Messages in this thread | | | From | <> | Subject | [PATCH 0/3] spi: stm32_qspi: use QSPI bus as 8 lines communication channel | Date | Mon, 8 Aug 2022 09:40:48 +0200 |
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From: Patrice Chotard <patrice.chotard@foss.st.com>
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. A new ST specific property need to be created to enable this 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.
Patrice Chotard (3): dt-bindings: spi: stm32: Add st,dual-flash property in st,stm32-qspi.yaml spi: stm32_qspi: Add transfer_one_message() spi callback ARM: dts: stm32: Create separate pinmux for qspi cs pin in stm32mp15-pinctrl.dtsi
.../bindings/spi/st,stm32-qspi.yaml | 8 ++ arch/arm/boot/dts/stm32mp15-pinctrl.dtsi | 50 +++++--- arch/arm/boot/dts/stm32mp157c-ev1.dts | 12 +- drivers/spi/spi-stm32-qspi.c | 111 ++++++++++++++++-- 4 files changed, 155 insertions(+), 26 deletions(-)
-- 2.25.1
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