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

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Date:	Mon, 12 May 2014 16:54:58 +0200
From:	Nicolas Ferre <nicolas.ferre@...el.com>
To:	Boris BREZILLON <boris.brezillon@...e-electrons.com>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.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 16:25, Boris BREZILLON :
> 
> 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>

Ok, thanks guys, I have just updated the at91-3.16-dt2 branch with this
modification.

Bye,

>> ---
>> 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>;
>>  				};
>>  
> 


-- 
Nicolas Ferre
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