Messages in this thread | | | Subject | Re: [PATCH v3 0/3] implement I2C retries for mXT1368 | From | "Wang, Jiada" <> | Date | Wed, 21 Oct 2020 10:14:29 +0900 |
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Hello Dmitry and all
Kind reminder on this patch-set
Thanks, Jiada
On 2020/10/01 0:12, Jiada Wang wrote: > According to datasheet, mXT1386 chip has a WAKE line, it is used > to wake the chip up from deep sleep mode before communicating with > it via the I2C-compatible interface. > > if the WAKE line is connected to a GPIO line, the line must be > asserted 25 ms before the host attempts to communicate with the > mXT1386. > If the WAKE line is connected to the SCL pin, the mXT1386 will send > a NACK on the first attempt to address it, the host must then retry > 25 ms later. > > This patch adds compatible string "atmel,mXT1386" for mXT1386 controller, > when I2C transfer on mXT1386 fails, retry the transfer once after a > 25 ms sleep. > > > Jiada Wang (3): > dt-bindings: input: atmel: add compatible for mXT1386 > Input: atmel_mxt_ts - implement I2C retries for mXT1368 > ARM: tegra: add mXT1386 compatible > > --- > v3: > change compatible string to lowercase > > v2: > add bool retry_i2c_transfers to struct mxt_data, > to indicate whether retry is needed when i2c transfer fails > > v1: initial version > --- > .../bindings/input/atmel,maxtouch.txt | 1 + > .../boot/dts/tegra20-acer-a500-picasso.dts | 2 +- > drivers/input/touchscreen/atmel_mxt_ts.c | 62 +++++++++++++++---- > 3 files changed, 52 insertions(+), 13 deletions(-) >
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