diff mbox

[v2,3/4] ARM: berlin: add an ADC node for the BG2Q

Message ID 1428066409-30392-4-git-send-email-antoine.tenart@free-electrons.com (mailing list archive)
State New, archived
Headers show

Commit Message

Antoine Tenart April 3, 2015, 1:06 p.m. UTC
This patch adds the ADC node for the Berlin BG2Q, using the newly added
Berlin IIO ADC driver.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
---
 arch/arm/boot/dts/berlin2q.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

Comments

Sebastian Hesselbarth April 4, 2015, 10:25 a.m. UTC | #1
On 03.04.2015 15:06, Antoine Tenart wrote:
> This patch adds the ADC node for the Berlin BG2Q, using the newly added
> Berlin IIO ADC driver.
>
> Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
> ---
>   arch/arm/boot/dts/berlin2q.dtsi | 8 ++++++++
>   1 file changed, 8 insertions(+)
>
> diff --git a/arch/arm/boot/dts/berlin2q.dtsi b/arch/arm/boot/dts/berlin2q.dtsi
> index 187d056f7ad2..72b1c969a99d 100644
> --- a/arch/arm/boot/dts/berlin2q.dtsi
> +++ b/arch/arm/boot/dts/berlin2q.dtsi
> @@ -565,6 +565,14 @@
>   						function = "twsi3";
>   					};
>   				};
> +
> +				adc: adc {
> +					compatible = "marvell,berlin2-adc";
> +					interrupt-parent = <&sic>;
> +					interrupts = <12>, <14>;
> +					interrupt-names = "adc", "tsen";
> +					status = "disabled";
> +				};

Antoine,

nit: there is no gated clock for the ADC, I guess we can just always
enable it. That will save you the last patch of the series.

BTW, I have the strong feeling that moving berlin's clk drivers to
regmap will block any subsequent patches you are preparing. How about
we target the next merge window for moving the clk node but not the
drivers (except of_iomap of the _parent's_ reg property) and push the
less controversal patches (pinctrl, reset) with regmap/syscon forward?

Sebastian

>   			};
>
>   			sic: interrupt-controller@e000 {
>
Antoine Tenart April 7, 2015, 10:20 a.m. UTC | #2
Sebastian,

On Sat, Apr 04, 2015 at 12:25:56PM +0200, Sebastian Hesselbarth wrote:
> On 03.04.2015 15:06, Antoine Tenart wrote:
> >This patch adds the ADC node for the Berlin BG2Q, using the newly added
> >Berlin IIO ADC driver.
> >
> >Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
> >---
> >  arch/arm/boot/dts/berlin2q.dtsi | 8 ++++++++
> >  1 file changed, 8 insertions(+)
> >
> >diff --git a/arch/arm/boot/dts/berlin2q.dtsi b/arch/arm/boot/dts/berlin2q.dtsi
> >index 187d056f7ad2..72b1c969a99d 100644
> >--- a/arch/arm/boot/dts/berlin2q.dtsi
> >+++ b/arch/arm/boot/dts/berlin2q.dtsi
> >@@ -565,6 +565,14 @@
> >  						function = "twsi3";
> >  					};
> >  				};
> >+
> >+				adc: adc {
> >+					compatible = "marvell,berlin2-adc";
> >+					interrupt-parent = <&sic>;
> >+					interrupts = <12>, <14>;
> >+					interrupt-names = "adc", "tsen";
> >+					status = "disabled";
> >+				};
> 
> nit: there is no gated clock for the ADC, I guess we can just always
> enable it. That will save you the last patch of the series.

Sure, we can just drop the last patch (and the status property).

> BTW, I have the strong feeling that moving berlin's clk drivers to
> regmap will block any subsequent patches you are preparing. How about
> we target the next merge window for moving the clk node but not the
> drivers (except of_iomap of the _parent's_ reg property) and push the
> less controversal patches (pinctrl, reset) with regmap/syscon forward?

The entire clock rework series does not affect this ADC series or any
other on going series. It can be merged latter, without breaking
anything. I just realized I mentioned the clock rework series as a
dependency in the cover letter of this series but it is not, my bad.

