On Wed, 5 Jul 2017 10:35:10 +0800 Dong Aisheng <aisheng.d...@nxp.com> wrote:
> The Timer/PWM Module (TPM) supports input capture, output compare, > and the generation of PWM signals to control electric motor and power > management applications. The counter, compare and capture registers > are clocked by an asynchronous clock that can remain enabled in low > power modes. TPM can support global counter bus where one TPM drives > the counter bus for the others, provided bit width is the same. > > This patch only adds the timer support. PWM would be added later. Hi Dong, Not relevant to this patch - just an observation! Just came across this thread and took a look at the hardware. I see some of the timers (particularly the flextimers) support quadrature encoder modes. Just thought I'd point you at some on going discussions on the IIO list (linux-...@vger.kernel.org) trying to improve the interface for such devices. Might be of interest (or not depending on whether support for that functionality is of interest!) http://marc.info/?l=linux-iio&m=149904379731556&w=2 Jonathan > > ChangeLog: > v3->v4: > * also add ETIME explanation in function > v2->v3: > * address a few minor comments from Daniel Lezcano > * add more explaination on ETIME check in commit message > v1->v2: > * change to readl/writel from __raw_readl/writel according to Arnd's > suggestion to avoid endian issue > * add help information in Kconfig > * add more error checking > > Dong Aisheng (2): > dt-bindings: timer: add nxp tpm timer binding doc > timer: imx-tpm: add imx tpm timer support > > .../devicetree/bindings/timer/nxp,tpm-timer.txt | 28 +++ > drivers/clocksource/Kconfig | 8 + > drivers/clocksource/Makefile | 1 + > drivers/clocksource/timer-imx-tpm.c | 239 > +++++++++++++++++++++ 4 files changed, 276 insertions(+) > create mode 100644 > Documentation/devicetree/bindings/timer/nxp,tpm-timer.txt create mode > 100644 drivers/clocksource/timer-imx-tpm.c >
