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 S3C RTC and silences dtbs_check warnings like:
arch/arm/boot/dts/exynos5410-smdk5410.dt.yaml: rtc@101e0000: clocks: [[5, 317]] is too short arch/arm/boot/dts/exynos5410-smdk5410.dt.yaml: rtc@101e0000: clock-names: ['rtc'] is too short Signed-off-by: Krzysztof Kozlowski <[email protected]> --- arch/arm/boot/dts/exynos5410-smdk5410.dts | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm/boot/dts/exynos5410-smdk5410.dts b/arch/arm/boot/dts/exynos5410-smdk5410.dts index 5282b5deca86..2a3ade77a2de 100644 --- a/arch/arm/boot/dts/exynos5410-smdk5410.dts +++ b/arch/arm/boot/dts/exynos5410-smdk5410.dts @@ -29,6 +29,13 @@ #clock-cells = <0>; }; + pmic_ap_clk: pmic-ap-clk { + /* Workaround for missing PMIC and its clock */ + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <32768>; + }; + firmware@2037000 { compatible = "samsung,secure-firmware"; reg = <0x02037000 0x1000>; @@ -79,6 +86,11 @@ }; }; +&rtc { + clocks = <&clock CLK_RTC>, <&pmic_ap_clk>; + clock-names = "rtc", "rtc_src"; +}; + &sromc { pinctrl-names = "default"; pinctrl-0 = <&srom_ctl>, <&srom_ebi>; -- 2.17.1
