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ARM: dts: exynos: Correct S3C RTC bindings in Tiny4412

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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 fixed-clock.  This fixes S3C RTC and
silences dtbs_check warnings like:

  arch/arm/boot/dts/exynos4412-tiny4412.dt.yaml: rtc@10070000: clocks: [[7, 346]] is too short
  arch/arm/boot/dts/exynos4412-tiny4412.dt.yaml: rtc@10070000: clock-names: ['rtc'] is too short

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200830135200.24304-32-krzk@kernel.org
This commit is contained in:
Krzysztof Kozlowski 2020-08-30 15:51:59 +02:00
parent 1716af2499
commit 6511f11a49
1 changed files with 9 additions and 0 deletions
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9
arch/arm/boot/dts/exynos4412-tiny4412.dts
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@ -65,6 +65,13 @@ xusbxti {
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>;
};
};
panel {
@ -110,6 +117,8 @@ lcdc_output: endpoint {
&rtc {
status = "okay";
clocks = <&clock CLK_RTC>, <&pmic_ap_clk>;
clock-names = "rtc", "rtc_src";
};
&sdhci_2 {