[PATCH 4/5] arm64: dts: ti: k3-am64: Enable Mailbox nodes at the board level

[Andrew Davis]

Mailbox nodes defined in the top-level AM64x SoC dtsi files are incomplete
and may not be functional unless they are extended with a chosen interrupt
and connection to a remote processor.

As the remote processors depend on memory nodes which are only known at
the board integration level, these nodes should only be enabled when
provided with the above information.

Disable the Mailbox nodes in the dtsi files and only enable the ones that
are actually used on a given board.

Signed-off-by: Andrew Davis <afd@xxxxxx>
---
 arch/arm64/boot/dts/ti/k3-am64-main.dtsi      |  6 +++++
 .../boot/dts/ti/k3-am64-phycore-som.dtsi      | 24 -------------------
 arch/arm64/boot/dts/ti/k3-am642-evm.dts       | 18 +++++---------
 arch/arm64/boot/dts/ti/k3-am642-sk.dts        | 18 +++++---------
 4 files changed, 18 insertions(+), 48 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
index 5e8036f32d79..a474232fba0e 100644
--- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
@@ -676,6 +676,7 @@ mailbox0_cluster2: mailbox@29020000 {
 		#mbox-cells = <1>;
 		ti,mbox-num-users = <4>;
 		ti,mbox-num-fifos = <16>;
+		status = "disabled";
 	};
 
 	mailbox0_cluster3: mailbox@29030000 {
@@ -686,6 +687,7 @@ mailbox0_cluster3: mailbox@29030000 {
 		#mbox-cells = <1>;
 		ti,mbox-num-users = <4>;
 		ti,mbox-num-fifos = <16>;
+		status = "disabled";
 	};
 
 	mailbox0_cluster4: mailbox@29040000 {
@@ -696,6 +698,7 @@ mailbox0_cluster4: mailbox@29040000 {
 		#mbox-cells = <1>;
 		ti,mbox-num-users = <4>;
 		ti,mbox-num-fifos = <16>;
+		status = "disabled";
 	};
 
 	mailbox0_cluster5: mailbox@29050000 {
@@ -706,6 +709,7 @@ mailbox0_cluster5: mailbox@29050000 {
 		#mbox-cells = <1>;
 		ti,mbox-num-users = <4>;
 		ti,mbox-num-fifos = <16>;
+		status = "disabled";
 	};
 
 	mailbox0_cluster6: mailbox@29060000 {
@@ -715,6 +719,7 @@ mailbox0_cluster6: mailbox@29060000 {
 		#mbox-cells = <1>;
 		ti,mbox-num-users = <4>;
 		ti,mbox-num-fifos = <16>;
+		status = "disabled";
 	};
 
 	mailbox0_cluster7: mailbox@29070000 {
@@ -724,6 +729,7 @@ mailbox0_cluster7: mailbox@29070000 {
 		#mbox-cells = <1>;
 		ti,mbox-num-users = <4>;
 		ti,mbox-num-fifos = <16>;
+		status = "disabled";
 	};
 
 	main_r5fss0: r5fss@78000000 {
diff --git a/arch/arm64/boot/dts/ti/k3-am64-phycore-som.dtsi b/arch/arm64/boot/dts/ti/k3-am64-phycore-som.dtsi
index 8dfb6301b17d..7c2e26ef726c 100644
--- a/arch/arm64/boot/dts/ti/k3-am64-phycore-som.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am64-phycore-som.dtsi
@@ -160,30 +160,6 @@ &cpsw_port2 {
 	status = "disabled";
 };
 
-&mailbox0_cluster2 {
-	status = "disabled";
-};
-
-&mailbox0_cluster3 {
-	status = "disabled";
-};
-
-&mailbox0_cluster4 {
-	status = "disabled";
-};
-
-&mailbox0_cluster5 {
-	status = "disabled";
-};
-
-&mailbox0_cluster6 {
-	status = "disabled";
-};
-
-&mailbox0_cluster7 {
-	status = "disabled";
-};
-
 &main_i2c0 {
 	status = "okay";
 	pinctrl-names = "default";
diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index 39feea78a084..a8f5be51de8f 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -475,6 +475,8 @@ flash@0 {
 };
 
 &mailbox0_cluster2 {
+	status = "okay";
+
 	mbox_main_r5fss0_core0: mbox-main-r5fss0-core0 {
 		ti,mbox-rx = <0 0 2>;
 		ti,mbox-tx = <1 0 2>;
@@ -486,11 +488,9 @@ mbox_main_r5fss0_core1: mbox-main-r5fss0-core1 {
 	};
 };
 
-&mailbox0_cluster3 {
-	status = "disabled";
-};
-
 &mailbox0_cluster4 {
+	status = "okay";
+
 	mbox_main_r5fss1_core0: mbox-main-r5fss1-core0 {
 		ti,mbox-rx = <0 0 2>;
 		ti,mbox-tx = <1 0 2>;
@@ -502,21 +502,15 @@ mbox_main_r5fss1_core1: mbox-main-r5fss1-core1 {
 	};
 };
 
-&mailbox0_cluster5 {
-	status = "disabled";
-};
-
 &mailbox0_cluster6 {
+	status = "okay";
+
 	mbox_m4_0: mbox-m4-0 {
 		ti,mbox-rx = <0 0 2>;
 		ti,mbox-tx = <1 0 2>;
 	};
 };
 
-&mailbox0_cluster7 {
-	status = "disabled";
-};
-
 &main_r5fss0_core0 {
 	mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core0>;
 	memory-region = <&main_r5fss0_core0_dma_memory_region>,
diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index 2e2d40da360a..97414898c5c0 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -494,6 +494,8 @@ flash@0 {
 };
 
 &mailbox0_cluster2 {
+	status = "okay";
+
 	mbox_main_r5fss0_core0: mbox-main-r5fss0-core0 {
 		ti,mbox-rx = <0 0 2>;
 		ti,mbox-tx = <1 0 2>;
@@ -505,11 +507,9 @@ mbox_main_r5fss0_core1: mbox-main-r5fss0-core1 {
 	};
 };
 
-&mailbox0_cluster3 {
-	status = "disabled";
-};
-
 &mailbox0_cluster4 {
+	status = "okay";
+
 	mbox_main_r5fss1_core0: mbox-main-r5fss1-core0 {
 		ti,mbox-rx = <0 0 2>;
 		ti,mbox-tx = <1 0 2>;
@@ -521,21 +521,15 @@ mbox_main_r5fss1_core1: mbox-main-r5fss1-core1 {
 	};
 };
 
-&mailbox0_cluster5 {
-	status = "disabled";
-};
-
 &mailbox0_cluster6 {
+	status = "okay";
+
 	mbox_m4_0: mbox-m4-0 {
 		ti,mbox-rx = <0 0 2>;
 		ti,mbox-tx = <1 0 2>;
 	};
 };
 
-&mailbox0_cluster7 {
-	status = "disabled";
-};
-
 &main_r5fss0_core0 {
 	mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core0>;
 	memory-region = <&main_r5fss0_core0_dma_memory_region>,
-- 
2.39.2