1. 28 1月, 2020 2 次提交
    • B
      dm: spi: Check cs number before accessing slaves · 7bacce52
      Bin Meng 提交于
      Add chip select number check in spi_find_chip_select().
      Signed-off-by: NBin Meng <bmeng.cn@gmail.com>
      Tested-by: Jagan Teki <jagan@amarulasolutions.com> # SoPine
      7bacce52
    • M
      spi: nxp_fspi: new driver for the FlexSPI controller · 383fded7
      Michael Walle 提交于
      This is a port of the kernel's spi-nxp-fspi driver. It uses the new
      spi-mem interface and does not expose the more generic spi-xfer
      interface. The source was taken from the v5.3-rc3 tag.
      
      The port was straightforward:
       - remove the interrupt handling and the completion by busy polling the
         controller
       - remove locks
       - move the setup of the memory windows into claim_bus()
       - move the setup of the speed into set_speed()
       - port the device tree bindings from the original fspi_probe() to
         ofdata_to_platdata()
      
      There were only some style change fixes, no change in any logic. For
      example, there are busy loops where the return code is not handled
      correctly, eg. only prints a warning with WARN_ON(). This port
      intentionally left most functions unchanged to ease future bugfixes.
      
      This was tested on a custom LS1028A board. Because the LS1028A doesn't
      have proper clock framework support, changing the clock speed was not
      tested. This also means that it is not possible to change the SPI
      speed on LS1028A for now (neither is it possible in the linux driver).
      Signed-off-by: NMichael Walle <michael@walle.cc>
      Reviewed-by: NJagan Teki <jagan@amarulasolutions.com>
      Tested-by: NKuldeep Singh <kuldeep.singh@nxp.com>
      383fded7
  2. 27 1月, 2020 11 次提交
  3. 26 1月, 2020 27 次提交