[PATCH V4 3/3] rtc: omap: Support regulator supply for RTC
From: nm@ti.com (Nishanth Menon)
Date: 2014-10-28 14:02:45
Also in:
linux-devicetree, linux-omap
On 10/28/2014 04:58 AM, Lokesh Vutla wrote:
quoted hunk
Certain SoCs such as DRA7, RTC is an independent voltage domain of it's own and on platforms such as DRA7-evm, this may be supplied by individual regulator on it's own. So make the OMAP RTC driver support a power regulator. Signed-off-by: Lokesh Vutla <redacted> --- - Dropped the Reviewed-by tags as this patch is changed from previous version. Documentation/devicetree/bindings/rtc/rtc-omap.txt | 6 ++++ drivers/rtc/rtc-omap.c | 41 +++++++++++++++++++++- 2 files changed, 46 insertions(+), 1 deletion(-)diff --git a/Documentation/devicetree/bindings/rtc/rtc-omap.txt b/Documentation/devicetree/bindings/rtc/rtc-omap.txt index 750efd4..c1d84ac 100644 --- a/Documentation/devicetree/bindings/rtc/rtc-omap.txt +++ b/Documentation/devicetree/bindings/rtc/rtc-omap.txt@@ -15,6 +15,9 @@ Required properties: Optional properties: - ti,system-power-controller: whether the rtc is controlling the system power through pmic_power_en +- vrtc-supply: phandle to the regulator device tree node. +- vrtc-minuV: Minimum required voltage in uV, If default voltage needs to be changed +- vrtc-maxuV: Maximum acceptable voltage in uV, If default voltage needs to be changed Example:@@ -25,4 +28,7 @@ rtc at 1c23000 { 19>; interrupt-parent = <&intc>; ti,system-power-controller; + vrtc-supply = <&ldo9_reg>; + vrtc-minuV = <1050000>; + vrtc-maxuV = <1050000>;
why would we want to duplicate machine constraints that regulators already have? if there is a constant voltage needed, then it should be compatible property as it is not really a configuration option, right? [...] -- Regards, Nishanth Menon