[U-Boot] [PATCH 3/3] dt: bcm63158: watchdog should use a 50Mhz clock

[Stefan Roese]

On 03.05.19 19:43, Philippe Reynes wrote:
> The watchdog should use a clock at 50 Mhz, so
> instead of using the clock osc (200 Mhz), we
> define a reference clock at 50Mhz and use it
> for both watchdog.
> 
> Signed-off-by: Philippe Reynes <philippe.reynes at softathome.com>

Just curious: Why is this the case? Is this also what's done in
the Linux DT version?

Other than that:

Reviewed-by: Stefan Roese <sr at denx.de>

Thanks,
Stefan

> ---
>   arch/arm/dts/bcm63158.dtsi | 10 ++++++++--
>   1 file changed, 8 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm/dts/bcm63158.dtsi b/arch/arm/dts/bcm63158.dtsi
> index 4b2eaee..175af38 100644
> --- a/arch/arm/dts/bcm63158.dtsi
> +++ b/arch/arm/dts/bcm63158.dtsi
> @@ -66,6 +66,12 @@
>   			clock-frequency = <0xbebc200>;
>   			u-boot,dm-pre-reloc;
>   		};
> +
> +		refclk50mhz: refclk50mhz {
> +			compatible = "fixed-clock";
> +			#clock-cells = <0>;
> +			clock-frequency = <50000000>;
> +		};
>   	};
>   
>   	ubus {
> @@ -92,13 +98,13 @@
>   		wdt1: watchdog at ff800480 {
>   			compatible = "brcm,bcm6345-wdt";
>   			reg = <0x0 0xff800480 0x0 0x14>;
> -			clocks = <&periph_osc>;
> +			clocks = <&refclk50mhz>;
>   		};
>   
>   		wdt2: watchdog at ff8004c0 {
>   			compatible = "brcm,bcm6345-wdt";
>   			reg = <0x0 0xff8004c0 0x0 0x14>;
> -			clocks = <&periph_osc>;
> +			clocks = <&refclk50mhz>;
>   		};
>   
>   		wdt-reboot {
> 

Viele Grüße,
Stefan

-- 
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-51 Fax: (+49)-8142-66989-80 Email: sr at denx.de