT parallel-memories property is needed to enable dual flash mode. The addition of the legacy transfer_one_message() spi callback is also needed as currently the stm32-qspi driver only supports spi_controller_mem_ops API. arch/arm/boot/dts/stm32mp15-pinctrl.dtsi | 50 +++++++---- arch/arm/boot/dts/stm32mp157c-ev1.dts | 12 ++- drivers/spi/spi-stm32-qspi.c | 103 +++++++++++++++++++++-- 3 files changed, 139 insertions(+), 26 deletions(-) -- 2.25.1
