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-goni.dts | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/arch/arm/boot/dts/s5pv210-goni.dts b/arch/arm/boot/dts/s5pv210-goni.dts
index fbbd93707404..c8714bf0b6e4 100644
--- a/arch/arm/boot/dts/s5pv210-goni.dts
+++ b/arch/arm/boot/dts/s5pv210-goni.dts
@@ -33,6 +33,13 @@
0x50000000 0x08000000>;
};
+ pmic_ap_clk: clock-0 {
+ /* Workaround for missing clock on PMIC */
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <32768>;
+ };
+
regulators {
compatible = "simple-bus";
#address-cells = <1>;
@@ -224,6 +231,11 @@
regulator-max-microvolt = <1200000>;
regulator-always-on;
};
+
+ ap32khz_reg: EN32KHz-AP {
+ regulator-name = "32KHz AP";
+ regulator-always-on;
+ };
};
};
};
@@ -308,6 +320,11 @@
status = "okay";
};
+&rtc {
+ clocks = <&clocks CLK_RTC>, <&pmic_ap_clk>;
+ clock-names = "rtc", "rtc_src";
+};
+
&sdhci0 {
bus-width = <4>;
non-removable;
--
2.17.1
