kc705: add SPI bus for memory card

This will be useful for SPI unit tests using a SD card as victim.

artiq/examples/master/device_db.py

@@ -137,6 +137,13 @@ device_db = {
         "class": "SPIMaster",
         "arguments": {"channel": 23}
     },
+    
+    "spi_mmc": { 
+        "type": "local",
+        "module": "artiq.coredevice.spi",
+        "class": "SPIMaster",
+        "arguments": {"channel": 26}
+    },
 
     "dac0": {
         "type": "local",
@@ -149,20 +156,20 @@ device_db = {
         "type": "local",
         "module": "artiq.coredevice.dds",
         "class": "DDSChannelAD9914",
-        "arguments": {"bus_channel": 26, "channel": 0},
+        "arguments": {"bus_channel": 27, "channel": 0},
         "comment": "Comments work in DDS panel as well"
     },
     "dds1": {
         "type": "local",
         "module": "artiq.coredevice.dds",
         "class": "DDSChannelAD9914",
-        "arguments": {"bus_channel": 26, "channel": 1}
+        "arguments": {"bus_channel": 27, "channel": 1}
     },
     "dds2": {
         "type": "local",
         "module": "artiq.coredevice.dds",
         "class": "DDSChannelAD9914",
-        "arguments": {"bus_channel": 26, "channel": 2}
+        "arguments": {"bus_channel": 27, "channel": 2}
     },
 
     "qc_q1_0": {

artiq/gateware/targets/kc705_dds.py

@@ -97,6 +97,16 @@ _ams101_dac = [
      )
 ]
 
+_sdcard_spi_33 = [
+  ("sdcard_spi_33", 0,
+        Subsignal("miso", Pins("AC20")),
+        Subsignal("clk", Pins("AB23")),
+        Subsignal("mosi", Pins("AB22")),
+        Subsignal("cs_n", Pins("AC21")),
+        IOStandard("LVCMOS33")
+  )
+]
+
 
 class _NIST_Ions(MiniSoC, AMPSoC):
     mem_map = {
@@ -131,6 +141,7 @@ class _NIST_Ions(MiniSoC, AMPSoC):
 
         self.platform.add_extension(_sma33_io)
         self.platform.add_extension(_ams101_dac)
+        self.platform.add_extension(_sdcard_spi_33)
 
         i2c = self.platform.request("i2c")
         self.submodules.i2c = gpio.GPIOTristate([i2c.scl, i2c.sda])
@@ -220,7 +231,12 @@ class NIST_CLOCK(_NIST_Ions):
             self.submodules += phy
             rtio_channels.append(rtio.Channel.from_phy(
                 phy, ofifo_depth=128, ififo_depth=128))
-
+            
+        phy = spi.SPIMaster(platform.request("sdcard_spi_33", 0))
+        self.submodules += phy
+        rtio_channels.append(rtio.Channel.from_phy(
+            phy, ofifo_depth=4, ififo_depth=4))
+        
         phy = dds.AD9914(platform.request("dds"), 11, onehot=True)
         self.submodules += phy
         rtio_channels.append(rtio.Channel.from_phy(phy,

conda/artiq-dev/meta.yaml

@@ -14,7 +14,7 @@ requirements:
   run:
     - python >=3.5.3,<3.6
     - setuptools 33.1.1
-    - migen 0.5.dev py_112+gitd8b55c7
+    - migen 0.5.dev py_117+gite826cb9
     - misoc 0.6.dev py_22+gite205c2ea
     - jesd204b 0.3
     - binutils-or1k-linux >=2.27

doc/manual/core_device.rst

@@ -71,19 +71,21 @@ With the CLOCK hardware, the TTL lines are mapped as follows:
 
 The board has RTIO SPI buses mapped as follows:
 
-+--------------+-------------+-------------+-----------+------------+
-| RTIO channel | CS_N        | MOSI        | MISO      | CLK        |
-+==============+=============+=============+===========+============+
-| 22           | AMS101_CS_N | AMS101_MOSI |           | AMS101_CLK |
-+--------------+-------------+-------------+-----------+------------+
-| 23           | SPI0_CS_N   | SPI0_MOSI   | SPI0_MISO | SPI0_CLK   |
-+--------------+-------------+-------------+-----------+------------+
-| 24           | SPI1_CS_N   | SPI1_MOSI   | SPI1_MISO | SPI1_CLK   |
-+--------------+-------------+-------------+-----------+------------+
-| 25           | SPI2_CS_N   | SPI2_MOSI   | SPI2_MISO | SPI2_CLK   |
-+--------------+-------------+-------------+-----------+------------+
++--------------+--------------+--------------+--------------+------------+
+| RTIO channel | CS_N         | MOSI         | MISO         | CLK        |
++==============+==============+==============+==============+============+
+| 22           | AMS101_CS_N  | AMS101_MOSI  |              | AMS101_CLK |
++--------------+--------------+--------------+--------------+------------+
+| 23           | SPI0_CS_N    | SPI0_MOSI    | SPI0_MISO    | SPI0_CLK   |
++--------------+--------------+--------------+--------------+------------+
+| 24           | SPI1_CS_N    | SPI1_MOSI    | SPI1_MISO    | SPI1_CLK   |
++--------------+--------------+--------------+--------------+------------+
+| 25           | SPI2_CS_N    | SPI2_MOSI    | SPI2_MISO    | SPI2_CLK   |
++--------------+--------------+--------------+--------------+------------+
+| 26           | MMC_SPI_CS_N | MMC_SPI_MOSI | MMC_SPI_MISO | MMC_SPI_CLK|
++--------------+--------------+--------------+--------------+------------+
 
-The DDS bus is on channel 26.
+The DDS bus is on channel 27.
 
 
 NIST QC2