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ARM: dts: s5pv210: add RTC 32 KHz clock in Goni

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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 <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200907161141.31034-13-krzk@kernel.org
This commit is contained in:
Krzysztof Kozlowski 2020-09-07 18:11:28 +02:00
parent 086c4498b0
commit ebb105b59c
1 changed files with 17 additions and 0 deletions
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17
arch/arm/boot/dts/s5pv210-goni.dts
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@ -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;