[PATCH] arm: dts: k3-j721e-sk-u-boot: fix boot on j721e SK

[Anand Gadiyar]

From: Sinthu Raja <sinthu.raja at ti.com>

J721e SK has been broken since at least March 2022.

The main-navss and mcu-navss nodes were renamed and this caused the
A72 SPL to fail early in the boot even before the serial port was
enabled. Fix this.

A later patch series between v2022.07 and v2022.10 additionally broke
boot on this board by introducing hbmc nodes which are not present on
this board. The right fix is to disable these by default in the SOC
dtsi file, but for now we can also disable them in the u-boot dtsi.

With both these fixed, we can now boot the j721e SK board fully from
mainline u-boot.

Fixes: 58d61fb5a77ef ("arm: dts: k3-j721e-sk: Add initial A72 specific dts support")
Fixes: 297daac43afb9 ("arm: dts: k3-j721e-mcu-wakeup: Add HyperBus Controller node")
Reported-by: Anand Gadiyar <gadiyar at ti.com>
Signed-off-by: Sinthu Raja <sinthu.raja at ti.com>
[gadiyar at ti.com: update commit description]
Signed-off-by: Anand Gadiyar <gadiyar at ti.com>
Cc: Bryan Brattlof <bb at ti.com>
---
Hi Tom, we'd really love to see this make it to 2023.04 - Bryan and I
spent a whole week narrowing it down, and this gets the board working
again. Thanks!

- Anand and Bryan and Sinthu

 arch/arm/dts/k3-j721e-sk-u-boot.dtsi | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/arch/arm/dts/k3-j721e-sk-u-boot.dtsi b/arch/arm/dts/k3-j721e-sk-u-boot.dtsi
index 2d65e2db42..f529e7032a 100644
--- a/arch/arm/dts/k3-j721e-sk-u-boot.dtsi
+++ b/arch/arm/dts/k3-j721e-sk-u-boot.dtsi
@@ -33,7 +33,7 @@
 &cbass_main{
 	u-boot,dm-spl;
 
-	main_navss {
+	main_navss: bus at 30000000 {
 		u-boot,dm-spl;
 	};
 };
@@ -49,7 +49,7 @@
 		u-boot,dm-spl;
 	};
 
-	mcu-navss {
+	mcu_navss: bus at 28380000 {
 		u-boot,dm-spl;
 
 		ringacc at 2b800000 {
@@ -237,6 +237,10 @@
 	u-boot,dm-spl;
 };
 
+&hbmc {
+	status = "disabled";
+};
+
 &ospi0 {
 	u-boot,dm-spl;
 
-- 
2.34.1