[v2,10/18] ARM: dts: dra7xx-clocks: Add missing 32khz clocks used for PHY
diff mbox

Message ID 1401345500-20188-11-git-send-email-kishon@ti.com
State New, archived
Headers show

Commit Message

Kishon Vijay Abraham I May 29, 2014, 6:38 a.m. UTC
Added missing 32khz clock used by PCIe PHY.
The documention for this node can be found @ ../bindings/clock/ti/gate.txt.

Cc: Tony Lindgren <tony@atomide.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kumar Gala <galak@codeaurora.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
 arch/arm/boot/dts/dra7xx-clocks.dtsi |    8 ++++++++
 1 file changed, 8 insertions(+)

Comments

Tero Kristo June 19, 2014, 11:16 a.m. UTC | #1
On 05/29/2014 09:38 AM, Kishon Vijay Abraham I wrote:
> Added missing 32khz clock used by PCIe PHY.
> The documention for this node can be found @ ../bindings/clock/ti/gate.txt.

You can drop the node documentation ref, and rather add a TRM reference 
about hardware details. Other than that, looks good to me.

-Tero

>
> Cc: Tony Lindgren <tony@atomide.com>
> Cc: Rajendra Nayak <rnayak@ti.com>
> Cc: Tero Kristo <t-kristo@ti.com>
> Cc: Paul Walmsley <paul@pwsan.com>
> Cc: Tony Lindgren <tony@atomide.com>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Pawel Moll <pawel.moll@arm.com>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: Kumar Gala <galak@codeaurora.org>
> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
> ---
>   arch/arm/boot/dts/dra7xx-clocks.dtsi |    8 ++++++++
>   1 file changed, 8 insertions(+)
>
> diff --git a/arch/arm/boot/dts/dra7xx-clocks.dtsi b/arch/arm/boot/dts/dra7xx-clocks.dtsi
> index 44993ec..e1bd052 100644
> --- a/arch/arm/boot/dts/dra7xx-clocks.dtsi
> +++ b/arch/arm/boot/dts/dra7xx-clocks.dtsi
> @@ -1165,6 +1165,14 @@
>   		reg = <0x021c>, <0x0220>;
>   	};
>
> +	optfclk_pciephy_32khz: optfclk_pciephy_32khz@4a0093b0 {
> +		compatible = "ti,gate-clock";
> +		clocks = <&sys_32k_ck>;
> +		#clock-cells = <0>;
> +		reg = <0x13b0>;
> +		ti,bit-shift = <8>;
> +	};
> +
>   	optfclk_pciephy_div: optfclk_pciephy_div@4a00821c {
>   		compatible = "ti,divider-clock";
>   		clocks = <&apll_pcie_ck>;
>

--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Kishon Vijay Abraham I June 19, 2014, 1:23 p.m. UTC | #2
Hi Tero,

On Thursday 19 June 2014 04:46 PM, Tero Kristo wrote:
> On 05/29/2014 09:38 AM, Kishon Vijay Abraham I wrote:
>> Added missing 32khz clock used by PCIe PHY.
>> The documention for this node can be found @ ../bindings/clock/ti/gate.txt.
> 
> You can drop the node documentation ref, and rather add a TRM reference about
> hardware details. Other than that, looks good to me.

You mean something like why 32KHz clock is used (**PRCM.PCIE_32K_GFCLK (based
on PRM.SYS_32K) for debounce and wakeup logic inside the PCIe1_PHY_RX**)? Or
something like **Figure 26-19. PCIe PHY Subsystem Integration of DRA TRM vE
shows how 32KHz clock is being used** ?

