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[62.78.225.252]) by smtp.gmail.com with ESMTPSA id b15sm901348lfj.306.2021.01.22.06.32.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Jan 2021 06:32:14 -0800 (PST) Date: Fri, 22 Jan 2021 16:32:07 +0200 From: Matti Vaittinen To: matti.vaittinen@fi.rohmeurope.com, mazziesaccount@gmail.com Cc: Lee Jones , Rob Herring , Matti Vaittinen , Geert Uytterhoeven , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-power@fi.rohmeurope.com, Yoshihiro Shimoda Subject: [PATCH v7 1/6] dt_bindings: mfd: Add ROHM BD9576MUF and BD9573MUF PMICs Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add bindings for ROHM BD9576MUF and BD9573MUF PMICs. These PMICs are primarily intended to be used to power the R-Car series processors. They provide 6 power outputs, safety features and a watchdog with two functional modes. Signed-off-by: Matti Vaittinen Reviewed-by: Rob Herring --- Changes since v6: - No changes .../bindings/mfd/rohm,bd9576-pmic.yaml | 123 ++++++++++++++++++ 1 file changed, 123 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd9576-pmic.yaml diff --git a/Documentation/devicetree/bindings/mfd/rohm,bd9576-pmic.yaml b/Documentation/devicetree/bindings/mfd/rohm,bd9576-pmic.yaml new file mode 100644 index 000000000000..6483860da955 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/rohm,bd9576-pmic.yaml @@ -0,0 +1,123 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/rohm,bd9576-pmic.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ROHM BD9576MUF and BD9573MUF Power Management Integrated Circuit bindings + +maintainers: + - Matti Vaittinen + +description: | + BD9576MUF and BD9573MUF are power management ICs primarily intended for + powering the R-Car series processors. + The IC provides 6 power outputs with configurable sequencing and safety + monitoring. A watchdog logic with slow ping/windowed modes is also included. + +properties: + compatible: + enum: + - rohm,bd9576 + - rohm,bd9573 + + reg: + description: + I2C slave address. + maxItems: 1 + + interrupts: + maxItems: 1 + + rohm,vout1-en-low: + description: + BD9576 and BD9573 VOUT1 regulator enable state can be individually + controlled by a GPIO. This is dictated by state of vout1-en pin during + the PMIC startup. If vout1-en is LOW during PMIC startup then the VOUT1 + enable sate is controlled via this pin. Set this property if vout1-en + is wired to be down at PMIC start-up. + type: boolean + + rohm,vout1-en-gpios: + description: + GPIO specifier to specify the GPIO connected to vout1-en for vout1 ON/OFF + state control. + maxItems: 1 + + rohm,ddr-sel-low: + description: + The BD9576 and BD9573 output voltage for DDR can be selected by setting + the ddr-sel pin low or high. Set this property if ddr-sel is grounded. + type: boolean + + rohm,watchdog-enable-gpios: + description: The GPIO line used to enable the watchdog. + maxItems: 1 + + rohm,watchdog-ping-gpios: + description: The GPIO line used to ping the watchdog. + maxItems: 1 + + rohm,hw-timeout-ms: + maxItems: 2 + description: + Watchog timeout in milliseconds. If single value is given it is + the maximum timeout. Eg. if pinging watchdog is not done within this time + limit the watchdog will be triggered. If two values are given watchdog + is configured in "window mode". Then first value is limit for short-ping + Eg. if watchdog is pinged sooner than that the watchdog will trigger. + When two values is given the second value is the maximum timeout. + # (HW) minimum for short timeout is 2ms, maximum 220 ms. + # (HW) minimum for max timeout is 4ms, maximum 4416 ms. + + regulators: + $ref: ../regulator/rohm,bd9576-regulator.yaml + description: + List of child nodes that specify the regulators. + +required: + - compatible + - reg + - regulators + +additionalProperties: false + +examples: + - | + #include + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + pmic: pmic@30 { + compatible = "rohm,bd9576"; + reg = <0x30>; + rohm,vout1-en-low; + rohm,vout1-en-gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>; + rohm,ddr-sel-low; + rohm,watchdog-enable-gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>; + rohm,watchdog-ping-gpios = <&gpio2 7 GPIO_ACTIVE_HIGH>; + rohm,hw-timeout-ms = <150>, <2300>; + + regulators { + boost1: regulator-vd50 { + regulator-name = "VD50"; + }; + buck1: regulator-vd18 { + regulator-name = "VD18"; + }; + buck2: regulator-vdddr { + regulator-name = "VDDDR"; + }; + buck3: regulator-vd10 { + regulator-name = "VD10"; + }; + ldo: regulator-voutl1 { + regulator-name = "VOUTL1"; + }; + sw: regulator-vouts1 { + regulator-name = "VOUTS1"; + }; + }; + }; + }; -- 2.25.4 -- Matti Vaittinen, Linux device drivers ROHM Semiconductors, Finland SWDC Kiviharjunlenkki 1E 90220 OULU FINLAND ~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~ Simon says - in Latin please. ~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~ Thanks to Simon Glass for the translation =]