MIPS: JZ4740: Probe OHCI platform device via DT

The DT fragment will select the ohci-platform driver, since that can
handle the JZ4740 OHCI just fine. While I don't have a JZ4740-based
board with anything connected to the USB host controller, I did test
the generic OHCI driver successfully on a JZ4770-based board.

The device is disabled by default; boards that want to use it can
override the "status" property. The mass-production Qi LB60 boards
don't use the USB host controller.

Signed-off-by: Maarten ter Huurne <maarten@treewalker.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Paul Cercueil <paul@crapouillou.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13104/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/arch/mips/boot/dts/ingenic/jz4740.dtsi b/arch/mips/boot/dts/ingenic/jz4740.dtsi
index 8b2437cd019f..4a9c8f2a72d6 100644
--- a/arch/mips/boot/dts/ingenic/jz4740.dtsi
+++ b/arch/mips/boot/dts/ingenic/jz4740.dtsi
@@ -65,4 +65,18 @@
                 clocks = <&ext>, <&cgu JZ4740_CLK_UART1>;
                 clock-names = "baud", "module";
         };
+
+        uhc: uhc@13030000 {
+                compatible = "ingenic,jz4740-ohci", "generic-ohci";
+                reg = <0x13030000 0x1000>;
+
+                clocks = <&cgu JZ4740_CLK_UHC>;
+                assigned-clocks = <&cgu JZ4740_CLK_UHC>;
+                assigned-clock-rates = <48000000>;
+
+                interrupt-parent = <&intc>;
+                interrupts = <3>;
+
+                status = "disabled";
+        };
 };