| Message ID | 20210825152518.379386-6-miquel.raynal@bootlin.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | TI AM437X ADC1 | expand |
On Wed, 25 Aug 2021 17:24:43 +0200 Miquel Raynal <miquel.raynal@bootlin.com> wrote: > Now that the three hardware peaces described in this file have been > translated in yaml in 3 dedicated files (MFD, touchscreen controller and > ADC) it is time to remove this text file. > > Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Nice to have another one of these go away :) > --- > .../bindings/input/touchscreen/ti-tsc-adc.txt | 91 ------------------- > 1 file changed, 91 deletions(-) > delete mode 100644 Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt > > diff --git a/Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt b/Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt > deleted file mode 100644 > index aad5e34965eb..000000000000 > --- a/Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt > +++ /dev/null > @@ -1,91 +0,0 @@ > -* TI - TSC ADC (Touschscreen and analog digital converter) > -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > - > -Required properties: > -- mfd > - compatible: Should be > - "ti,am3359-tscadc" for AM335x/AM437x SoCs > - "ti,am654-tscadc", "ti,am3359-tscadc" for AM654 SoCs > -- child "tsc" > - compatible: Should be "ti,am3359-tsc". > - ti,wires: Wires refer to application modes i.e. 4/5/8 wire touchscreen > - support on the platform. > - ti,x-plate-resistance: X plate resistance > - ti,coordinate-readouts: The sequencer supports a total of 16 > - programmable steps each step is used to > - read a single coordinate. A single > - readout is enough but multiple reads can > - increase the quality. > - A value of 5 means, 5 reads for X, 5 for > - Y and 2 for Z (always). This utilises 12 > - of the 16 software steps available. The > - remaining 4 can be used by the ADC. > - ti,wire-config: Different boards could have a different order for > - connecting wires on touchscreen. We need to provide an > - 8 bit number where in the 1st four bits represent the > - analog lines and the next 4 bits represent positive/ > - negative terminal on that input line. Notations to > - represent the input lines and terminals resoectively > - is as follows: > - AIN0 = 0, AIN1 = 1 and so on till AIN7 = 7. > - XP = 0, XN = 1, YP = 2, YN = 3. > -- child "adc" > - compatible: Should be > - "ti,am3359-adc" for AM335x/AM437x SoCs > - "ti,am654-adc", "ti,am3359-adc" for AM654 SoCs > - ti,adc-channels: List of analog inputs available for ADC. > - AIN0 = 0, AIN1 = 1 and so on till AIN7 = 7. > - > -Optional properties: > -- child "tsc" > - ti,charge-delay: Length of touch screen charge delay step in terms of > - ADC clock cycles. Charge delay value should be large > - in order to avoid false pen-up events. This value > - effects the overall sampling speed, hence need to be > - kept as low as possible, while avoiding false pen-up > - event. Start from a lower value, say 0x400, and > - increase value until false pen-up events are avoided. > - The pen-up detection happens immediately after the > - charge step, so this does in fact function as a > - hardware knob for adjusting the amount of "settling > - time". > - > -- child "adc" > - ti,chan-step-opendelay: List of open delays for each channel of > - ADC in the order of ti,adc-channels. The > - value corresponds to the number of ADC > - clock cycles to wait after applying the > - step configuration registers and before > - sending the start of ADC conversion. > - Maximum value is 0x3FFFF. > - ti,chan-step-sampledelay: List of sample delays for each channel > - of ADC in the order of ti,adc-channels. > - The value corresponds to the number of > - ADC clock cycles to sample (to hold > - start of conversion high). > - Maximum value is 0xFF. > - ti,chan-step-avg: Number of averages to be performed for each > - channel of ADC. If average is 16 then input > - is sampled 16 times and averaged to get more > - accurate value. This increases the time taken > - by ADC to generate a sample. Valid range is 0 > - average to 16 averages. Maximum value is 16. > - > -Example: > - tscadc: tscadc@44e0d000 { > - compatible = "ti,am3359-tscadc"; > - tsc { > - ti,wires = <4>; > - ti,x-plate-resistance = <200>; > - ti,coordiante-readouts = <5>; > - ti,wire-config = <0x00 0x11 0x22 0x33>; > - ti,charge-delay = <0x400>; > - }; > - > - adc { > - ti,adc-channels = <4 5 6 7>; > - ti,chan-step-opendelay = <0x098 0x3ffff 0x098 0x0>; > - ti,chan-step-sampledelay = <0xff 0x0 0xf 0x0>; > - ti,chan-step-avg = <16 2 4 8>; > - }; > - }
