Lattice MachXO2 Slave SPI FPGA Manager support
Subsystems (2)
v4 cover Lattice MachXO2 Slave SPI FPGA Manager support
Hi all,
this series adds support for the Lattice MachXO2 FPGA chip, programmed over Slave SPI.
Tested on my raspberry pi3 + bugblat's pif2 fpga hat.
Changes from v1:
* fixed all the warnings pointed out by 'checkpatch --strict' and Alan Tull
Changes from v2:
* convert to BIT() macro and spi_message_init() / trans.delay_usecs
Changes in v3;
* loop unroll machxo2_write() and collate writes in a single spi_sync()
Paolo Pisati (2):
dt: bindings: fpga: add lattice machxo2 slave spi binding description
fpga: lattice machxo2: Add Lattice MachXO2 support
.../bindings/fpga/lattice-machxo2-spi.txt | 29 ++ drivers/fpga/Kconfig | 7 + drivers/fpga/Makefile | 1 + drivers/fpga/machxo2-spi.c | 298 +++++++++++++++++++++ 4 files changed, 335 insertions(+) create mode 100644 Documentation/devicetree/bindings/fpga/lattice-machxo2-spi.txt create mode 100644 drivers/fpga/machxo2-spi.c
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PATCH v4 1/2 dt: bindings: fpga: add lattice machxo2 slave spi binding description
Add dt binding documentation details for Lattice MachXO2 FPGA configuration over Slave SPI interface.
--- .../bindings/fpga/lattice-machxo2-spi.txt | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/devicetree/bindings/fpga/lattice-machxo2-spi.txt
Documentation/devicetree/bindings/fpga/lattice-machxo2-spi.txt new file +29 -0
@@ -0,0 +1,29 @@ +Lattice MachXO2 Slave SPI FPGA Manager + +Lattice MachXO2 FPGAs support a method of loading the bitstream over +'slave SPI' interface. + +See 'MachXO2ProgrammingandConfigurationUsageGuide.pdf' on www.latticesemi.com + +Required properties: +- compatible: should contain "lattice,machxo2-slave-spi" +- reg: spi chip select of the FPGA + +Example for full FPGA configuration: + + fpga-region0 { + compatible = "fpga-region"; + fpga-mgr = <&fpga_mgr_spi>; + #address-cells = <0x1>; + #size-cells = <0x1>; + }; + + spi1: spi@2000 { + ... + + fpga_mgr_spi: fpga-mgr@0 { + compatible = "lattice,machxo2-slave-spi"; + spi-max-frequency = <60000000>; + reg = <0>; + }; + };
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PATCH v4 2/2 fpga: lattice machxo2: Add Lattice MachXO2 support
In reply to Paolo PisatiThis patch adds support to the FPGA manager for programming MachXO2 device’s internal flash memory, via slave SPI.
--- drivers/fpga/Kconfig | 7 ++ drivers/fpga/Makefile | 1 + drivers/fpga/machxo2-spi.c | 298 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 306 insertions(+) create mode 100644 drivers/fpga/machxo2-spi.c
drivers/fpga/Kconfig +7 -0
@@ -26,6 +26,13 @@ config FPGA_MGR_ICE40_SPI help FPGA manager driver support for Lattice iCE40 FPGAs over SPI. +config FPGA_MGR_MACHXO2_SPI + tristate "Lattice MachXO2 SPI" + depends on SPI + help + FPGA manager driver support for Lattice MachXO2 configuration + over slave SPI interface. + config FPGA_MGR_SOCFPGA tristate "Altera SOCFPGA FPGA Manager" depends on ARCH_SOCFPGA || COMPILE_TEST
drivers/fpga/Makefile +1 -0
@@ -7,6 +7,7 @@ obj-$(CONFIG_FPGA) += fpga-mgr.o # FPGA Manager Drivers obj-$(CONFIG_FPGA_MGR_ICE40_SPI) += ice40-spi.o +obj-$(CONFIG_FPGA_MGR_MACHXO2_SPI) += machxo2-spi.o obj-$(CONFIG_FPGA_MGR_SOCFPGA) += socfpga.o obj-$(CONFIG_FPGA_MGR_SOCFPGA_A10) += socfpga-a10.o obj-$(CONFIG_FPGA_MGR_TS73XX) += ts73xx-fpga.o
drivers/fpga/machxo2-spi.c new file +298 -0
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