[PATCH v8 11/13] arm64: dts: bcm2712: Add external clock for RP1 chipset on Rpi5

Andrea della Porta andrea.porta at suse.com
Wed Apr 16 11:41:37 PDT 2025


Hi Stefan,

On 13:55 Mon 14 Apr     , Stefan Wahren wrote:
> Hi Andrea,
> 
> Am 19.03.25 um 22:52 schrieb Andrea della Porta:
> > The RP1 found on Raspberry Pi 5 board needs an external crystal at 50MHz.
> > Add clk_rp1_xosc node to provide that.
> > 
> > Signed-off-by: Andrea della Porta <andrea.porta at suse.com>
> > Reviewed-by: Florian Fainelli <florian.fainelli at broadcom.com>
> i'm fine with the patch content, but I think this is necessary before
> Patch 9 is applied?

True. Thanks for pointing that out.

Cheers,
Andrea

> > ---
> >   arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts | 7 +++++++
> >   1 file changed, 7 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
> > index fbc56309660f..1850a575e708 100644
> > --- a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
> > +++ b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
> > @@ -16,6 +16,13 @@ chosen: chosen {
> >   		stdout-path = "serial10:115200n8";
> >   	};
> > 
> > +	clk_rp1_xosc: clock-50000000 {
> > +		compatible = "fixed-clock";
> > +		#clock-cells = <0>;
> > +		clock-output-names = "rp1-xosc";
> > +		clock-frequency = <50000000>;
> > +	};
> > +
> >   	/* Will be filled by the bootloader */
> >   	memory at 0 {
> >   		device_type = "memory";
> 



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