[PATCH v5 3/8] dt-bindings: regulator: document stpmic1 pmic regulators - Pascal PAILLET-LME

From: Pascal PAILLET-LME <p.paillet@st.com>
To: "dmitry.torokhov@gmail.com" <dmitry.torokhov@gmail.com>,
	"robh+dt@kernel.org" <robh+dt@kernel.org>,
	"mark.rutland@arm.com" <mark.rutland@arm.com>,
	"lee.jones@linaro.org" <lee.jones@linaro.org>,
	"lgirdwood@gmail.com" <lgirdwood@gmail.com>,
	"broonie@kernel.org" <broonie@kernel.org>,
	"wim@linux-watchdog.org" <wim@linux-watchdog.org>,
	"linux@roeck-us.net" <linux@roeck-us.net>,
	"linux-input@vger.kernel.org" <linux-input@vger.kernel.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-watchdog@vger.kernel.org" <linux-watchdog@vger.kernel.org>,
	"benjamin.gaignard@linaro.org" <benjamin.gaignard@linaro.org>,
	"eballetbo@gmail.com" <eballetbo@gmail.com>,
	"axel.lin@ingics.com" <axel.lin@ingics.com>
Cc: Pascal PAILLET-LME <p.paillet@st.com>
Subject: [PATCH v5 3/8] dt-bindings: regulator: document stpmic1 pmic regulators
Date: Mon, 29 Oct 2018 16:22:05 +0000	[thread overview]
Message-ID: <1540830122-2577-4-git-send-email-p.paillet@st.com> (raw)
In-Reply-To: <1540830122-2577-1-git-send-email-p.paillet@st.com>

The STPMIC1 regulators supply power to the application processor as well as
to the external system peripherals such as DDR, Flash memories and system
devices.

Signed-off-by: Pascal Paillet <p.paillet@st.com>
---
changes in v5:
* describe regulator-active-discharge is available for power switches
* remove interrupt parents

 .../bindings/regulator/st,stpmic1-regulator.txt    | 67 ++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/st,stpmic1-regulator.txt

diff --git a/Documentation/devicetree/bindings/regulator/st,stpmic1-regulator.txt b/Documentation/devicetree/bindings/regulator/st,stpmic1-regulator.txt
new file mode 100644
index 0000000..5adc938
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/st,stpmic1-regulator.txt
@@ -0,0 +1,67 @@
+STMicroelectronics STPMIC1 Voltage regulators
+
+Regulator Nodes are optional depending on needs.
+
+Available Regulators in STPMIC1 device are:
+  - buck1 for Buck BUCK1
+  - buck2 for Buck BUCK2
+  - buck3 for Buck BUCK3
+  - buck4 for Buck BUCK4
+  - ldo1 for LDO LDO1
+  - ldo2 for LDO LDO2
+  - ldo3 for LDO LDO3
+  - ldo4 for LDO LDO4
+  - ldo5 for LDO LDO5
+  - ldo6 for LDO LDO6
+  - vref_ddr for LDO Vref DDR
+  - boost for Buck BOOST
+  - pwr_sw1 for VBUS_OTG switch
+  - pwr_sw2 for SW_OUT switch
+
+Switches are fixed voltage regulators with only enable/disable capability.
+
+Optional properties:
+- st,mask-reset: mask reset for this regulator: the regulator configuration
+  is maintained during pmic reset.
+- regulator-pull-down: enable high pull down
+  if not specified light pull down is used
+- regulator-over-current-protection:
+    if set, all regulators are switched off in case of over-current detection
+    on this regulator,
+    if not set, the driver only sends an over-current event.
+- interrupt-parent: phandle to the parent interrupt controller
+- interrupts: index of current limit detection interrupt
+- <regulator>-supply: phandle to the parent supply/regulator node
+	each regulator supply can be described except vref_ddr.
+- regulator-active-discharge: can be used on pwr_sw1 and pwr_sw2.
+
+Example:
+regulators {
+	compatible = "st,stpmic1-regulators";
+
+	ldo6-supply = <&v3v3>;
+
+	vdd_core: buck1 {
+		regulator-name = "vdd_core";
+		interrupts = <IT_CURLIM_BUCK1 0>;
+		st,mask-reset;
+		regulator-pull-down;
+		regulator-min-microvolt = <700000>;
+		regulator-max-microvolt = <1200000>;
+	};
+
+	v3v3: buck4 {
+		regulator-name = "v3v3";
+		interrupts = <IT_CURLIM_BUCK4 0>;
+
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+
+	v1v8: ldo6 {
+		regulator-name = "v1v8";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-over-current-protection;
+	};
+};
-- 
1.9.1
