From eb7e538dceda761baae45e61c10be7d6694b3ce5 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Sun, 30 Aug 2020 15:51:34 +0200 Subject: [PATCH] ARM: dts: exynos: Correct S3C RTC bindings in SMDKv310 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 Link: https://lore.kernel.org/r/20200830135200.24304-7-krzk@kernel.org --- arch/arm/boot/dts/exynos4210-smdkv310.dts | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm/boot/dts/exynos4210-smdkv310.dts b/arch/arm/boot/dts/exynos4210-smdkv310.dts index 77fc11e..0b0e867 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"; -- 2.7.4