From ebb105b59c7566a249cf0ee1cfc86386f04cd442 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Mon, 7 Sep 2020 18:11:28 +0200 Subject: ARM: dts: s5pv210: add RTC 32 KHz clock in Goni 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 Link: https://lore.kernel.org/r/20200907161141.31034-13-krzk@kernel.org --- arch/arm/boot/dts/s5pv210-goni.dts | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/arch/arm/boot/dts/s5pv210-goni.dts b/arch/arm/boot/dts/s5pv210-goni.dts index fbbd93707404..c8714bf0b6e4 100644 --- a/arch/arm/boot/dts/s5pv210-goni.dts +++ b/arch/arm/boot/dts/s5pv210-goni.dts @@ -33,6 +33,13 @@ 0x50000000 0x08000000>; }; + pmic_ap_clk: clock-0 { + /* Workaround for missing clock on PMIC */ + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <32768>; + }; + regulators { compatible = "simple-bus"; #address-cells = <1>; @@ -224,6 +231,11 @@ regulator-max-microvolt = <1200000>; regulator-always-on; }; + + ap32khz_reg: EN32KHz-AP { + regulator-name = "32KHz AP"; + regulator-always-on; + }; }; }; }; @@ -308,6 +320,11 @@ status = "okay"; }; +&rtc { + clocks = <&clocks CLK_RTC>, <&pmic_ap_clk>; + clock-names = "rtc", "rtc_src"; +}; + &sdhci0 { bus-width = <4>; non-removable; -- cgit v1.2.3