dt-bindings: bd718x7: Yamlify and add BD71850

Convert ROHM bd71837 and bd71847 PMIC binding text docs to yaml. Split
the binding document to two separate documents (own documents for BD71837
and BD71847) as they have different amount of regulators. This way we can
better enforce the node name check for regulators. ROHM is also providing
BD71850 - which is almost identical to BD71847 - main difference is some
initial regulator states. The BD71850 can be driven by same driver and it
has same buck/LDO setup as BD71847 - add it to BD71847 binding document and
introduce compatible for it.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 222 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/mfd/rohm,bd71847-pmic.yaml b/Documentation/devicetree/bindings/mfd/rohm,bd71847-pmic.yaml
new file mode 100644
index 000000000000..402e40dfe0b8
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+++ b/Documentation/devicetree/bindings/mfd/rohm,bd71847-pmic.yaml
@@ -0,0 +1,222 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/rohm,bd71847-pmic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ROHM BD71847 and BD71850 Power Management Integrated Circuit bindings
+
+maintainers:
+  - Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
+
+description: |
+  BD71847AMWV and BD71850MWV are programmable Power Management ICs for powering
+  single-core,  dual-core, and quad-core SoCs such as NXP-i.MX 8M. It is
+  optimized for low BOM cost and compact solution footprint. BD71847MWV and
+  BD71850MWV integrate 6 Buck regulators and 6 LDOs.
+  Datasheets are available at
+  https://www.rohm.com/products/power-management/power-management-ic-for-system/industrial-consumer-applications/nxp-imx/bd71847amwv-product
+  https://www.rohm.com/products/power-management/power-management-ic-for-system/industrial-consumer-applications/nxp-imx/bd71850mwv-product
+
+properties:
+  compatible:
+    enum:
+      - rohm,bd71847
+      - rohm,bd71850
+
+  reg:
+    description:
+      I2C slave address.
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  "#clock-cells":
+    const: 0
+
+# The BD71847 abd BD71850 support two different HW states as reset target
+# states. States are called as SNVS and READY. At READY state all the PMIC
+# power outputs go down and OTP is reload. At the SNVS state all other logic
+# and external devices apart from the SNVS power domain are shut off. Please
+# refer to NXP i.MX8 documentation for further information regarding SNVS
+# state. When a reset is done via SNVS state the PMIC OTP data is not reload.
+# This causes power outputs that have been under SW control to stay down when
+# reset has switched power state to SNVS. If reset is done via READY state the
+# power outputs will be returned to HW control by OTP loading. Thus the reset
+# target state is set to READY by default. If SNVS state is used the boot
+# crucial regulators must have the regulator-always-on and regulator-boot-on
+# properties set in regulator node.
+
+  rohm,reset-snvs-powered:
+    description:
+      Transfer PMIC to SNVS state at reset.
+    type: boolean
+
+# Configure the "short press" and "long press" timers for the power button.
+# Values are rounded to what hardware supports
+# Short-press:
+#   Shortest being 10ms, next 500ms and then multiple of 500ms up to 7,5s
+# Long-press:
+#   Shortest being 10ms, next 1000ms and then multiple of 1000ms up to 15s
+# If these properties are not present the existing # configuration (from
+# bootloader or OTP) is not touched.
+
+  rohm,short-press-ms:
+    description:
+      Short press duration in milliseconds
+    enum:
+      - 10
+      - 500
+      - 1000
+      - 1500
+      - 2000
+      - 2500
+      - 3000
+      - 3500
+      - 4000
+      - 4500
+      - 5000
+      - 5500
+      - 6000
+      - 6500
+      - 7000
+      - 7500
+
+  rohm,long-press-ms:
+    description:
+      Long press duration in milliseconds
+    enum:
+      - 10
+      - 1000
+      - 2000
+      - 3000
+      - 4000
+      - 5000
+      - 6000
+      - 7000
+      - 8000
+      - 9000
+      - 10000
+      - 11000
+      - 12000
+      - 13000
+      - 14000
+      - 15000
+
+  regulators:
+    $ref: ../regulator/rohm,bd71847-regulator.yaml
+    description:
+      List of child nodes that specify the regulators.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - "#clock-cells"
+  - regulators
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/leds/common.h>
+
+    i2c {
+      pmic: pmic@4b {
+            compatible = "rohm,bd71847";
+            reg = <0x4b>;
+            interrupt-parent = <&gpio1>;
+            interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
+            #clock-cells = <0>;
+            clocks = <&osc 0>;
+            rohm,reset-snvs-powered;
+            rohm,short-press-ms = <10>;
+            rohm,long-press-ms = <2000>;
+
+            regulators {
+                buck1: BUCK1 {
+                    regulator-name = "buck1";
+                    regulator-min-microvolt = <700000>;
+                    regulator-max-microvolt = <1300000>;
+                    regulator-boot-on;
+                    regulator-always-on;
+                    regulator-ramp-delay = <1250>;
+                    rohm,dvs-run-voltage = <900000>;
+                    rohm,dvs-idle-voltage = <850000>;
+                    rohm,dvs-suspend-voltage = <800000>;
+                };
+                buck2: BUCK2 {
+                    regulator-name = "buck2";
+                    regulator-min-microvolt = <700000>;
+                    regulator-max-microvolt = <1300000>;
+                    regulator-boot-on;
+                    regulator-always-on;
+                    regulator-ramp-delay = <1250>;
+                    rohm,dvs-run-voltage = <1000000>;
+                    rohm,dvs-idle-voltage = <900000>;
+                };
+                buck3: BUCK3 {
+                    regulator-name = "buck3";
+                    regulator-min-microvolt = <550000>;
+                    regulator-max-microvolt = <1350000>;
+                    regulator-boot-on;
+                };
+                buck4: BUCK4 {
+                    regulator-name = "buck4";
+                    regulator-min-microvolt = <2600000>;
+                    regulator-max-microvolt = <3300000>;
+                    regulator-boot-on;
+                };
+                buck5: BUCK5 {
+                    regulator-name = "buck5";
+                    regulator-min-microvolt = <1605000>;
+                    regulator-max-microvolt = <1995000>;
+                    regulator-boot-on;
+                };
+                buck8: BUCK6 {
+                    regulator-name = "buck6";
+                    regulator-min-microvolt = <800000>;
+                    regulator-max-microvolt = <1400000>;
+                };
+
+                ldo1: LDO1 {
+                    regulator-name = "ldo1";
+                    regulator-min-microvolt = <1600000>;
+                    regulator-max-microvolt = <3300000>;
+                    regulator-boot-on;
+                };
+                ldo2: LDO2 {
+                    regulator-name = "ldo2";
+                    regulator-min-microvolt = <800000>;
+                    regulator-max-microvolt = <900000>;
+                    regulator-boot-on;
+                };
+                ldo3: LDO3 {
+                    regulator-name = "ldo3";
+                    regulator-min-microvolt = <1800000>;
+                    regulator-max-microvolt = <3300000>;
+                };
+                ldo4: LDO4 {
+                    regulator-name = "ldo4";
+                    regulator-min-microvolt = <900000>;
+                    regulator-max-microvolt = <1800000>;
+                };
+                ldo5: LDO5 {
+                    regulator-name = "ldo5";
+                    regulator-min-microvolt = <800000>;
+                    regulator-max-microvolt = <3300000>;
+                };
+                ldo6: LDO6 {
+                    regulator-name = "ldo6";
+                    regulator-min-microvolt = <900000>;
+                    regulator-max-microvolt = <1800000>;
+                };
+            };
+        };
+    };