lkml.org 
[lkml]   [2022]   [Aug]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH v2 0/2] spi: stm32_qspi: use QSPI bus as 8 lines communication channel
Date
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.
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

\
 
 \ /
  Last update: 2022-08-10 11:33    [W:0.068 / U:0.280 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site