lkml.org 
[lkml]   [2020]   [Aug]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 07/33] ARM: dts: exynos: Correct S3C RTC bindings in SMDKv310
Date
The S3C RTC requires 32768 Hz clock as input which is provided by PMIC.
However there is no clock provided for the PMIC and the driver registers
the clock as 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 allows to enable the S3C RTC and fixes dtbs_check warnings:

arch/arm/boot/dts/exynos4210-smdkv310.dt.yaml: rtc@10070000: clocks: [[5, 346]] is too short
arch/arm/boot/dts/exynos4210-smdkv310.dt.yaml: rtc@10070000: clock-names: ['rtc'] is too short

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
---
arch/arm/boot/dts/exynos4210-smdkv310.dts | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/arch/arm/boot/dts/exynos4210-smdkv310.dts b/arch/arm/boot/dts/exynos4210-smdkv310.dts
index 77fc11e593ad..0b0e86737b26 100644
--- a/arch/arm/boot/dts/exynos4210-smdkv310.dts
+++ b/arch/arm/boot/dts/exynos4210-smdkv310.dts
@@ -40,6 +40,13 @@
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>;
+ };
};
};

@@ -148,6 +155,11 @@
};
};

+&rtc {
+ clocks = <&clock CLK_RTC>, <&pmic_ap_clk>;
+ clock-names = "rtc", "rtc_src";
+};
+
&sdhci_2 {
bus-width = <4>;
pinctrl-names = "default";
--
2.17.1
\
 
 \ /
  Last update: 2020-08-30 16:14    [W:0.391 / U:1.664 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site