From 53e9cb1dcde882cc667497328eca776a9835f965 Mon Sep 17 00:00:00 2001 From: Sebastian Hesselbarth Date: Tue, 30 Apr 2013 19:24:35 +0200 Subject: [PATCH] ARM: dove: add si5351 clock driver to CuBox DT This patch adds the device tree node for si5351 clock generator and the corresponding oscillator connected to it. It also limits i2c frequency to 100kHz as there are bus locks reported on higher frequencies. Signed-off-by: Sebastian Hesselbarth Signed-off-by: Jason Cooper --- arch/arm/boot/dts/dove-cubox.dts | 51 +++++++++++++++++++++++++++++++- 1 file changed, 50 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/dove-cubox.dts b/arch/arm/boot/dts/dove-cubox.dts index 7e3065abd751..5cae2ab69762 100644 --- a/arch/arm/boot/dts/dove-cubox.dts +++ b/arch/arm/boot/dts/dove-cubox.dts @@ -44,11 +44,60 @@ gpio = <&gpio0 1 0>; }; }; + + clocks { + /* 25MHz reference crystal */ + ref25: oscillator { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <25000000>; + }; + }; }; &uart0 { status = "okay"; }; &sata0 { status = "okay"; }; -&i2c0 { status = "okay"; }; + +&i2c0 { + status = "okay"; + clock-frequency = <100000>; + + si5351: clock-generator { + compatible = "silabs,si5351a-msop"; + reg = <0x60>; + #address-cells = <1>; + #size-cells = <0>; + #clock-cells = <1>; + + /* connect xtal input to 25MHz reference */ + clocks = <&ref25>; + + /* connect xtal input as source of pll0 and pll1 */ + silabs,pll-source = <0 0>, <1 0>; + + clkout0 { + reg = <0>; + silabs,drive-strength = <8>; + silabs,multisynth-source = <0>; + silabs,clock-source = <0>; + silabs,pll-master; + }; + + clkout1 { + reg = <1>; + silabs,drive-strength = <8>; + silabs,multisynth-source = <1>; + silabs,clock-source = <0>; + silabs,pll-master; + }; + + clkout2 { + reg = <2>; + silabs,multisynth-source = <1>; + silabs,clock-source = <0>; + }; + }; +}; &sdio0 { status = "okay"; -- 2.20.1