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2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-01-24spi: kirkwood_spi: implement workaround for FE-9144572Chris Packham
Erratum NO. FE-9144572: The device SPI interface supports frequencies of up to 50 MHz. However, due to this erratum, when the device core clock is 250 MHz and the SPI interfaces is configured for 50MHz SPI clock and CPOL=CPHA=1 there might occur data corruption on reads from the SPI device. Implement the workaround by setting the TMISO_SAMPLE value to 0x2 in the timing1 register. Signed-off-by: Chris Packham <judge.packham@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Jagan Teki <jagan@openedev.com>
2016-11-18spi: kirkwood_spi: implement mvebu_spi_set_mode()Chris Packham
Set the appropriate bits in the interface config register based on the SPI_ mode flags. Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Jagan Teki <jteki@openedev.com> Signed-off-by: Chris Packham <judge.packham@gmail.com>
2016-04-06spi: kirkwood_spi: Add support for multiple chip-selects on MVEBUStefan Roese
Currently only chip-select 0 is supported by the kirkwood SPI driver. The Armada XP / 38x SoCs also use this driver and support multiple chip selects. This patch adds support for multiple CS on MVEBU. The register definitions are restructured a bit with this patch. Grouping them to the corresponding registers. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Luka Perkov <luka.perkov@sartura.hr> Reviewed-by: Jagan Teki <jteki@openedev.com>
2016-03-24arm: mvebu: spi.h: Add registers for direct write accessStefan Roese
The direct write config register is needed for SPI direct write mode configuration. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Luka Perkov <luka.perkov@sartura.hr> Signed-off-by: Stefan Roese <sr@denx.de>
2014-10-23arm: marvell: Move arch-kirkwood/spi.h to arch-mvebu/spi.hStefan Roese
This move makes it possible to use this kirkwood SPI driver from other MVEBU platforms as well. This will be used by the upcoming Armada XP support. Signed-off-by: Stefan Roese <sr@denx.de> Reviewed-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com> Tested-by: Luka Perkov <luka@openwrt.org> Acked-by: Prafulla Wadaskar <prafulla@marvell.com>