[PATCH] ARM: dts: integrator: Fix DMA ranges mismatch warning on IM-PD1

[Kuan-Wei Chiu]

When compiling the device tree for the Integrator/AP with IM-PD1, the
following warning is observed regarding the display controller node:

arch/arm/boot/dts/arm/integratorap-im-pd1.dts:251.3-14: Warning
(dma_ranges_format):
/bus at c0000000/bus at c0000000/display at 1000000:dma-ranges: empty
"dma-ranges" property but its #address-cells (2) differs from
/bus at c0000000/bus at c0000000 (1)

The display node specifies an empty "dma-ranges" property, intended to
describe a 1:1 identity mapping. However, the node lacks explicit
"#address-cells" and "#size-cells" properties. In this case, the device
tree compiler defaults the address cells to 2 (64-bit), which conflicts
with the parent bus configuration (32-bit, 1 cell).

Fix this by explicitly defining "#address-cells" and "#size-cells" as
1. This matches the 32-bit architecture of the Integrator platform and
ensures the address translation range is correctly parsed by the
compiler.

Fixes: 7bea67a99430 ("ARM: dts: integrator: Fix DMA ranges")
Cc: stable at vger.kernel.org
Signed-off-by: Kuan-Wei Chiu <visitorckw at gmail.com>
---
 arch/arm/boot/dts/arm/integratorap-im-pd1.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/arm/integratorap-im-pd1.dts b/arch/arm/boot/dts/arm/integratorap-im-pd1.dts
index db13e09f2fab..6d90d9a42dc9 100644
--- a/arch/arm/boot/dts/arm/integratorap-im-pd1.dts
+++ b/arch/arm/boot/dts/arm/integratorap-im-pd1.dts
@@ -248,6 +248,8 @@ display at 1000000 {
 		/* 640x480 16bpp @ 25.175MHz is 36827428 bytes/s */
 		max-memory-bandwidth = <40000000>;
 		memory-region = <&impd1_ram>;
+		#address-cells = <1>;
+		#size-cells = <1>;
 		dma-ranges;
 
 		port at 0 {
-- 
2.52.0.177.g9f829587af-goog