Thanks
Kishon

> 
> -Tero
> 
>>
>> Cc: Tony Lindgren <tony@atomide.com>
>> Cc: Rajendra Nayak <rnayak@ti.com>
>> Cc: Tero Kristo <t-kristo@ti.com>
>> Cc: Paul Walmsley <paul@pwsan.com>
>> Cc: Tony Lindgren <tony@atomide.com>
>> Cc: Rob Herring <robh+dt@kernel.org>
>> Cc: Pawel Moll <pawel.moll@arm.com>
>> Cc: Mark Rutland <mark.rutland@arm.com>
>> Cc: Kumar Gala <galak@codeaurora.org>
>> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
>> ---
>>   arch/arm/boot/dts/dra7xx-clocks.dtsi |    8 ++++++++
>>   1 file changed, 8 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/dra7xx-clocks.dtsi
>> b/arch/arm/boot/dts/dra7xx-clocks.dtsi
>> index 44993ec..e1bd052 100644
>> --- a/arch/arm/boot/dts/dra7xx-clocks.dtsi
>> +++ b/arch/arm/boot/dts/dra7xx-clocks.dtsi
>> @@ -1165,6 +1165,14 @@
>>           reg = <0x021c>, <0x0220>;
>>       };
>>
>> +    optfclk_pciephy_32khz: optfclk_pciephy_32khz@4a0093b0 {
>> +        compatible = "ti,gate-clock";
>> +        clocks = <&sys_32k_ck>;
>> +        #clock-cells = <0>;
>> +        reg = <0x13b0>;
>> +        ti,bit-shift = <8>;
>> +    };
>> +
>>       optfclk_pciephy_div: optfclk_pciephy_div@4a00821c {
>>           compatible = "ti,divider-clock";
>>           clocks = <&apll_pcie_ck>;
>>
> 
--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Tero Kristo June 19, 2014, 1:26 p.m. UTC | #3
On 06/19/2014 04:23 PM, Kishon Vijay Abraham I wrote:
> Hi Tero,
>
> On Thursday 19 June 2014 04:46 PM, Tero Kristo wrote:
>> On 05/29/2014 09:38 AM, Kishon Vijay Abraham I wrote:
>>> Added missing 32khz clock used by PCIe PHY.
>>> The documention for this node can be found @ ../bindings/clock/ti/gate.txt.
>>
>> You can drop the node documentation ref, and rather add a TRM reference about
>> hardware details. Other than that, looks good to me.
>
> You mean something like why 32KHz clock is used (**PRCM.PCIE_32K_GFCLK (based
> on PRM.SYS_32K) for debounce and wakeup logic inside the PCIe1_PHY_RX**)? Or
> something like **Figure 26-19. PCIe PHY Subsystem Integration of DRA TRM vE
> shows how 32KHz clock is being used** ?

Just having a reference to the TRM version used and if you can provide a 
link to a figure or page where the clock integration is described should 
be good.

-Tero

>
> Thanks
> Kishon
>
>>
>> -Tero
>>
>>>
>>> Cc: Tony Lindgren <tony@atomide.com>
>>> Cc: Rajendra Nayak <rnayak@ti.com>
>>> Cc: Tero Kristo <t-kristo@ti.com>
>>> Cc: Paul Walmsley <paul@pwsan.com>
>>> Cc: Tony Lindgren <tony@atomide.com>
>>> Cc: Rob Herring <robh+dt@kernel.org>
>>> Cc: Pawel Moll <pawel.moll@arm.com>
>>> Cc: Mark Rutland <mark.rutland@arm.com>
>>> Cc: Kumar Gala <galak@codeaurora.org>
>>> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
>>> ---
>>>    arch/arm/boot/dts/dra7xx-clocks.dtsi |    8 ++++++++
>>>    1 file changed, 8 insertions(+)
>>>
>>> diff --git a/arch/arm/boot/dts/dra7xx-clocks.dtsi
>>> b/arch/arm/boot/dts/dra7xx-clocks.dtsi
>>> index 44993ec..e1bd052 100644
>>> --- a/arch/arm/boot/dts/dra7xx-clocks.dtsi
>>> +++ b/arch/arm/boot/dts/dra7xx-clocks.dtsi
>>> @@ -1165,6 +1165,14 @@
>>>            reg = <0x021c>, <0x0220>;
>>>        };
>>>
>>> +    optfclk_pciephy_32khz: optfclk_pciephy_32khz@4a0093b0 {
>>> +        compatible = "ti,gate-clock";
>>> +        clocks = <&sys_32k_ck>;
>>> +        #clock-cells = <0>;
>>> +        reg = <0x13b0>;
>>> +        ti,bit-shift = <8>;
>>> +    };
>>> +
>>>        optfclk_pciephy_div: optfclk_pciephy_div@4a00821c {
>>>            compatible = "ti,divider-clock";
>>>            clocks = <&apll_pcie_ck>;
>>>
>>

--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Patch
diff mbox

diff --git a/arch/arm/boot/dts/dra7xx-clocks.dtsi b/arch/arm/boot/dts/dra7xx-clocks.dtsi
index 44993ec..e1bd052 100644
--- a/arch/arm/boot/dts/dra7xx-clocks.dtsi
+++ b/arch/arm/boot/dts/dra7xx-clocks.dtsi
@@ -1165,6 +1165,14 @@ 
 		reg = <0x021c>, <0x0220>;
 	};
 
+	optfclk_pciephy_32khz: optfclk_pciephy_32khz@4a0093b0 {
+		compatible = "ti,gate-clock";
+		clocks = <&sys_32k_ck>;
+		#clock-cells = <0>;
+		reg = <0x13b0>;
+		ti,bit-shift = <8>;
+	};
+
 	optfclk_pciephy_div: optfclk_pciephy_div@4a00821c {
 		compatible = "ti,divider-clock";
 		clocks = <&apll_pcie_ck>;