Re: [PATCH v2 1/3] dt/binding: ti-tsc-adc: deprecate ti,charge-delay and add binding doc for ti,charge-delay-ns

On Thu, Nov 10, 2016 at 10:05:13PM +0530, Mugunthan V N wrote:

ti,charge-delay represents the duration that ADC should wait
before sampling the ADC line to detect the touch location and pen
up/downs. Currently the ADC clock is set at 3MHz. The device-tree
entry for ti,charge-delay is based on assumption of ADC clock at
3MHz, but it can be operated up to 24MHz clock. Representing the
charge delay of touchscreen in terms of ADC clocks is incorrect.
So change this representation to ti,charge-delay-ns, which driver
can convert it to number clock cycles based on ref clock
frequency.

Signed-off-by: Mugunthan V N <redacted>
---
 .../bindings/input/touchscreen/ti-tsc-adc.txt      | 32 ++++++++++++++--------
 1 file changed, 21 insertions(+), 11 deletions(-)

Acked-by: Rob Herring <robh@kernel.org>