The S3C RTC requires 32768 Hz clock as input which is provided by PMIC.
However there is no such clock provider but rather a regulator driver
which registers the clock as a regulator. This is an old driver which
will not be updated so add a workaround - a fixed-clock to fill missing
clock phandle reference in S3C RTC.
This fixes dtbs_check warnings:
rtc@e2800000: clocks: [[2, 145]] is too short
rtc@e2800000: clock-names: ['rtc'] is too short
Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
---
arch/arm/boot/dts/s5pv210-aries.dtsi | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/arm/boot/dts/s5pv210-aries.dtsi b/arch/arm/boot/dts/s5pv210-aries.dtsi
index 6ba23562da46..86c3b26fd21e 100644
--- a/arch/arm/boot/dts/s5pv210-aries.dtsi
+++ b/arch/arm/boot/dts/s5pv210-aries.dtsi
@@ -47,6 +47,13 @@
};
};
+ pmic_ap_clk: clock-0 {
+ /* Workaround for missing clock on PMIC */
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <32768>;
+ };
+
bt_codec: bt_sco {
compatible = "linux,bt-sco";
#sound-dai-cells = <0>;
@@ -825,6 +832,11 @@
samsung,pwm-outputs = <1>;
};
+&rtc {
+ clocks = <&clocks CLK_RTC>, <&pmic_ap_clk>;
+ clock-names = "rtc", "rtc_src";
+};
+
&sdhci1 {
#address-cells = <1>;
#size-cells = <0>;
--
2.17.1
