[PATCH 14/25] ARM: dts: s5pv210: add RTC 32 KHz clock in SMDKV210

[Krzysztof Kozlowski]

The S3C RTC requires 32768 Hz clock as input which is provided by PMIC.
However the PMIC is not described in DTS at all so at least add
a workaround to model its clock with a fixed-clock.

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 <k...@kernel.org>
---
 arch/arm/boot/dts/s5pv210-smdkv210.dts | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm/boot/dts/s5pv210-smdkv210.dts 
b/arch/arm/boot/dts/s5pv210-smdkv210.dts
index 84b38f185199..1f20622da719 100644
--- a/arch/arm/boot/dts/s5pv210-smdkv210.dts
+++ b/arch/arm/boot/dts/s5pv210-smdkv210.dts
@@ -31,6 +31,13 @@
                reg = <0x20000000 0x40000000>;
        };
 
+       pmic_ap_clk: clock-0 {
+               /* Workaround for missing PMIC and its clock */
+               compatible = "fixed-clock";
+               #clock-cells = <0>;
+               clock-frequency = <32768>;
+       };
+
        ethernet@18000000 {
                compatible = "davicom,dm9000";
                reg = <0xA8000000 0x2 0xA8000002 0x2>;
@@ -147,6 +154,8 @@
 
 &rtc {
        status = "okay";
+       clocks = <&clocks CLK_RTC>, <&pmic_ap_clk>;
+       clock-names = "rtc", "rtc_src";
 };
 
 &sdhci0 {
-- 
2.17.1