diff mbox series

[07/33] ARM: dts: exynos: Correct S3C RTC bindings in SMDKv310

Message ID 20200830135200.24304-7-krzk@kernel.org (mailing list archive)
State New, archived
Headers show
Series [01/33] ARM: dts: exynos: Silence i2c-gpio dtschema warning in Galaxy I9100 | expand

Commit Message

Krzysztof Kozlowski Aug. 30, 2020, 1:51 p.m. UTC 
The S3C RTC requires 32768 Hz clock as input which is provided by PMIC.
However there is no clock provided for the PMIC and the driver registers
the clock as 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 allows to enable the S3C RTC and fixes dtbs_check warnings:

  arch/arm/boot/dts/exynos4210-smdkv310.dt.yaml: rtc@10070000: clocks: [[5, 346]] is too short
  arch/arm/boot/dts/exynos4210-smdkv310.dt.yaml: rtc@10070000: clock-names: ['rtc'] is too short

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 arch/arm/boot/dts/exynos4210-smdkv310.dts | 12 ++++++++++++
 1 file changed, 12 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm/boot/dts/exynos4210-smdkv310.dts b/arch/arm/boot/dts/exynos4210-smdkv310.dts
index 77fc11e593ad..0b0e86737b26 100644
--- a/arch/arm/boot/dts/exynos4210-smdkv310.dts
+++ b/arch/arm/boot/dts/exynos4210-smdkv310.dts
@@ -40,6 +40,13 @@ 
 			compatible = "samsung,clock-xusbxti";
 			clock-frequency = <24000000>;
 		};
+
+		pmic_ap_clk: pmic-ap-clk {
+			/* Workaround for missing clock on PMIC */
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <32768>;
+		};
 	};
 };
 
@@ -148,6 +155,11 @@ 
 	};
 };
 
+&rtc {
+	clocks = <&clock CLK_RTC>, <&pmic_ap_clk>;
+	clock-names = "rtc", "rtc_src";
+};
+
 &sdhci_2 {
 	bus-width = <4>;
 	pinctrl-names = "default";