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Message-ID: <9cd14c69-9c30-a68c-dfd1-396613b5185a@micronovasrl.com>
Date: Thu, 1 Apr 2021 20:37:13 +0200
From: Giulio Benetti <giulio.benetti@...ronovasrl.com>
To: Rob Herring <robh@...nel.org>,
Giulio Benetti <giulio.benetti@...ettiengineering.com>
Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>,
linux-input@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] dt-bindings: touchscreen: Add HY46XX bindings
Hello Rob, All,
Il 06/03/2021 20:41, Rob Herring ha scritto:
> On Fri, Mar 05, 2021 at 05:38:33PM +0100, Giulio Benetti wrote:
>> From: Giulio Benetti <giulio.benetti@...ronovasrl.com>
>>
>> This adds device tree bindings for the Hycon HY46XX touchscreen series.
>>
>> Signed-off-by: Giulio Benetti <giulio.benetti@...ronovasrl.com>
>> ---
>> .../input/touchscreen/hycon,hy46xx.yaml | 130 ++++++++++++++++++
>> MAINTAINERS | 6 +
>> 2 files changed, 136 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/input/touchscreen/hycon,hy46xx.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/input/touchscreen/hycon,hy46xx.yaml b/Documentation/devicetree/bindings/input/touchscreen/hycon,hy46xx.yaml
>> new file mode 100644
>> index 000000000000..cddd5e5bae92
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/input/touchscreen/hycon,hy46xx.yaml
>> @@ -0,0 +1,130 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/input/touchscreen/hycon-hy46xx.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: hyconon HY46XX series touchscreen controller Bindings
>> +
>> +description: |
>> + There are 6 variants of the chip for various touch panel sizes and coverl len material
>> + Glass: 0.3mm--4.0mm
>> + PET/PMMA: 0.2mm--2.0mm
>> + HY4613(B)-N048 < 6"
>> + HY4614(B)-N068 7" .. 10.1"
>> + HY4621-NS32 < 5"
>> + HY4623-NS48 5.1" .. 7"
>> + Glass: 0.3mm--8.0mm
>> + PET/PMMA: 0.2mm--4.0mm
>> + HY4633(B)-N048 < 6"
>> + HY4635(B)-N048 < 7" .. 10.1"
>> +
>> +maintainers:
>> + - Giulio Benetti <giulio.benetti@...ronovasrl.com>
>> +
>> +allOf:
>> + - $ref: touchscreen.yaml#
>> +
>> +properties:
>> + compatible:
>> + enum:
>> + - hycon,hycon-hy4613
>> + - hycon,hycon-hy4614
>> + - hycon,hycon-hy4621
>> + - hycon,hycon-hy4623
>> + - hycon,hycon-hy4633
>> + - hycon,hycon-hy4635
>> +
>> + reg:
>> + maxItems: 1
>> +
>> + interrupts:
>> + maxItems: 1
>> +
>> + reset-gpios:
>> + maxItems: 1
>> +
>> + vcc-supply: true
>> +
>> + threshold:
>
> Needs a vendor prefix here and all the custom properties.
Sorry but I can't understand this ^^^, I've checked a lot of other yaml
files but couldn't find something related to this. Can you help me by
pointing me an example?
>
> One of the touchscreen properties doesn't already address this?
>
>> + description: Allows setting the sensitivity in the range from 0 to 255.
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + minimum: 0
>> + maximum: 255
>> +
>> + proximity-sensor-switch:
>
> Why a switch rather than enable or disable?
I've changed its name into enable.
>
>> + description: Allows enabling or disabling the Proximity Sensor.
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + minimum: 0
>> + maximum: 1
>
> Is this a hardware config or something a user would want to change at
> runtime? The latter shouldn't be in DT.
It's a hardware config that enable the 11th touch point, but I didn't
handle it inside the driver, so it's better that I remove it for the
moment.
> What does not present mean? Unless there is a need for keeping the
> default setting, then this could be boolean instead.
I've changed all "enable" to boolean and rely on default of the
controller.
Does this sound ok for you so I can send a v2 patchset?
Thank you
Best regards
--
Giulio Benetti
CTO
MICRONOVA SRL
Sede: Via A. Niedda 3 - 35010 Vigonza (PD)
Tel. 049/8931563 - Fax 049/8931346
Cod.Fiscale - P.IVA 02663420285
Capitale Sociale € 26.000 i.v.
Iscritta al Reg. Imprese di Padova N. 02663420285
Numero R.E.A. 258642
> Same questions for the rest of the properties.
>> +
>> + glove-enable:
>> + description: Allows enabling or disabling glove setting.
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + minimum: 0
>> + maximum: 1
>> +
>> + report-speed:
>> + description: Allows setting the report speed(i.e 0x64 => 100Hz).
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + minimum: 0
>> + maximum: 255
>> +
>> + power-noise-enable:
>> + description: Allows enabling or disabling power noise filter.
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + minimum: 0
>> + maximum: 1
>> +
>> + filter-data:
>> + description: Allows setting the filtering data before reporting touch
>> + in the range from 0 to 5.
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + minimum: 0
>> + maximum: 5
>> +
>> + gain:
>> + description: Allows setting the sensitivity distance in the range from 0 to 5.
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + minimum: 0
>> + maximum: 5
>> +
>> + edge-offset:
>> + description: Allows setting the edge compensation in the range from 0 to 16.
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + minimum: 0
>> + maximum: 16
>> +
>> + touchscreen-size-x: true
>> + touchscreen-size-y: true
>> + touchscreen-fuzz-x: true
>> + touchscreen-fuzz-y: true
>> + touchscreen-inverted-x: true
>> + touchscreen-inverted-y: true
>> + touchscreen-swapped-x-y: true
>> + interrupt-controller: true
>> +
>> +additionalProperties: false
>> +
>> +required:
>> + - compatible
>> + - reg
>> + - interrupts
>> +
>> +examples:
>> + - |
>> + #include <dt-bindings/gpio/gpio.h>
>> + #include <dt-bindings/interrupt-controller/arm-gic.h>
>> + i2c {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> + hycon-hy4633@1c {
>> + compatible = "hycon,hy4633";
>> + reg = <0x1c>;
>> + interrupt-parent = <&gpio2>;
>> + interrupts = <5 IRQ_TYPE_EDGE_FALLING>;
>> + reset-gpios = <&gpio2 6 GPIO_ACTIVE_LOW>;
>> + };
>> + };
>> +
>> +...
>> diff --git a/MAINTAINERS b/MAINTAINERS
>> index d92f85ca831d..3f83daf6b2bf 100644
>> --- a/MAINTAINERS
>> +++ b/MAINTAINERS
>> @@ -8245,6 +8245,12 @@ S: Maintained
>> F: mm/hwpoison-inject.c
>> F: mm/memory-failure.c
>>
>> +HYCON HY46XX TOUCHSCREEN SUPPORT
>> +M: Giulio Benetti <giulio.benetti@...ronovasrl.com>
>> +L: linux-input@...r.kernel.org
>> +S: Maintained
>> +F: Documentation/devicetree/bindings/input/touchscreen/hycon,hy46xx.yaml
>> +
>> HYGON PROCESSOR SUPPORT
>> M: Pu Wen <puwen@...on.cn>
>> L: linux-kernel@...r.kernel.org
>> --
>> 2.25.1
>>
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