ARC: vdk: Fix support of UIO

MotherBoard section has its "ranges" set to 0xE000_0000-0xF000_0000.
But UIO node maps 4 different areas in different memory locations
and all outside MB's ranges.

That obviously breaks UIO mappings in runtime.

Cc: Ruud Derwig <rderwig@synopsys.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

1 files changed, 13 insertions, 7 deletions

diff --git a/arch/arc/boot/dts/vdk_axs10x_mb.dtsi b/arch/arc/boot/dts/vdk_axs10x_mb.dtsi
index f0df59b23e21..459fc656b759 100644
--- a/arch/arc/boot/dts/vdk_axs10x_mb.dtsi
+++ b/arch/arc/boot/dts/vdk_axs10x_mb.dtsi
@@ -112,13 +112,19 @@
                         interrupts = <7>;
                         bus-width = <4>;
                 };
+        };
 
-                /* Embedded Vision subsystem UIO mappings; only relevant for EV VDK */
-                uio_ev: uio@0xD0000000 {
-                        compatible = "generic-uio";
-                        reg = <0xD0000000 0x2000 0xD1000000 0x2000 0x90000000 0x10000000 0xC0000000 0x10000000>;
-                        reg-names = "ev_gsa", "ev_ctrl", "ev_shared_mem", "ev_code_mem";
-                        interrupts = <23>;
-                };
+        /*
+         * Embedded Vision subsystem UIO mappings; only relevant for EV VDK
+         *
+         * This node is intentionally put outside of MB above becase
+         * it maps areas outside of MB's 0xEz-0xFz.
+         */
+        uio_ev: uio@0xD0000000 {
+                compatible = "generic-uio";
+                reg = <0xD0000000 0x2000 0xD1000000 0x2000 0x90000000 0x10000000 0xC0000000 0x10000000>;
+                reg-names = "ev_gsa", "ev_ctrl", "ev_shared_mem", "ev_code_mem";
+                interrupt-parent = <&mb_intc>;
+                interrupts = <23>;
         };
 };