Document Renesas RAA215300 PMIC bindings. The RAA215300 is a high Performance 9-Channel PMIC supporting DDR Memory, with Built-In Charger and RTC. It supports DDR3, DDR3L, DDR4, and LPDDR4 memory power requirements. The internally compensated regulators, built-in Real-Time Clock (RTC), 32kHz crystal oscillator, and coin cell battery charger provide a highly integrated, small footprint power solution ideal for System-On-Module (SOM) applications. A spread spectrum feature provides an ease-of-use solution for noise-sensitive audio or RF applications. Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx> Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx> --- v4->v5: * Added description for clocks. * Replaced Oneof->enum in clock-names as it is simpler. * Added Rb tag from Conor. v3->v4: * Moved bindings from mfd->regulator. * Dropped minItems from reg. * Dropped renesas,rtc-enabled property and instead used clock-names property to find RTC is enabled or not. * Added reg-names in required property. * Updated the example. v2->v3: * Added more detailed description for renesas,rtc-enabled property. RFC->v2: * Updated reg property * Added optional reg-names, interrupts and renesas,rtc-enabled properties. * Fixed the node name in the example * Dropped the cross link property renesas,raa215300-rtc. * Updated the example --- .../bindings/regulator/renesas,raa215300.yaml | 85 +++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/renesas,raa215300.yaml diff --git a/Documentation/devicetree/bindings/regulator/renesas,raa215300.yaml b/Documentation/devicetree/bindings/regulator/renesas,raa215300.yaml new file mode 100644 index 000000000000..a57676e3d5da --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/renesas,raa215300.yaml @@ -0,0 +1,85 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/regulator/renesas,raa215300.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas RAA215300 Power Management Integrated Circuit (PMIC) + +maintainers: + - Biju Das <biju.das.jz@xxxxxxxxxxxxxx> + +description: | + The RAA215300 is a high-performance, low-cost 9-channel PMIC designed for + 32-bit and 64-bit MCU and MPU applications. It supports DDR3, DDR3L, DDR4, + and LPDDR4 memory power requirements. The internally compensated regulators, + built-in Real-Time Clock (RTC), 32kHz crystal oscillator, and coin cell + battery charger provide a highly integrated, small footprint power solution + ideal for System-On-Module (SOM) applications. A spread spectrum feature + provides an ease-of-use solution for noise-sensitive audio or RF applications. + + This device exposes two devices via I2C. One for the integrated RTC IP, and + one for everything else. + + Link to datasheet: + https://www.renesas.com/in/en/products/power-power-management/multi-channel-power-management-ics-pmics/ssdsoc-power-management-ics-pmic-and-pmus/raa215300-high-performance-9-channel-pmic-supporting-ddr-memory-built-charger-and-rtc + +properties: + compatible: + enum: + - renesas,raa215300 + + reg: + maxItems: 2 + + reg-names: + items: + - const: main + - const: rtc + + interrupts: + maxItems: 1 + + clocks: + description: | + The clocks are optional. The RTC is disabled, if no clocks are + provided(either xin or clkin). + maxItems: 1 + + clock-names: + description: | + Use xin, if connected to an external crystal. + Use clkin, if connected to an external clock signal. + enum: + - xin + - clkin + +required: + - compatible + - reg + - reg-names + +additionalProperties: false + +examples: + - | + /* 32.768kHz crystal */ + x2: clock-xtal { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <32768>; + }; + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + raa215300: pmic@12 { + compatible = "renesas,raa215300"; + reg = <0x12>, <0x6f>; + reg-names = "main", "rtc"; + + clocks = <&x2>; + clock-names = "xin"; + }; + }; -- 2.25.1
