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  5. 28 Nov, 2016 1 commit
    • mario.six@gdsys.cc's avatar
      linux/compat.h: Properly implement ndelay fallback · ca388143
      mario.six@gdsys.cc authored
      Commit c68c62 ("i2c: mvtwsi: Make delay times frequency-dependent")
      extensively used the ndelay function with a calculated parameter
      which is dependant on the configured frequency of the I2C bus. If
      standard speed is employed, the parameter is usually 10000 (10000ns
      period length for 100kHz frequency).
      
      But, since the arm architecture does not implement a proper version of
      ndelay, the fallback default from include/linux/compat.h is used,
      which defines every ndelay as udelay(1). This causes problems for
      slower speeds on arm, since the delay time is now 9us too short for
      the desired frequency, which leads to random failures of the I2C
      interface.
      
      To remedy this, we implement a proper, parameter-aware ndelay fallback
      for architectures that don't implement a real ndelay function.
      Reported-By: default avatarJason Brown <Jason.brown@apcon.com>
      To: Tom Rini <trini@konsulko.com>
      To: Heiko Schocher <hs@denx.de>
      Signed-off-by: default avatarMario Six <mario.six@gdsys.cc>
      ca388143
  6. 18 Nov, 2016 1 commit
    • Jagan Teki's avatar
      sf: Adopt flash table INFO macro from Linux · f790ca7c
      Jagan Teki authored
      INFO macro make flash table entries more adjustable like
      adding new flash_info attributes, update ID length bytes
      and so on and more over it will sync to Linux way of defining
      flash_info attributes.
      
      - Add JEDEC_ID
      - Add JEDEC_EXT macro
      - Add JEDEC_MFR
      - spi_flash_params => spi_flash_info
      - params => info
      
      Cc: Simon Glass <sjg@chromium.org>
      Cc: Bin Meng <bmeng.cn@gmail.com>
      Cc: York Sun <york.sun@nxp.com>
      Cc: Vignesh R <vigneshr@ti.com>
      Cc: Mugunthan V N <mugunthanvnm@ti.com>
      Cc: Michal Simek <michal.simek@xilinx.com>
      Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
      Reviewed-by: default avatarJagan Teki <jagan@openedev.com>
      Tested-by: default avatarJagan Teki <jagan@openedev.com>
      Signed-off-by: default avatarJagan Teki <jagan@openedev.com>
      f790ca7c
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