[PATCH v3 1/2] mfd: dt-bindings: add the description about dvs gpio for rk808
From: Chris Zhong <hidden>
Date: 2014-12-15 03:08:33
Also in:
lkml
Subsystem:
multifunction devices (mfd), open firmware and flattened device tree bindings, the rest · Maintainers:
Lee Jones, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
add the description about dvs1, dvs2, dvsok, and add the example. Signed-off-by: Chris Zhong <redacted> Reviewed-by: Doug Anderson <redacted> --- Changes in v3: - Modify the syntax error Changes in v2: - increase description about dvs pins Documentation/devicetree/bindings/mfd/rk808.txt | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/mfd/rk808.txt b/Documentation/devicetree/bindings/mfd/rk808.txt
index 9e6e259..9cc2941 100644
--- a/Documentation/devicetree/bindings/mfd/rk808.txt
+++ b/Documentation/devicetree/bindings/mfd/rk808.txt@@ -24,6 +24,14 @@ Optional properties: - vcc10-supply: The input supply for LDO_REG6 - vcc11-supply: The input supply for LDO_REG8 - vcc12-supply: The input supply for SWITCH_REG2 +- dvs-gpios: buck1/2 can be controlled by gpio dvs, this is GPIO specifiers + for 2 host gpio's used for dvs. The format of the gpio specifier depends in + the gpio controller. If DVS GPIOs aren't present, voltage changes will happen + very quickly with no slow ramp time. +- dvsok-gpios: if we use dvs gpio to control buck1/2, this gpio will be pull + high, once RK808 completed the adjustment of voltage. If the DVSOK isn't + present, we'll just delay based on whatever is specified in the regulator + constraints. Regulators: All the regulators of RK808 to be instantiated shall be listed in a child node named 'regulators'. Each regulator is represented
@@ -55,7 +63,10 @@ Example: interrupt-parent = <&gpio0>; interrupts = <4 IRQ_TYPE_LEVEL_LOW>; pinctrl-names = "default"; - pinctrl-0 = <&pmic_int>; + pinctrl-0 = <&pmic_int &dvs_ok &dvs_1 &dvs_2>; + dvsok-gpios = <&gpio7 9 GPIO_ACTIVE_HIGH>; + dvs-gpios = <&gpio7 11 GPIO_ACTIVE_HIGH>, + <&gpio7 15 GPIO_ACTIVE_HIGH>; reg = <0x1b>; rockchip,system-power-controller; wakeup-source;
--
1.9.1
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