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authorKeerthy <j-keerthy@ti.com>2015-08-18 15:11:14 +0530
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>2015-09-05 19:37:20 +0200
commitfff51e771eafc3b4fa6daf1372fd4a4023bb402b (patch)
treeeeae766e6c347c400ccb2dd54c43d979bf10b466
parentff02c0444b83201ff76cc49deccac8cf2bffc7bc (diff)
ARM: dts: AM437x: Add the internal and external clock nodes for rtc
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> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
-rw-r--r--Documentation/devicetree/bindings/rtc/rtc-omap.txt4
-rw-r--r--arch/arm/boot/dts/am4372.dtsi2
-rw-r--r--arch/arm/boot/dts/am437x-gp-evm.dts13
-rw-r--r--arch/arm/boot/dts/am437x-idk-evm.dts9
-rw-r--r--arch/arm/boot/dts/am437x-sk-evm.dts9
5 files changed, 37 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/rtc/rtc-omap.txt b/Documentation/devicetree/bindings/rtc/rtc-omap.txt
index 43a83668673a..bf7d11ae9bea 100644
--- a/Documentation/devicetree/bindings/rtc/rtc-omap.txt
+++ b/Documentation/devicetree/bindings/rtc/rtc-omap.txt
@@ -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";
};
diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi
index 564900b9fcce..0447c04a40cc 100644
--- a/arch/arm/boot/dts/am4372.dtsi
+++ b/arch/arm/boot/dts/am4372.dtsi
@@ -358,6 +358,8 @@
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";
};
diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
index 215775dc6948..22038f21f228 100644
--- a/arch/arm/boot/dts/am437x-gp-evm.dts
+++ b/arch/arm/boot/dts/am437x-gp-evm.dts
@@ -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";
+};
diff --git a/arch/arm/boot/dts/am437x-idk-evm.dts b/arch/arm/boot/dts/am437x-idk-evm.dts
index 378344271746..af25801418b4 100644
--- a/arch/arm/boot/dts/am437x-idk-evm.dts
+++ b/arch/arm/boot/dts/am437x-idk-evm.dts
@@ -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";
};
diff --git a/arch/arm/boot/dts/am437x-sk-evm.dts b/arch/arm/boot/dts/am437x-sk-evm.dts
index 22af44894c66..7da7c2da4af1 100644
--- a/arch/arm/boot/dts/am437x-sk-evm.dts
+++ b/arch/arm/boot/dts/am437x-sk-evm.dts
@@ -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";
};