[PATCH 2/7] riscv: dts: eswin: add clock generator for EIC7700 SoC

[Pinkesh Vaghela]

Hi Conor,

Thanks for your time to review the patch.

On Mon, Jun 15, 2026 at 10:01 PM +0530, Conor Dooley wrote:
> On Mon, Jun 15, 2026 at 05:50:11PM +0530, Pinkesh Vaghela wrote:
> > From: Pritesh Patel <pritesh.patel at einfochips.com>
> >
> > Add clock generator node for EIC7700 SoC.
> > HiFive Premier P550 boards have 24MHz crystal oscillator to provide
> > the input clock.
> >
> > Signed-off-by: Pritesh Patel <pritesh.patel at einfochips.com>
> > Signed-off-by: Pinkesh Vaghela <pinkesh.vaghela at einfochips.com>
> > ---
> >  .../boot/dts/eswin/eic7700-hifive-premier-p550.dts  |  5 +++++
> >  arch/riscv/boot/dts/eswin/eic7700.dtsi              | 13 +++++++++++++
> >  2 files changed, 18 insertions(+)
> >
> > diff --git a/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts
> > b/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts
> > index 131ed1fc6b2e..1fb92f0e7c55 100644
> > --- a/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts
> > +++ b/arch/riscv/boot/dts/eswin/eic7700-hifive-premier-p550.dts
> > @@ -20,6 +20,11 @@ chosen {
> >  	};
> >  };
> >
> > +&xtal {
> > +	clock-frequency = <24000000>;
> > +	clock-output-names = "xtal24m";
> > +};
> > +
> >  &uart0 {
> >  	status = "okay";
> >  };
> > diff --git a/arch/riscv/boot/dts/eswin/eic7700.dtsi
> > b/arch/riscv/boot/dts/eswin/eic7700.dtsi
> > index 430a210f01e6..a7ebb1115958 100644
> > --- a/arch/riscv/boot/dts/eswin/eic7700.dtsi
> > +++ b/arch/riscv/boot/dts/eswin/eic7700.dtsi
> > @@ -4,6 +4,7 @@
> >   */
> >
> >  /dts-v1/;
> > +#include <dt-bindings/clock/eswin,eic7700-clock.h>
> >  #include <dt-bindings/reset/eswin,eic7700-reset.h>
> >
> >  / {
> > @@ -203,6 +204,11 @@ pmu {
> >  				<0x00000000 0x0000000f 0xfffffffc 0x000000ff
> 0x00000078>;
> >  	};
> >
> > +	xtal: oscillator {
> 
> Sashiko feedback here on making this clk-<hz> or clk-<something> should be
> implemented.

We will change this to "clock-24m" in v2 patch

Regards,
Pinkesh

> 
> > +		compatible = "fixed-clock";
> > +		#clock-cells = <0>;
> > +	};
> > +
> >  	soc {
> >  		compatible = "simple-bus";
> >  		ranges;
> > @@ -343,6 +349,13 @@ gpioD: gpio-port at 3 {
> >  			};
> >  		};
> >
> > +		clk: clock-controller at 51828000 {
> > +			compatible = "eswin,eic7700-clock";
> > +			reg = <0x0 0x51828000 0x0 0x300>;
> > +			clocks = <&xtal>;
> > +			#clock-cells = <1>;
> > +		};
> > +
> >  		reset: reset-controller at 51828300 {
> >  			compatible = "eswin,eic7700-reset";
> >  			reg = <0x0 0x51828300 0x0 0x200>;
> > --
> > 2.34.1
> >