[PATCH v3 43/44] dt: document HiSilicon SPMI controller and mfd/regulator properties

Mauro Carvalho Chehab
2020-08-17T07:13:34Z

Add documentation for the properties needed by the HiSilicon
6421v600 driver, and by the SPMI controller used to access
the chipset.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
.../mfd/hisilicon,hi6421-spmi-pmic.yaml | 182 ++++++++++++++++++
.../spmi/hisilicon,hisi-spmi-controller.yaml | 54 ++++++
2 files changed, 236 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/hisilicon,hi6421-spmi-pmic.yaml
create mode 100644 Documentation/devicetree/bindings/spmi/hisilicon,hisi-spmi-controller.yaml

diff --git a/Documentation/devicetree/bindings/mfd/hisilicon,hi6421-spmi-pmic.yaml b/Documentation/devicetree/bindings/mfd/hisilicon,hi6421-spmi-pmic.yaml
new file mode 100644
index 000000000000..95494114554d
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/hisilicon,hi6421-spmi-pmic.yaml
@@ -0,0 +1,182 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/hisilicon,hi6421-spmi-pmic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HiSilicon 6421v600 SPMI PMIC
+
+maintainers:
+ - Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
+
+description: |
+ HiSilicon 6421v600 uses a MIPI System Power Management (SPMI) bus in order
+ to provide interrupts and power supply.
+
+ The GPIO and interrupt settings are represented as part of the top-level PMIC
+ node.
+
+ The SPMI controller part is provided by
+ Documentation/devicetree/bindings/spmi/hisilicon,hisi-spmi-controller.yaml.
+
+properties:
+ $nodename:
+ pattern: "pmic@[0-9a-f]"
+
+ compatible:
+ const: hisilicon,hi6421-spmi-pmic
+
+ reg:
+ maxItems: 1
+
+ spmi-channel:
+ description: number of the SPMI channel where the PMIC is connected
+
+ '#interrupt-cells':
+ const: 2
+
+ interrupt-controller:
+ description:
+ Identify that the PMIC is capable of behaving as an interrupt controller.
+
+ gpios:
+ maxItems: 1
+
+ irq-num:
+ description: Interrupt request number
+
+ 'irq-array':
+ description: Interrupt request array
+
+ 'irq-mask-addr':
+ description: Address for the interrupt request mask
+
+ 'irq-addr':
+ description: Address for the interrupt request
+
+ regulators:
+ type: object
+
+ properties:
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ patternProperties:
+ '^ldo@[0-9]+$':
+ type: object
+
+ $ref: "/schemas/regulator/regulator.yaml#"
+
+ properties:
+ reg:
+ description: Enable register.
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ vsel-reg:
+ description: Voltage selector register.
+
+ enable-mask:
+ description: Bitmask used to enable the regulator.
+
+ voltage-table:
+ description: Table with the selector items for the voltage regulator.
+ minItems: 2
+ maxItems: 16
+
+ off-on-delay-us:
+ description: Time required for changing state to enabled in microseconds.
+
+ startup-delay-us:
+ description: Startup time in microseconds.
+
+ idle-mode-mask:
+ description: Bitmask used to put the regulator on idle mode.
+
+ eco-microamp:
+ description: Maximum current while on idle mode.
+
+ required:
+ - reg
+ - vsel-reg
+ - enable-mask
+ - voltage-table
+ - off-on-delay-us
+ - startup-delay-us
+
+required:
+ - compatible
+ - reg
+ - regulators
+
+examples:
+ - |
+ /* pmic properties */
+
+ pmic: pmic@0 {
+ compatible = "hisilicon,hi6421-spmi-pmic";
+ slave_id = <0>;
+ reg = <0 0>;
+
+ #interrupt-cells = <2>;
+ interrupt-controller;
+ gpios = <&gpio28 0 0>;
+ irq-num = <16>;
+ irq-array = <2>;
+ irq-mask-addr = <0x202 2>;
+ irq-addr = <0x212 2>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ regulators {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ldo3: ldo3@16 {
+ reg = <0x16>;
+ vsel-reg = <0x51>;
+
+ regulator-name = "ldo3";
+ regulator-min-microvolt = <1500000>;
+ regulator-max-microvolt = <2000000>;
+ regulator-boot-on;
+
+ enable-mask = <0x01>;
+
+ voltage-table = <1500000>, <1550000>, <1600000>, <1650000>,
+ <1700000>, <1725000>, <1750000>, <1775000>,
+ <1800000>, <1825000>, <1850000>, <1875000>,
+ <1900000>, <1925000>, <1950000>, <2000000>;
+ off-on-delay-us = <20000>;
+ startup-delay-us = <120>;
+ };
+
+ ldo4: ldo4@17 { /* 40 PIN */
+ reg = <0x17>;
+ vsel-reg = <0x52>;
+
+ regulator-name = "ldo4";
+ regulator-min-microvolt = <1725000>;
+ regulator-max-microvolt = <1900000>;
+ regulator-boot-on;
+
+ enable-mask = <0x01>;
+ idle-mode-mask = <0x10>;
+ eco-microamp = <10000>;
+
+ hi6421-vsel = <0x52 0x07>;
+ voltage-table = <1725000>, <1750000>, <1775000>, <1800000>,
+ <1825000>, <1850000>, <1875000>, <1900000>;
+ off-on-delay-us = <20000>;
+ startup-delay-us = <120>;
+ };
+ };
+ };
diff --git a/Documentation/devicetree/bindings/spmi/hisilicon,hisi-spmi-controller.yaml b/Documentation/devicetree/bindings/spmi/hisilicon,hisi-spmi-controller.yaml
new file mode 100644
index 000000000000..5aeb2ae12024
--- /dev/null
+++ b/Documentation/devicetree/bindings/spmi/hisilicon,hisi-spmi-controller.yaml
@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spmi/hisilicon,hisi-spmi-controller.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HiSilicon SPMI controller
+
+maintainers:
+ - Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
+
+description: |
+ The HiSilicon SPMI controller is found on some Kirin-based designs.
+ It is a MIPI System Power Management (SPMI) controller.
+
+ The PMIC part is provided by
+ Documentation/devicetree/bindings/mfd/hisilicon,hi6421-spmi-pmic.yaml.
+
+properties:
+ $nodename:
+ pattern: "spmi@[0-9a-f]"
+
+ compatible:
+ const: hisilicon,spmi-controller
+
+ reg:
+ maxItems: 1
+
+ "#address-cells":
+ const: 2
+
+ "#size-cells":
+ const: 0
+
+ spmi-channel:
+ description: number of the SPMI channel where the PMIC is connected
+
+patternProperties:
+ "^pmic@[0-9a-f]$":
+ $ref: "/schemas/mfd/hisilicon,hi6421-spmi-pmic.yaml#"
+
+examples:
+ - |
+ spmi: spmi@fff24000 {
+ compatible = "hisilicon,spmi-controller";
+ #address-cells = <2>;
+ #size-cells = <0>;
+ status = "ok";
+ reg = <0x0 0xfff24000 0x0 0x1000>;
+ spmi-channel = <2>;
+
+ /* pmic properties */
+
+ };
--
2.26.2