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    • Stefan Roese's avatar
      arm: socfpga: Add DT support for SoCFPGA and add socfpga_socrates target · 51c580c6
      Stefan Roese authored
      This patch includes the latest DT sources for socfpga from the current
      Linux kernel. And enables CONFIG_OF_CONTROL for the new build target
      "socfpga_socrates" (the EBV SoCrates board) to make use of this new DT
      support.
      
      Until this patch, the only SoCFPGA U-Boot target in mainline is
      "socfpga_cyclone5". This build target is not (yet) changed to support
      DT. So nothing changes for this target. Even though the long-term
      goal should be to move all SoCFPGA targets over to DT.
      
      One of the reasons to enable DT support in SoCFPGA is, that I need to
      support multiple different SPI controllers for this platform. This is
      the QSPI Cadence controller and the Designware SPI master controller.
      Both are implemented in the SoCFPGA. And enabling both controllers is
      only possible by using the new driver model (DM). The DM SPI code
      only supports DT based probing. So it was easier to move SoCFPGA to
      DT than to add the (deprecated) platform-data based probing to the
      DM SPI suport.
      
      Note that the image with the dtb embedded is u-boot-dtb.img. This needs
      to be used now for those DT enabled boards instead of u-boot.img.
      Signed-off-by: default avatarStefan Roese <sr@denx.de>
      Cc: Marek Vasut <marex@denx.de>
      Cc: Chin Liang See <clsee@altera.com>
      Cc: Dinh Nguyen <dinguyen@altera.com>
      Cc: Vince Bridgers <vbridger@altera.com>
      Cc: Albert Aribaud <albert.u.boot@aribaud.net>
      Cc: Pavel Machek <pavel@denx.de>
      Cc: Simon Glass <sjg@chromium.org>
      51c580c6