From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vladimir Oltean Subject: [PATCH v3 0/7] NXP DSPI bugfixes and support for LS1028A Date: Tue, 10 Mar 2020 14:55:35 +0200 Message-ID: <20200310125542.5939-1-olteanv@gmail.com> Cc: linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, shawnguo@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, devicetree@vger.kernel.org, eha@deif.com, angelo@sysam.it, andrew.smirnov@gmail.com, gustavo@embeddedor.com, weic@nvidia.com, mhosny@nvidia.com, michael@walle.cc, peng.ma@nxp.com To: broonie@kernel.org Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-spi.vger.kernel.org From: Vladimir Oltean This series addresses a few issues that were missed during the previous series "[PATCH 00/12] TCFQ to XSPI migration for NXP DSPI driver", on SoCs other than LS1021A and LS1043A. DMA mode has been completely broken by that series, and XSPI mode never worked on little-endian controllers. Then it introduces support for the LS1028A chip, whose compatible has recently been documented here: https://lore.kernel.org/linux-devicetree/20200218171418.18297-1-michael@walle.cc/ The device tree for the LS1028A SoC is extended with DMA channels definition, such that even though the default operating mode is XSPI, one can simply change DSPI_XSPI_MODE to DSPI_DMA_MODE in the devtype_data structure of the driver and use that instead. I don't expect the "fixes" patches to reach very far down the stable pipe, since there has been pretty heavy refactoring in this driver. For testing, benchmarking and debugging, the mikroBUS connector on the LS1028A-RDB is made available via spidev. Vladimir Oltean (7): spi: spi-fsl-dspi: Don't access reserved fields in SPI_MCR spi: spi-fsl-dspi: Avoid use-after-free in interrupt mode spi: spi-fsl-dspi: Fix little endian access to PUSHR CMD and TXDATA spi: spi-fsl-dspi: Fix bits-per-word acceleration in DMA mode spi: spi-fsl-dspi: Add support for LS1028A arm64: dts: ls1028a: Specify the DMA channels for the DSPI controllers arm64: dts: ls1028a-rdb: Add a spidev node for the mikroBUS .../boot/dts/freescale/fsl-ls1028a-rdb.dts | 14 ++ .../arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 6 + drivers/spi/spi-fsl-dspi.c | 188 +++++++++++------- 3 files changed, 134 insertions(+), 74 deletions(-) -- 2.17.1