linux-kernel - Re: [PATCHv2] ARM: at91/dt: sam9261: Fix PLL output ranges and other clocks divisors

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Message-ID: <5370D9E0.4000509@free-electrons.com>
Date:	Mon, 12 May 2014 16:25:36 +0200
From:	Boris BREZILLON <boris.brezillon@...e-electrons.com>
To:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Nicolas Ferre <nicolas.ferre@...el.com>
CC:	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCHv2] ARM: at91/dt: sam9261: Fix PLL output ranges and other
 clocks divisors


On 12/05/2014 16:22, Alexandre Belloni wrote:
> Argument 3 (OUT) and 4 (ICPLL) of the atmel,pll-clk-output-ranges were missing.
> Also, the at91sam9261 doesn't really have a by 3 divisor.
>
> Signed-off-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@...e-electrons.com>
> ---
> Changed in v2:
> After getting feedback from the atmel HW engineers, it appears that PLLB is not
> the same as PLLA despite what the datasheet seems to imply. The patch is updated
> to reflect that.
>
>  arch/arm/boot/dts/at91sam9261.dtsi | 11 ++++++-----
>  1 file changed, 6 insertions(+), 5 deletions(-)
>
> diff --git a/arch/arm/boot/dts/at91sam9261.dtsi b/arch/arm/boot/dts/at91sam9261.dtsi
> index 561addceb81e..44d9e5ab09c3 100644
> --- a/arch/arm/boot/dts/at91sam9261.dtsi
> +++ b/arch/arm/boot/dts/at91sam9261.dtsi
> @@ -564,7 +564,8 @@
>  					reg = <0>;
>  					atmel,clk-input-range = <1000000 32000000>;
>  					#atmel,pll-clk-output-range-cells = <4>;
> -					atmel,pll-clk-output-ranges = <80000000 200000000 190000000 240000000>;
> +					atmel,pll-clk-output-ranges = <80000000 200000000 0 1>,
> +								<190000000 240000000 2 1>;
>  				};
>  
>  				pllb: pllbck {
> @@ -573,9 +574,9 @@
>  					interrupts-extended = <&pmc AT91_PMC_LOCKB>;
>  					clocks = <&main>;
>  					reg = <1>;
> -					atmel,clk-input-range = <1000000 32000000>;
> +					atmel,clk-input-range = <1000000 5000000>;
>  					#atmel,pll-clk-output-range-cells = <4>;
> -					atmel,pll-clk-output-ranges = <80000000 200000000 190000000 240000000>;
> +					atmel,pll-clk-output-ranges = <70000000 130000000 1 1>;
>  				};
>  
>  				mck: masterck {
> @@ -584,13 +585,13 @@
>  					interrupts-extended = <&pmc AT91_PMC_MCKRDY>;
>  					clocks = <&clk32k>, <&main>, <&plla>, <&pllb>;
>  					atmel,clk-output-range = <0 94000000>;
> -					atmel,clk-divisors = <1 2 4 3>;
> +					atmel,clk-divisors = <1 2 4 0>;
>  				};
>  
>  				usb: usbck {
>  					compatible = "atmel,at91rm9200-clk-usb";
>  					#clock-cells = <0>;
> -					atmel,clk-divisors = <1 2 4 3>;
> +					atmel,clk-divisors = <1 2 4 0>;
>  					clocks = <&pllb>;
>  				};
>  

-- 
Boris Brezillon, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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