From 48bb5409f9de767d51641522ea4de6024ec92c95 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Mon, 7 Sep 2020 18:11:27 +0200 Subject: [PATCH] ARM: dts: s5pv210: add RTC 32 KHz clock in Aries family 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 Tested-by: Jonathan Bakker Link: https://lore.kernel.org/r/20200907161141.31034-12-krzk@kernel.org --- arch/arm/boot/dts/s5pv210-aries.dtsi | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm/boot/dts/s5pv210-aries.dtsi b/arch/arm/boot/dts/s5pv210-aries.dtsi index 6ba23562da464..86c3b26fd21e3 100644 --- a/arch/arm/boot/dts/s5pv210-aries.dtsi +++ b/arch/arm/boot/dts/s5pv210-aries.dtsi @@ -47,6 +47,13 @@ }; }; + pmic_ap_clk: clock-0 { + /* Workaround for missing clock on PMIC */ + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <32768>; + }; + bt_codec: bt_sco { compatible = "linux,bt-sco"; #sound-dai-cells = <0>; @@ -825,6 +832,11 @@ samsung,pwm-outputs = <1>; }; +&rtc { + clocks = <&clocks CLK_RTC>, <&pmic_ap_clk>; + clock-names = "rtc", "rtc_src"; +}; + &sdhci1 { #address-cells = <1>; #size-cells = <0>; -- 2.39.5