| Message ID | 20230605060524.1178164-2-yangcong5@huaqin.corp-partner.google.com |
|---|---|
| State | New |
| Headers | show |
| Series | [v2,1/2] dt-bindings: input: touchscreen: Add ilitek 9882T touchscreen chip | expand |
Hi,Dmitry On Wed, Jun 7, 2023 at 2:51 AM Dmitry Torokhov <dmitry.torokhov@gmail.com> wrote: > > On Mon, Jun 05, 2023 at 12:34:54PM +0200, Krzysztof Kozlowski wrote: > > On 05/06/2023 08:05, Cong Yang wrote: > > > Add an ilitek touch screen chip ili9882t. > > > > > > Signed-off-by: Cong Yang <yangcong5@huaqin.corp-partner.google.com> > > > --- > > > .../bindings/input/elan,ekth6915.yaml | 23 ++++++++++++++++--- > > > 1 file changed, 20 insertions(+), 3 deletions(-) > > > > > > diff --git a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml > > > index 05e6f2df604c..f0e7ffdce605 100644 > > > --- a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml > > > +++ b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml > > > @@ -15,11 +15,14 @@ description: > > > > > > properties: > > > compatible: > > > - items: > > > - - const: elan,ekth6915 > > > + enum: > > > + - elan,ekth6915 > > > + - ilitek,ili9882t > > > > > > reg: > > > - const: 0x10 > > > + enum: > > > + - 0x10 > > > + - 0x41 > > > > > > interrupts: > > > maxItems: 1 > > > @@ -29,11 +32,13 @@ properties: > > > > > > vcc33-supply: > > > description: The 3.3V supply to the touchscreen. > > > + If using ili9882t then this supply will not be needed. > > > > What does it mean "will not be needed"? Describe the hardware, not your > > drivers. > > I do not think it makes sense to merge Ilitek and Elan into a single > binding. The only thing that they have in common is that we are trying > to reuse drivers/hid/i2c-hid/i2c-hid-of-elan.c to handle reset timings > (which is also questionable IMO). > > Maybe if we had a single unified binding for HID-over-I2C touchscreens > then combining would make more sense, at least to me... > Okay, thanks for the suggestion, I will add an ilitek binding. > Thanks. > > -- > Dmitry
On Tue, Jun 06, 2023 at 10:06:05AM +0800, cong yang wrote: > Hi,Conor, > > On Mon, Jun 5, 2023 at 6:20 PM Conor Dooley <conor@kernel.org> wrote: > > > > Hey Cong Yang, > > > > On Mon, Jun 05, 2023 at 02:05:23PM +0800, Cong Yang wrote: > > > Add an ilitek touch screen chip ili9882t. > > > > Could you add a comment here mentioning the relationship between these > > chips? > > Okay, I will add in V3 version. > > > On Mon, Jun 05, 2023 at 02:05:23PM +0800, Cong Yang wrote: > > > > > Signed-off-by: Cong Yang <yangcong5@huaqin.corp-partner.google.com> > > > --- > > > .../bindings/input/elan,ekth6915.yaml | 23 ++++++++++++++++--- > > > 1 file changed, 20 insertions(+), 3 deletions(-) > > > > > > diff --git a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml > > > index 05e6f2df604c..f0e7ffdce605 100644 > > > --- a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml > > > +++ b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml > > > @@ -15,11 +15,14 @@ description: > > > > > > properties: > > > compatible: > > > - items: > > > - - const: elan,ekth6915 > > > + enum: > > > + - elan,ekth6915 > > > + - ilitek,ili9882t > > > > > > reg: > > > - const: 0x10 > > > + enum: > > > + - 0x10 > > > + - 0x41 > > > > Is 0x10 only valid for the elan,ekth6915 & 0x41 for the ilitek one? > > If so, please add some enforcement of the values based on the > > compatible. > > I don't think 0x10 is the only address for ekth6915,(nor is 0x41 the > only address for ili9882t). It depends on the hardware design. I'd just drop the values as we don't typically enforce 'reg' values. Rob
diff --git a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml index 05e6f2df604c..f0e7ffdce605 100644 --- a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml +++ b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml @@ -15,11 +15,14 @@ description: properties: compatible: - items: - - const: elan,ekth6915 + enum: + - elan,ekth6915 + - ilitek,ili9882t reg: - const: 0x10 + enum: + - 0x10 + - 0x41 interrupts: maxItems: 1 @@ -29,11 +32,13 @@ properties: vcc33-supply: description: The 3.3V supply to the touchscreen. + If using ili9882t then this supply will not be needed. vccio-supply: description: The IO supply to the touchscreen. Need not be specified if this is the same as the 3.3V supply. + If using ili9882t, the IO supply is required. required: - compatible @@ -41,6 +46,18 @@ required: - interrupts - vcc33-supply +if: + properties: + compatible: + contains: + const: ilitek,ili9882t +then: + required: + - compatible + - reg + - interrupts + - vccio-supply + additionalProperties: false examples:
Add an ilitek touch screen chip ili9882t. Signed-off-by: Cong Yang <yangcong5@huaqin.corp-partner.google.com> --- .../bindings/input/elan,ekth6915.yaml | 23 ++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-)