On Wed, 25 Aug 2021 17:24:43 +0200, Miquel Raynal wrote: > Now that the three hardware peaces described in this file have been > translated in yaml in 3 dedicated files (MFD, touchscreen controller and > ADC) it is time to remove this text file. > > Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> > --- > .../bindings/input/touchscreen/ti-tsc-adc.txt | 91 ------------------- > 1 file changed, 91 deletions(-) > delete mode 100644 Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt > Acked-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt b/Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt deleted file mode 100644 index aad5e34965eb..000000000000 --- a/Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt +++ /dev/null @@ -1,91 +0,0 @@ -* TI - TSC ADC (Touschscreen and analog digital converter) -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - -Required properties: -- mfd - compatible: Should be - "ti,am3359-tscadc" for AM335x/AM437x SoCs - "ti,am654-tscadc", "ti,am3359-tscadc" for AM654 SoCs -- child "tsc" - compatible: Should be "ti,am3359-tsc". - ti,wires: Wires refer to application modes i.e. 4/5/8 wire touchscreen - support on the platform. - ti,x-plate-resistance: X plate resistance - ti,coordinate-readouts: The sequencer supports a total of 16 - programmable steps each step is used to - read a single coordinate. A single - readout is enough but multiple reads can - increase the quality. - A value of 5 means, 5 reads for X, 5 for - Y and 2 for Z (always). This utilises 12 - of the 16 software steps available. The - remaining 4 can be used by the ADC. - ti,wire-config: Different boards could have a different order for - connecting wires on touchscreen. We need to provide an - 8 bit number where in the 1st four bits represent the - analog lines and the next 4 bits represent positive/ - negative terminal on that input line. Notations to - represent the input lines and terminals resoectively - is as follows: - AIN0 = 0, AIN1 = 1 and so on till AIN7 = 7. - XP = 0, XN = 1, YP = 2, YN = 3. -- child "adc" - compatible: Should be - "ti,am3359-adc" for AM335x/AM437x SoCs - "ti,am654-adc", "ti,am3359-adc" for AM654 SoCs - ti,adc-channels: List of analog inputs available for ADC. - AIN0 = 0, AIN1 = 1 and so on till AIN7 = 7. - -Optional properties: -- child "tsc" - ti,charge-delay: Length of touch screen charge delay step in terms of - ADC clock cycles. Charge delay value should be large - in order to avoid false pen-up events. This value - effects the overall sampling speed, hence need to be - kept as low as possible, while avoiding false pen-up - event. Start from a lower value, say 0x400, and - increase value until false pen-up events are avoided. - The pen-up detection happens immediately after the - charge step, so this does in fact function as a - hardware knob for adjusting the amount of "settling - time". - -- child "adc" - ti,chan-step-opendelay: List of open delays for each channel of - ADC in the order of ti,adc-channels. The - value corresponds to the number of ADC - clock cycles to wait after applying the - step configuration registers and before - sending the start of ADC conversion. - Maximum value is 0x3FFFF. - ti,chan-step-sampledelay: List of sample delays for each channel - of ADC in the order of ti,adc-channels. - The value corresponds to the number of - ADC clock cycles to sample (to hold - start of conversion high). - Maximum value is 0xFF. - ti,chan-step-avg: Number of averages to be performed for each - channel of ADC. If average is 16 then input - is sampled 16 times and averaged to get more - accurate value. This increases the time taken - by ADC to generate a sample. Valid range is 0 - average to 16 averages. Maximum value is 16. - -Example: - tscadc: tscadc@44e0d000 { - compatible = "ti,am3359-tscadc"; - tsc { - ti,wires = <4>; - ti,x-plate-resistance = <200>; - ti,coordiante-readouts = <5>; - ti,wire-config = <0x00 0x11 0x22 0x33>; - ti,charge-delay = <0x400>; - }; - - adc { - ti,adc-channels = <4 5 6 7>; - ti,chan-step-opendelay = <0x098 0x3ffff 0x098 0x0>; - ti,chan-step-sampledelay = <0xff 0x0 0xf 0x0>; - ti,chan-step-avg = <16 2 4 8>; - }; - }
Now that the three hardware peaces described in this file have been translated in yaml in 3 dedicated files (MFD, touchscreen controller and ADC) it is time to remove this text file. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> --- .../bindings/input/touchscreen/ti-tsc-adc.txt | 91 ------------------- 1 file changed, 91 deletions(-) delete mode 100644 Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt