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Subject[PATCH 10/25] ARM: dts: s5pv210: add RTC 32 KHz clock in Aquilla
Date
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@kernel.org>
---
arch/arm/boot/dts/s5pv210-aquila.dts | 17 +++++++++++++++++
1 file changed, 17 insertions(+)

diff --git a/arch/arm/boot/dts/s5pv210-aquila.dts b/arch/arm/boot/dts/s5pv210-aquila.dts
index 14969b6529e8..eaeb0e921aaa 100644
--- a/arch/arm/boot/dts/s5pv210-aquila.dts
+++ b/arch/arm/boot/dts/s5pv210-aquila.dts
@@ -32,6 +32,13 @@
0x40000000 0x18000000>;
};

+ 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>;
@@ -228,6 +235,11 @@
regulator-always-on;
};

+ ap32khz_reg: EN32KHz-AP {
+ regulator-name = "32KHz AP";
+ regulator-always-on;
+ };
+
vichg_reg: ENVICHG {
regulator-name = "VICHG";
};
@@ -326,6 +338,11 @@
status = "okay";
};

+&rtc {
+ clocks = <&clocks CLK_RTC>, <&pmic_ap_clk>;
+ clock-names = "rtc", "rtc_src";
+};
+
&sdhci0 {
bus-width = <4>;
non-removable;
--
2.17.1
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