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authorAlan Tull <atull@opensource.altera.com>2016-11-01 14:14:30 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-11-10 17:03:36 +0100
commite5f8efa5c8bf86c1fa698551d54db8f6aee221fd (patch)
tree8be983f965df4d7f28d05285b8d8ee57041a8dee /drivers/fpga/Kconfig
parent0fa20cdfcc1f68847cdfc47824476301eedc8297 (diff)
downloadlinux-e5f8efa5c8bf86c1fa698551d54db8f6aee221fd.tar.bz2
ARM: socfpga: fpga bridge driver support
Supports Altera SOCFPGA bridges: * fpga2sdram * fpga2hps * hps2fpga * lwhps2fpga Allows enabling/disabling the bridges through the FPGA Bridge Framework API functions. The fpga2sdram driver only supports enabling and disabling of the ports that been configured early on. This is due to a hardware limitation where the read, write, and command ports on the fpga2sdram bridge can only be reconfigured while there are no transactions to the sdram, i.e. when running out of OCRAM before the kernel boots. Device tree property 'init-val' configures the driver to enable or disable the bridge during probe. If the property does not exist, the driver will leave the bridge in its current state. Signed-off-by: Alan Tull <atull@opensource.altera.com> Signed-off-by: Matthew Gerlach <mgerlach@altera.com> Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/fpga/Kconfig')
-rw-r--r--drivers/fpga/Kconfig7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig
index e0e1257e17e2..5605ad6a4e97 100644
--- a/drivers/fpga/Kconfig
+++ b/drivers/fpga/Kconfig
@@ -40,6 +40,13 @@ config FPGA_BRIDGE
Say Y here if you want to support bridges connected between host
processors and FPGAs or between FPGAs.
+config SOCFPGA_FPGA_BRIDGE
+ tristate "Altera SoCFPGA FPGA Bridges"
+ depends on ARCH_SOCFPGA && FPGA_BRIDGE
+ help
+ Say Y to enable drivers for FPGA bridges for Altera SOCFPGA
+ devices.
+
endif # FPGA
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