From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Zhong Subject: [PATCH 2/2] dt-bindings: add devicetree bindings for st-pwm regulator Date: Wed, 17 Sep 2014 21:08:00 +0800 Message-ID: <1410959280-29662-3-git-send-email-zyw@rock-chips.com> References: <1410959280-29662-1-git-send-email-zyw@rock-chips.com> Return-path: In-Reply-To: <1410959280-29662-1-git-send-email-zyw@rock-chips.com> Sender: linux-kernel-owner@vger.kernel.org To: dianders@chromium.org, heiko@sntech.de Cc: huangtao@rock-chips.com, cf@rock-chips.com, zhangqing@rock-chips.com, Chris Zhong , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: devicetree@vger.kernel.org Document the st-pwm regulator Signed-off-by: Chris Zhong --- .../devicetree/bindings/regulator/st-pwm.txt | 35 ++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/st-pwm.txt diff --git a/Documentation/devicetree/bindings/regulator/st-pwm.txt b/Documentation/devicetree/bindings/regulator/st-pwm.txt new file mode 100644 index 0000000..38fec1d --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/st-pwm.txt @@ -0,0 +1,35 @@ +st pwm regulator bindings + +Required properties: + - compatible: "pwm-regulator" + - pwms: OF device-tree PWM specification (see PWM binding pwm.txt) + - voltage-table: voltage and duty table, include 2 merbers in each set of + brackets, first one is voltage(unit: uv), the next is duty(unit: percent) + - pwm-reg-period: duration (in nanoseconds) of one cycle + +Any property defined as part of the core regulator binding defined in +regulator.txt can also be used. + +Example: + pwm_regulator { + compatible = "st,b2105-pwm-regulator; + pwms = <&pwm1 0 1000000 0>; + + voltage-table = <1114000 0>, + <1095000 10>, + <1076000 20>, + <1056000 30>, + <1036000 40>, + <1016000 50>; + + pwm-reg-period = <8448>; + regulators { + vdd_logic: pwm-regulator { + regulator-always-on; + regulator-boot-on; + regulator-min-microvolt = <1016000>; + regulator-max-microvolt = <1114000>; + regulator-name = "vdd_logic"; + }; + }; + }; -- 1.7.9.5