@@ -16,6 +16,8 @@ Required properties:
Optional properties:
- system-power-controller: whether the rtc is controlling the system power
through pmic_power_en
+- clocks: Any internal or external clocks feeding in to rtc
+- clock-names: Corresponding names of the clocks
Example:
@@ -26,4 +28,6 @@ rtc@1c23000 {
19>;
interrupt-parent = <&intc>;
system-power-controller;
+ clocks = <&clk_32k_rtc>, <&clk_32768_ck>;
+ clock-names = "ext-clk", "int-clk";
};
@@ -336,6 +336,8 @@
interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH
GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
ti,hwmods = "rtc";
+ clocks = <&clk_32768_ck>;
+ clock-names = "int-clk";
status = "disabled";
};
@@ -112,6 +112,13 @@
clock-frequency = <12000000>;
};
+ /* fixed 32k external oscillator clock */
+ clk_32k_rtc: clk_32k_rtc {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <32768>;
+ };
+
sound0: sound@0 {
compatible = "simple-audio-card";
simple-audio-card,name = "AM437x-GP-EVM";
@@ -941,3 +948,9 @@
tx-num-evt = <32>;
rx-num-evt = <32>;
};
+
+&rtc {
+ clocks = <&clk_32k_rtc>, <&clk_32768_ck>;
+ clock-names = "ext-clk", "int-clk";
+ status = "okay";
+};
@@ -110,6 +110,13 @@
gpios = <&gpio4 2 GPIO_ACTIVE_LOW>;
};
};
+
+ /* fixed 32k external oscillator clock */
+ clk_32k_rtc: clk_32k_rtc {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <32768>;
+ };
};
&am43xx_pinmux {
@@ -394,6 +401,8 @@
};
&rtc {
+ clocks = <&clk_32k_rtc>, <&clk_32768_ck>;
+ clock-names = "ext-clk", "int-clk";
status = "okay";
};
@@ -24,6 +24,13 @@
display0 = &lcd0;
};
+ /* fixed 32k external oscillator clock */
+ clk_32k_rtc: clk_32k_rtc {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <32768>;
+ };
+
backlight {
compatible = "pwm-backlight";
pwms = <&ecap0 0 50000 PWM_POLARITY_INVERTED>;
@@ -697,6 +704,8 @@
};
&rtc {
+ clocks = <&clk_32k_rtc>, <&clk_32768_ck>;
+ clock-names = "ext-clk", "int-clk";
status = "okay";
};
rtc can either be supplied from internal 32k clock or external crystal generated 32k clock. Internal clock is SOC specific and the external clock is board dependent. Adding the corresponding nodes. Signed-off-by: Keerthy <j-keerthy@ti.com> --- Documentation/devicetree/bindings/rtc/rtc-omap.txt | 4 ++++ arch/arm/boot/dts/am4372.dtsi | 2 ++ arch/arm/boot/dts/am437x-gp-evm.dts | 13 +++++++++++++ arch/arm/boot/dts/am437x-idk-evm.dts | 9 +++++++++ arch/arm/boot/dts/am437x-sk-evm.dts | 9 +++++++++ 5 files changed, 37 insertions(+)