So, we can target the next merge window for all series but the clock
rework. In addition to this, I can send a series moving the clock node,
with minor modifications to the driver so we have a proper dt. And then
we can see if moving to a regmap aware clock driver can be done.

To sum up:
- chip/system controller series can be pushed
- this ADC series too, as it does not depend on the clock rework (as
  soon as we have the needed acked-by)
- I need to make a new series to move the clock node
- the clock driver rework series can live in parallel

Agreed?

Antoine
Sebastian Hesselbarth April 7, 2015, 10:25 a.m. UTC | #3
On 07.04.2015 12:20, Antoine Tenart wrote:
> On Sat, Apr 04, 2015 at 12:25:56PM +0200, Sebastian Hesselbarth wrote:
>> On 03.04.2015 15:06, Antoine Tenart wrote:
>>> This patch adds the ADC node for the Berlin BG2Q, using the newly added
>>> Berlin IIO ADC driver.
>>>
>>> Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
>>> ---
>>>   arch/arm/boot/dts/berlin2q.dtsi | 8 ++++++++
>>>   1 file changed, 8 insertions(+)
>>>
>>> diff --git a/arch/arm/boot/dts/berlin2q.dtsi b/arch/arm/boot/dts/berlin2q.dtsi
>>> index 187d056f7ad2..72b1c969a99d 100644
>>> --- a/arch/arm/boot/dts/berlin2q.dtsi
>>> +++ b/arch/arm/boot/dts/berlin2q.dtsi
>>> @@ -565,6 +565,14 @@
>>>   						function = "twsi3";
>>>   					};
>>>   				};
>>> +
>>> +				adc: adc {
>>> +					compatible = "marvell,berlin2-adc";
>>> +					interrupt-parent = <&sic>;
>>> +					interrupts = <12>, <14>;
>>> +					interrupt-names = "adc", "tsen";
>>> +					status = "disabled";
>>> +				};
>>
>> nit: there is no gated clock for the ADC, I guess we can just always
>> enable it. That will save you the last patch of the series.
>
> Sure, we can just drop the last patch (and the status property).

Ok.

>> BTW, I have the strong feeling that moving berlin's clk drivers to
>> regmap will block any subsequent patches you are preparing. How about
>> we target the next merge window for moving the clk node but not the
>> drivers (except of_iomap of the _parent's_ reg property) and push the
>> less controversal patches (pinctrl, reset) with regmap/syscon forward?
>
> The entire clock rework series does not affect this ADC series or any
> other on going series. It can be merged latter, without breaking
> anything. I just realized I mentioned the clock rework series as a
> dependency in the cover letter of this series but it is not, my bad.
>
> So, we can target the next merge window for all series but the clock
> rework. In addition to this, I can send a series moving the clock node,
> with minor modifications to the driver so we have a proper dt. And then
> we can see if moving to a regmap aware clock driver can be done.
>
> To sum up:
> - chip/system controller series can be pushed

Ok, I'll pick it up once 4.0 drops.

> - this ADC series too, as it does not depend on the clock rework (as
>    soon as we have the needed acked-by)

Ok, once the ACKs are there, I'll pick it up too.

> - I need to make a new series to move the clock node

Great.

> - the clock driver rework series can live in parallel

Good.

> Agreed?

Definitely :)

Sebastian
diff mbox

Patch

diff --git a/arch/arm/boot/dts/berlin2q.dtsi b/arch/arm/boot/dts/berlin2q.dtsi
index 187d056f7ad2..72b1c969a99d 100644
--- a/arch/arm/boot/dts/berlin2q.dtsi
+++ b/arch/arm/boot/dts/berlin2q.dtsi
@@ -565,6 +565,14 @@ 
 						function = "twsi3";
 					};
 				};
+
+				adc: adc {
+					compatible = "marvell,berlin2-adc";
+					interrupt-parent = <&sic>;
+					interrupts = <12>, <14>;
+					interrupt-names = "adc", "tsen";
+					status = "disabled";
+				};
 			};
 
 			sic: interrupt-controller@e000 {