This commit introduces the nxp,battery-backed property to the nxp,pcf2127 Device Tree bindings. This flag indicates that the RTC is battery-backed and forces the driver to enable the battery switch-over function, but only if no other mode is already configured. With the PCF2131, the battery switch-over is disabled by default. If the battery switch-over is not enabled by the bootloader or firmware, this property ensures that the RTC can function correctly when powered by the battery. Signed-off-by: Philipp Rosenberger <p.rosenberger@xxxxxxxxxx> --- Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml b/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml index 2d9fe5a75b06..87ba16346fb4 100644 --- a/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml +++ b/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml @@ -30,6 +30,13 @@ properties: reset-source: true + nxp,battery-backed: + description: | + Indicates that the RTC is battery-backed. This property forces + the driver to enable the battery switch-over function, but only if + no other mode is already configured. + $ref: /schemas/types.yaml#/definitions/flag + required: - compatible - reg -- 2.39.5
