Eric Lee / smarc-uboot

07 May, 2018

1 commit

  • 83d290c56   SPDX: Convert all of our single license tags to Linux Kernel style ... Browse Code »
    56

    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

    Tom Rini
     

11 May, 2017

1 commit

  • bd3767143   rockchip: spi: rk_spi: dynamically select an module input rate ... Browse Code »

    The original clock/bitrate selection code for the rk_spi driver was a
    bit limited, as it always selected a 99MHz input clock rate (which
    would allow for a maximum bitrate of 49.5MBit/s), but returned -EINVAL
    if a bitrate higher than 48MHz was requested.

    To give us better control over the bitrate (i.e. add more operating
    points, especially at "higher" bitrate---such as above 9MBit/s), we
    try to choose 4x the maximum frequency (clamped to 50MBit) from the
    DTS instead of 99MHz... for most use-cases this will yield a frequency
    of 198MHz, but is flexible to go beyond this in future configurations.

    This also rewrites the check to allow frequencies of up to half the
    SPI module rate as bitrates and then clamps to whatever the DTS allows
    as a maximum (board-specific) frequency and does away with the -EINVAL
    when trying to select a bitrate (for cases that exceeded the hard
    limit) and instead consistently clamps to the lower of the hard limit,
    the soft limit for the SPI bus (from the DTS) or the soft limit for
    the SPI slave device.

    This replaces
    "rockchip: spi: rk_spi: select 198MHz input to the SPI module for the RK3399"
    "rockchip: spi: rk_spi: improve clocking code for the RK3399"
    from earlier versions of this series.

    Signed-off-by: Philipp Tomsich

    Philipp Tomsich
     

03 Sep, 2015

1 commit