Re: [PATCH] i2c: imx: use usleep_range(50,100) instead of udelay(50)

2016-04-26 Thread Wolfram Sang
On Tue, Apr 26, 2016 at 08:27:46AM +0200, Dirk Behme wrote: > From: Oleksij Rempel > > Documentation/timers/timers-howto.txt recommends to use > usleep_range on delays > 10usec. According to my test results > with Neonode zForce touchscreen driver, usleep_range indeed >

Re: [PATCH] i2c: imx: use usleep_range(50,100) instead of udelay(50)

2016-04-26 Thread Wolfram Sang
On Tue, Apr 26, 2016 at 08:27:46AM +0200, Dirk Behme wrote: > From: Oleksij Rempel > > Documentation/timers/timers-howto.txt recommends to use > usleep_range on delays > 10usec. According to my test results > with Neonode zForce touchscreen driver, usleep_range indeed > reduces CPU load. > >

Re: [PATCH] i2c: imx: use usleep_range(50,100) instead of udelay(50)

2016-04-26 Thread Dirk Behme
On 26.04.2016 13:02, Vladimir Zapolskiy wrote: Hi Dirk, On 26.04.2016 09:27, Dirk Behme wrote: From: Oleksij Rempel Documentation/timers/timers-howto.txt recommends to use usleep_range on delays > 10usec. According to my test results with Neonode zForce touchscreen

Re: [PATCH] i2c: imx: use usleep_range(50,100) instead of udelay(50)

2016-04-26 Thread Dirk Behme
On 26.04.2016 13:02, Vladimir Zapolskiy wrote: Hi Dirk, On 26.04.2016 09:27, Dirk Behme wrote: From: Oleksij Rempel Documentation/timers/timers-howto.txt recommends to use usleep_range on delays > 10usec. According to my test results with Neonode zForce touchscreen driver, usleep_range

Re: [PATCH] i2c: imx: use usleep_range(50,100) instead of udelay(50)

2016-04-26 Thread Vladimir Zapolskiy
Hi Dirk, On 26.04.2016 09:27, Dirk Behme wrote: > From: Oleksij Rempel > > Documentation/timers/timers-howto.txt recommends to use > usleep_range on delays > 10usec. According to my test results > with Neonode zForce touchscreen driver, usleep_range indeed > reduces CPU

Re: [PATCH] i2c: imx: use usleep_range(50,100) instead of udelay(50)

2016-04-26 Thread Vladimir Zapolskiy
Hi Dirk, On 26.04.2016 09:27, Dirk Behme wrote: > From: Oleksij Rempel > > Documentation/timers/timers-howto.txt recommends to use > usleep_range on delays > 10usec. According to my test results > with Neonode zForce touchscreen driver, usleep_range indeed > reduces CPU load. > > Stats

[PATCH] i2c: imx: use usleep_range(50,100) instead of udelay(50)

2016-04-26 Thread Dirk Behme
From: Oleksij Rempel Documentation/timers/timers-howto.txt recommends to use usleep_range on delays > 10usec. According to my test results with Neonode zForce touchscreen driver, usleep_range indeed reduces CPU load. Stats collected with "./perf record -a -g -F 1000

[PATCH] i2c: imx: use usleep_range(50,100) instead of udelay(50)

2016-04-26 Thread Dirk Behme
From: Oleksij Rempel Documentation/timers/timers-howto.txt recommends to use usleep_range on delays > 10usec. According to my test results with Neonode zForce touchscreen driver, usleep_range indeed reduces CPU load. Stats collected with "./perf record -a -g -F 1000 sleep 10" i2c-imx with