[PATCH v2 1/1] ARM: dts: imx53: drop fallback compatible "dlg,da9052"

[PATCH v2 1/1] ARM: dts: imx53: drop fallback compatible "dlg,da9052"

[Frank.Li]

From: Frank Li <Frank.Li@nxp.com>

The "dlg,da9053-aa" compatible string is not compatible with "dlg,da9052".

DA9052 vs DA9053-AA Differences (from da9052-regulator.c)
1. BUCK4 Voltage Range (only regulator table difference)
		DA9052 BUCK4	DA9053-AA BUCK4
Min voltage	1800 mV		950 mV
Max voltage	3600 mV		2525 mV
Step size	50 mV		25 mV

DA9052 BUCK4 also has a non-linear voltage mapping above 3V (step increases
to 100 mV for selector >= 24). DA9053-AA BUCK4 has no such special mapping.

2. BUCK Current Limits
Level	DA9052 (all BUCKs)	DA9053-AA BUCK1		DA9053-AA BUCK2/3/4
0	700 mA			1600 mA			800 mA
1	800 mA			2000 mA			1000 mA
2	1000 mA			2400 mA			1200 mA
3	1200 mA			3000 mA			1500 mA

DA9053-AA BUCK1 supports up to 3A (vs 1.2A on DA9052).

Drop the fallback compatible to fix the following CHECK_DTBS warning:

  dialog@48 (dlg,da9053-aa): compatible: ['dlg,da9053-aa', 'dlg,da9052'] is too long

Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
Changes at v2
- update commit message.

Cc: Conor Dooley <conor@kernel.org>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>

at thread
https://lore.kernel.org/imx/20260902-varied-unsent-b99f9f007685@spud/
Conor Dooley DA9052-AA is NOT compatible with DA9052.

I missed check da9052-regulator.c.

prevous kyrz ask drop the same patch at
https://lore.kernel.org/imx/20260404-thoughtful-placid-boobook-da26da@quoll/

Add commit message show why not compatible.
---
 arch/arm/boot/dts/nxp/imx/imx53-qsb.dts             | 2 +-
 arch/arm/boot/dts/nxp/imx/imx53-voipac-dmm-668.dtsi | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/nxp/imx/imx53-qsb.dts b/arch/arm/boot/dts/nxp/imx/imx53-qsb.dts
index 6831836bd726c..e7e15d2b82c44 100644
--- a/arch/arm/boot/dts/nxp/imx/imx53-qsb.dts
+++ b/arch/arm/boot/dts/nxp/imx/imx53-qsb.dts
@@ -13,7 +13,7 @@ / {
 
 &i2c1 {
 	pmic: dialog@48 {
-		compatible = "dlg,da9053-aa", "dlg,da9052";
+		compatible = "dlg,da9053-aa";
 		reg = <0x48>;
 		interrupt-parent = <&gpio7>;
 		interrupts = <11 IRQ_TYPE_LEVEL_LOW>; /* low-level active IRQ at GPIO7_11 */
diff --git a/arch/arm/boot/dts/nxp/imx/imx53-voipac-dmm-668.dtsi b/arch/arm/boot/dts/nxp/imx/imx53-voipac-dmm-668.dtsi
index 6dc70a92d831b..6eed683d92a83 100644
--- a/arch/arm/boot/dts/nxp/imx/imx53-voipac-dmm-668.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx53-voipac-dmm-668.dtsi
@@ -128,7 +128,7 @@ &i2c1 {
 	status = "okay";
 
 	pmic: dialog@48 {
-		compatible = "dlg,da9053-aa", "dlg,da9052";
+		compatible = "dlg,da9053-aa";
 		reg = <0x48>;
 		interrupt-parent = <&gpio7>;
 		interrupts = <11 IRQ_TYPE_LEVEL_LOW>; /* low-level active IRQ at GPIO7_11 */
-- 
2.43.0

Re: [PATCH v2 1/1] ARM: dts: imx53: drop fallback compatible "dlg,da9052"

[Krzysztof Kozlowski]

On 02/09/2026 21:13, Frank.Li@oss.nxp.com wrote:
> From: Frank Li <Frank.Li@nxp.com>
> 
> The "dlg,da9053-aa" compatible string is not compatible with "dlg,da9052".
> 
> DA9052 vs DA9053-AA Differences (from da9052-regulator.c)
> 1. BUCK4 Voltage Range (only regulator table difference)
> 		DA9052 BUCK4	DA9053-AA BUCK4
> Min voltage	1800 mV		950 mV
> Max voltage	3600 mV		2525 mV
> Step size	50 mV		25 mV


Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>

Best regards,
Krzysztof