[PATCH v2] arm: mach-k3: j721s2_init: Support less than max DDR controllers

[Neha Malcom Francis]

The number of DDR controllers to be initialised and used should depend
on the device tree with the constraint of the maximum number of
controllers the device supports. Since J721S2 has multiple (2)
controllers, instead of hardcoding the number of probes, move to
depending on the device tree UCLASS_RAM nodes present.

Signed-off-by: Neha Malcom Francis <n-francis at ti.com>
---
Changes since v1:
https://lore.kernel.org/all/20240130074139.2627793-1-n-francis@ti.com/
- Moved away from using loop since J721S2 has only two controllers
  (Udit)

Boot logs:
https://gist.github.com/nehamalcom/740e3dcc1e94ca36250f0248d73f6b37

 arch/arm/mach-k3/j721s2_init.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-k3/j721s2_init.c b/arch/arm/mach-k3/j721s2_init.c
index fb0708bae1..07f9221baf 100644
--- a/arch/arm/mach-k3/j721s2_init.c
+++ b/arch/arm/mach-k3/j721s2_init.c
@@ -228,8 +228,8 @@ void k3_mem_init(void)
 			panic("DRAM 0 init failed: %d\n", ret);
 
 		ret = uclass_next_device_err(&dev);
-		if (ret)
-			panic("DRAM 1 init failed: %d\n", ret);
+		if (ret && ret != -ENODEV)
+			panic("DRAM %d init failed: %d\n", ctr, ret);
 	}
 	spl_enable_cache();
 }
-- 
2.34.1