[PATCH v2 12/26] arm: dts: k3-am654: add needed regs to udmap nodes

[Bryan Brattlof]

Ethernet is one of a few IPs in U-Boot that depend on DMA to operate.
However there are a few missing registers ranges in the udmap nodes
need to properly setup DMA for the am65x.

A fix has been added to the Linux kernel[0] to add these ranges however
they have not made it to a Linux tag. To keep DMA operational until the
next DT sync from Linux, add these ranges to the *-u-boot.dtsi with a
note for our future selves.

[0] https://lore.kernel.org/r/20231213135138.929517-2-vigneshr@ti.com

Tested-by: Tom Rini <trini at konsulko.com>
Signed-off-by: Bryan Brattlof <bb at ti.com>
---
 arch/arm/dts/k3-am654-base-board-u-boot.dtsi | 34 ++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/arch/arm/dts/k3-am654-base-board-u-boot.dtsi b/arch/arm/dts/k3-am654-base-board-u-boot.dtsi
index a008af5b4a047..a24cb895e5578 100644
--- a/arch/arm/dts/k3-am654-base-board-u-boot.dtsi
+++ b/arch/arm/dts/k3-am654-base-board-u-boot.dtsi
@@ -252,3 +252,37 @@
 &mcu_r5fss0 {
 	ti,cluster-mode = <0>;
 };
+
+/*
+ * The DMA driver requires a few extra register ranges
+ * which are missing for the am65x. A patch has been
+ * sent and will be synced after the v6.8-rc1 linux
+ * tag is published
+ */
+&main_udmap {
+	reg = <0x0 0x31150000 0x0 0x100>,
+	      <0x0 0x34000000 0x0 0x100000>,
+	      <0x0 0x35000000 0x0 0x100000>,
+	      <0x0 0x30b00000 0x0 0x10000>,
+	      <0x0 0x30c00000 0x0 0x10000>,
+	      <0x0 0x30d00000 0x0 0x8000>;
+	reg-names = "gcfg", "rchanrt", "tchanrt",
+		    "tchan", "rchan", "rflow";
+};
+
+/*
+ * The DMA driver requires a few extra register ranges
+ * which are missing for the am65x. A patch has been
+ * sent and will be synced after the v6.8-rc1 linux
+ * tag is published
+ */
+&mcu_udmap {
+	reg = <0x0 0x285c0000 0x0 0x100>,
+	      <0x0 0x2a800000 0x0 0x40000>,
+	      <0x0 0x2aa00000 0x0 0x40000>,
+	      <0x0 0x284a0000 0x0 0x4000>,
+	      <0x0 0x284c0000 0x0 0x4000>,
+	      <0x0 0x28400000 0x0 0x2000>;
+	reg-names = "gcfg", "rchanrt", "tchanrt",
+		    "tchan", "rchan", "rflow";
+};
-- 
2.43.0