ARM: dts: s5pv210: add RTC 32 KHz clock in Torbreck

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 <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200907161141.31034-16-krzk@kernel.org

diff --git a/arch/arm/boot/dts/s5pv210-torbreck.dts b/arch/arm/boot/dts/s5pv210-torbreck.dts
index cd25e72ccd84695218e5c4e2d9b311dcc00a5fd9..e182597376847196bfefedf4b6ddd03442d975c1 100644 (file)
--- a/arch/arm/boot/dts/s5pv210-torbreck.dts
+++ b/arch/arm/boot/dts/s5pv210-torbreck.dts
@@ -30,6 +30,13 @@
                device_type = "memory";
                reg = <0x20000000 0x20000000>;
        };
+
+       pmic_ap_clk: clock-0 {
+               /* Workaround for missing PMIC and its clock */
+               compatible = "fixed-clock";
+               #clock-cells = <0>;
+               clock-frequency = <32768>;
+       };
 };
 
 &xusbxti {
@@ -54,6 +61,8 @@
 
 &rtc {
        status = "okay";
+       clocks = <&clocks CLK_RTC>, <&pmic_ap_clk>;
+       clock-names = "rtc", "rtc_src";
 };
 
 &sdhci0 {