linux-kernel - Re: [PATCH] ARM: at91/dt: declare sckc node on at91sam9g45

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Message-ID: <20140911205454.GG3131@piout.net>
Date:	Thu, 11 Sep 2014 22:54:54 +0200
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Boris BREZILLON <boris.brezillon@...e-electrons.com>
Cc:	Nicolas Ferre <nicolas.ferre@...el.com>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Andrew Victor <linux@...im.org.za>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: at91/dt: declare sckc node on at91sam9g45

On 09/09/2014 at 12:14:20 +0200, Boris Brezillon wrote :
> Declare the SCKC (Slow Clock Configuration) block and its clks.
> Make use of the clk32k clk instead of slow_osc where appropriate.
> 
> Signed-off-by: Boris BREZILLON <boris.brezillon@...e-electrons.com>
Acked-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>

> ---
>  arch/arm/boot/dts/at91sam9g45.dtsi | 30 ++++++++++++++++++++++++++++--
>  1 file changed, 28 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/at91sam9g45.dtsi b/arch/arm/boot/dts/at91sam9g45.dtsi
> index 9d4d0a1..68a457b 100644
> --- a/arch/arm/boot/dts/at91sam9g45.dtsi
> +++ b/arch/arm/boot/dts/at91sam9g45.dtsi
> @@ -159,7 +159,7 @@
>  					compatible = "atmel,at91rm9200-clk-master";
>  					#clock-cells = <0>;
>  					interrupts-extended = <&pmc AT91_PMC_MCKRDY>;
> -					clocks = <&slow_xtal>, <&main>, <&plladiv>, <&utmi>;
> +					clocks = <&clk32k>, <&main>, <&plladiv>, <&utmi>;
>  					atmel,clk-output-range = <0 133333333>;
>  					atmel,clk-divisors = <1 2 4 3>;
>  				};
> @@ -175,7 +175,7 @@
>  					#address-cells = <1>;
>  					#size-cells = <0>;
>  					interrupt-parent = <&pmc>;
> -					clocks = <&slow_xtal>, <&main>, <&plladiv>, <&utmi>, <&mck>;
> +					clocks = <&clk32k>, <&main>, <&plladiv>, <&utmi>, <&mck>;
>  
>  					prog0: prog0 {
>  						#clock-cells = <0>;
> @@ -1160,6 +1160,32 @@
>  				};
>  			};
>  
> +			sckc@...ffd50 {
> +				compatible = "atmel,at91sam9x5-sckc";
> +				reg = <0xfffffd50 0x4>;
> +
> +				slow_osc: slow_osc {
> +					compatible = "atmel,at91sam9x5-clk-slow-osc";
> +					#clock-cells = <0>;
> +					atmel,startup-time-usec = <1200000>;
> +					clocks = <&slow_xtal>;
> +				};
> +
> +				slow_rc_osc: slow_rc_osc {
> +					compatible = "atmel,at91sam9x5-clk-slow-rc-osc";
> +					#clock-cells = <0>;
> +					atmel,startup-time-usec = <75>;
> +					clock-frequency = <32768>;
> +					clock-accuracy = <50000000>;
> +				};
> +
> +				clk32k: slck {
> +					compatible = "atmel,at91sam9x5-clk-slow";
> +					#clock-cells = <0>;
> +					clocks = <&slow_rc_osc &slow_osc>;
> +				};
> +			};
> +
>  			rtc@...ffdb0 {
>  				compatible = "atmel,at91rm9200-rtc";
>  				reg = <0xfffffdb0 0x10>;
> -- 
> 1.9.1
> 

-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
--
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