Messages in this thread | | | Subject | Re: [PATCH v10 43/55] dt-bindings: input: atmel: support to set max bytes transferred | From | Dmitry Osipenko <> | Date | Wed, 1 Apr 2020 17:38:57 +0300 |
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31.03.2020 13:50, Jiada Wang пишет: > Add support to set max bytes transferred in an i2c transaction > > Signed-off-by: Jiada Wang <jiada_wang@mentor.com> > --- > Documentation/devicetree/bindings/input/atmel,maxtouch.txt | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/Documentation/devicetree/bindings/input/atmel,maxtouch.txt b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt > index 126266891cdc..37a798cab0dd 100644 > --- a/Documentation/devicetree/bindings/input/atmel,maxtouch.txt > +++ b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt > @@ -45,6 +45,8 @@ Optional properties for main touchpad device: > > - atmel,input_name: Override name of input device from the default. > > +- atmel,mtu: Maximum number of bytes that can read/transferred in an i2c transaction > + > Example: > > touch@4b { > @@ -52,4 +54,5 @@ Example: > reg = <0x4b>; > interrupt-parent = <&gpio>; > interrupts = <TEGRA_GPIO(W, 3) IRQ_TYPE_LEVEL_LOW>; > + atmel,mtu = <200> > }; >
Is this a software (firmware) limitation which varies from version to version?
If the limitation is per-hardware version, then perhaps should be better to have a hardcoded per-hardware table of limits in the driver?
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