From 0b329c3dcef89043d6e4cb47d54973b19039bcbe Mon Sep 17 00:00:00 2001
From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Tue, 1 Jun 2021 10:41:35 +0200
Subject: [PATCH] tools/litex_json2dts: Add initial USB OHCI support.

---
 litex/tools/litex_json2dts.py | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/litex/tools/litex_json2dts.py b/litex/tools/litex_json2dts.py
index e5e9d0b40..32b4a2064 100755
--- a/litex/tools/litex_json2dts.py
+++ b/litex/tools/litex_json2dts.py
@@ -229,7 +229,21 @@ def generate_dts(d, initrd_start=None, initrd_size=None, polling=False):
     ethmac_rx_slots  = d["constants"]["ethmac_rx_slots"],
     ethmac_interrupt = "" if polling else "interrupts = <{}>;".format(d["constants"]["ethmac_interrupt"]))
 
-   # SPI Flash -------------------------------------------------------------------------------------
+    # USB OHCI -------------------------------------------------------------------------------------
+
+    if "usb_ohci_ctrl" in d["memories"]:
+        dts += """
+            usb0: mac@{usb_ohci_mem_base:x} {{
+                compatible = "generic-ohci";
+                reg = <0x{usb_ohci_mem_base:x} 0x1000>;
+                {usb_ohci_interrupt}
+                status = "okay";
+            }};
+""".format(
+    usb_ohci_mem_base  = d["memories"]["usb_ohci_ctrl"]["base"],
+    usb_ohci_interrupt = "" if polling else "interrupts = <{}>;".format(16)) # FIXME
+
+    # SPI Flash ------------------------------------------------------------------------------------
 
     if "spiflash" in d["csr_bases"]:
         aliases["spiflash"] = "litespiflash"