From 17222eb932ad2ec67e583179f507982460d81bde Mon Sep 17 00:00:00 2001 From: Derek Basehore Date: Tue, 27 Nov 2018 15:23:31 -0800 Subject: arm64: dts: rockchip: Add 32k clk on rk3399-gru This adds the 32k clock to the RK3399 Gru board file, which is provided by a Silego oscillator on Gru boards. Even though it's not directly used, muxes will end up traversing the entire clk tree on calls to determine_rate if it doesn't exist. This is because the 32k clk is listed as a possible parent on some clks. Since the clk doesn't know about the 32k clk (it was never registered), it triggers a global search for it. This can happen about 40 times per second, which isn't great for power. Signed-off-by: Derek Basehore Reviewed-by: Douglas Anderson [moved clock position and adapted commit message a bit] Signed-off-by: Heiko Stuebner --- arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi') diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi index ca07f6032200..ea607a601a86 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi @@ -262,6 +262,13 @@ pp5000_usb_a_vbus: pp5000 { }; + ap_rtc_clk: ap-rtc-clk { + compatible = "fixed-clock"; + clock-frequency = <32768>; + clock-output-names = "xin32k"; + #clock-cells = <0>; + }; + gpio_keys: gpio-keys { compatible = "gpio-keys"; pinctrl-names = "default"; -- cgit v1.2.3