linux-kernel - [PATCH 06/17] dt-bindings: firmware: google,gs101-acpm-ipc: update PMIC examples

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Message-Id: <20250604-s2mpg1x-regulators-v1-6-6038740f49ae@linaro.org>
Date: Wed, 04 Jun 2025 16:25:45 +0100
From: André Draszik <andre.draszik@...aro.org>
To: Tudor Ambarus <tudor.ambarus@...aro.org>, Rob Herring <robh@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Krzysztof Kozlowski <krzk@...nel.org>, 
 Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, 
 Lee Jones <lee@...nel.org>, Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>
Cc: Peter Griffin <peter.griffin@...aro.org>, 
 Will McVicker <willmcvicker@...gle.com>, kernel-team@...roid.com, 
 linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-gpio@...r.kernel.org, 
 André Draszik <andre.draszik@...aro.org>
Subject: [PATCH 06/17] dt-bindings: firmware: google,gs101-acpm-ipc: update
 PMIC examples

In a typical system using the Samsung S2MPG10 PMIC, an S2MPG11 is used
as a sub-PMIC.

The interface for both is the ACPM firmware protocol, so update the
example here to describe the connection for both.

Signed-off-by: André Draszik <andre.draszik@...aro.org>
---
 .../bindings/firmware/google,gs101-acpm-ipc.yaml   | 40 ++++++++++++++++++++--
 1 file changed, 37 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/firmware/google,gs101-acpm-ipc.yaml b/Documentation/devicetree/bindings/firmware/google,gs101-acpm-ipc.yaml
index 62a3a7dac5bd250a7f216c72f3315cd9632d93e1..408cf84e426b80b6c06e69fda87d0f8bfc61498d 100644
--- a/Documentation/devicetree/bindings/firmware/google,gs101-acpm-ipc.yaml
+++ b/Documentation/devicetree/bindings/firmware/google,gs101-acpm-ipc.yaml
@@ -36,6 +36,15 @@ properties:
       compatible:
         const: samsung,s2mpg10-pmic
 
+  pmic2:
+    description: Child node describing the sub PMIC.
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: samsung,s2mpg11-pmic
+
   shmem:
     description:
       List of phandle pointing to the shared memory (SHM) area. The memory
@@ -52,7 +61,9 @@ additionalProperties: false
 
 examples:
   - |
+    #include <dt-bindings/gpio/gpio.h>
     #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/regulator/samsung,s2mpg10-regulator.h>
 
     power-management {
         compatible = "google,gs101-acpm-ipc";
@@ -63,12 +74,20 @@ examples:
             compatible = "samsung,s2mpg10-pmic";
             interrupts-extended = <&gpa0 6 IRQ_TYPE_LEVEL_LOW>;
 
+            vinl3m-supply = <&buck8m>;
+
             regulators {
                 ldo1m {
                     regulator-name = "vdd_ldo1";
                     regulator-min-microvolt = <700000>;
                     regulator-max-microvolt = <1300000>;
-                    regulator-always-on;
+                };
+
+                ldo20m {
+                    regulator-name = "vdd_ldo1";
+                    regulator-min-microvolt = <700000>;
+                    regulator-max-microvolt = <1300000>;
+                    samsung,ext-control = <S2MPG10_PCTRLSEL_LDO20M_EN>;
                 };
 
                 // ...
@@ -77,8 +96,23 @@ examples:
                     regulator-name = "vdd_mif";
                     regulator-min-microvolt = <450000>;
                     regulator-max-microvolt = <1300000>;
-                    regulator-always-on;
-                    regulator-boot-on;
+                    regulator-ramp-delay = <6250>;
+                };
+            };
+        };
+
+        pmic2 {
+            compatible = "samsung,s2mpg11-pmic";
+            interrupts-extended = <&gpa0 7 IRQ_TYPE_LEVEL_LOW>;
+
+            vinl1s-supply = <&buck8m>;
+            vinl2s-supply = <&buck6s>;
+
+            regulators {
+                buckd {
+                    regulator-ramp-delay = <6250>;
+                    samsung,ext-control = <S2MPG11_PCTRLSEL_UFS_EN>;
+                    samsung,ext-control-gpios = <&gpp0 1 GPIO_ACTIVE_HIGH>;
                 };
             };
         };

-- 
2.49.0.1204.g71687c7c1d-goog