From: "Tanwar, Rahul" <rahul.tanwar@linux.intel.com>
To: Rob Herring <robh@kernel.org>
Cc: u.kleine-koenig@pengutronix.de, linux-pwm@vger.kernel.org,
thierry.reding@gmail.com, p.zabel@pengutronix.de,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
andriy.shevchenko@intel.com, songjun.Wu@intel.com,
cheol.yong.kim@intel.com, qi-ming.wu@intel.com,
rahul.tanwar.linux@gmail.com
Subject: Re: [PATCH v4 1/2] Add DT bindings YAML schema for PWM fan controller of LGM SoC
Date: Tue, 14 Jul 2020 13:32:58 +0800 [thread overview]
Message-ID: <b5832bbd-087e-4182-bea9-ed7b69626a8c@linux.intel.com> (raw)
In-Reply-To: <20200713164600.GA359372@bogus>
Hi Rob,
On 14/7/2020 12:46 am, Rob Herring wrote:
> On Tue, Jun 30, 2020 at 03:55:31PM +0800, Rahul Tanwar wrote:
>> Intel's LGM(Lightning Mountain) SoC contains a PWM fan controller
>> which is only used to control the fan attached to the system. This
>> PWM controller does not have any other consumer other than fan.
>> Add DT bindings documentation for this PWM fan controller.
>>
>> Signed-off-by: Rahul Tanwar <rahul.tanwar@linux.intel.com>
>> ---
>> .../devicetree/bindings/pwm/intel,lgm-pwm.yaml | 50 ++++++++++++++++++++++
>> 1 file changed, 50 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/pwm/intel,lgm-pwm.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/pwm/intel,lgm-pwm.yaml b/Documentation/devicetree/bindings/pwm/intel,lgm-pwm.yaml
>> new file mode 100644
>> index 000000000000..120bf3d85a24
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/pwm/intel,lgm-pwm.yaml
>> @@ -0,0 +1,50 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/pwm/intel,lgm-pwm.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: LGM SoC PWM fan controller
>> +
>> +maintainers:
>> + - Rahul Tanwar <rahul.tanwar@intel.com>
>> +
>> +properties:
>> + compatible:
>> + const: intel,lgm-pwm
>> +
>> + reg:
>> + maxItems: 1
>> +
>> + clocks:
>> + maxItems: 1
>> +
>> + resets:
>> + maxItems: 1
>> +
>> + intel,fan-wire:
>> + $ref: '/schemas/types.yaml#/definitions/uint32'
>> + description: Specifies fan mode. Default when unspecified is 2.
>> +
>> + intel,max-rpm:
>> + $ref: '/schemas/types.yaml#/definitions/uint32'
>> + description:
>> + Specifies maximum RPM of fan attached to the system.
>> + Default when unspecified is 4000.
> These are properties of the fan, not the PWM. And probably if you
> need these properties then others would too, so they should be
> common. Look at the pwm-fan.txt binding.
I checked pwm-fan.txt. I don't find any common property which matches
our fan properties of fan wire mode & max-rpm. Are you suggesting to
add these properties additionally in pwm-fan.txt as new common properties
and then use newly added generic name in our driver?
Also, we have a dedicated PWM fan controller. So do you think this driver
belongs to drivers/hwmon instead of drivers/pwm? Thanks.
Regards,
Rahul
next prev parent reply other threads:[~2020-07-14 5:33 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-30 7:55 [PATCH v4 0/2] pwm: intel: Add PWM driver for a new SoC Rahul Tanwar
2020-06-30 7:55 ` [PATCH v4 1/2] Add DT bindings YAML schema for PWM fan controller of LGM SoC Rahul Tanwar
2020-07-13 16:46 ` Rob Herring
2020-07-14 5:32 ` Tanwar, Rahul [this message]
2020-06-30 7:55 ` [PATCH v4 2/2] Add PWM fan controller driver for " Rahul Tanwar
2020-07-13 19:10 ` Uwe Kleine-König
2020-07-14 5:35 ` Tanwar, Rahul
2020-07-14 7:18 ` Uwe Kleine-König
[not found] ` <20200713191059.zsokzvv3k2hyaxcl-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2020-07-23 4:16 ` Tanwar, Rahul
2020-07-23 6:34 ` Uwe Kleine-König
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