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 <[email protected]> --- Cc: Russell King <[email protected]> Cc: Jason Cooper <[email protected]> Cc: [email protected] Cc: [email protected] --- arch/arm/boot/dts/dove-cubox.dts | 51 +++++++++++++++++++++++++++++++++++++- 1 files changed, 50 insertions(+), 1 deletions(-) diff --git a/arch/arm/boot/dts/dove-cubox.dts b/arch/arm/boot/dts/dove-cubox.dts index 7e3065a..5cae2ab 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"; -- 1.7.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
