RE: [Patch V5] ARM: dts: imx6qdl-sabresd: add i2c pinctrl gpio state for bus recovery

Ping... From: Gao Pan Sent: Friday, September 11, 2015 6:43 PM > To: w...@the-dreams.de; u.kleine-koe...@pengutronix.de; > shawn...@kernel.org; ker...@pengutronix.de > Cc: linux-i2c@vger.kernel.org; Li Frank-B20596; Duan Fugang-B38611; Gao > Pan-B54642;

RE: [Patch V5] i2c: imx: implement bus recovery

Ping... From: Gao Pan Sent: Friday, September 11, 2015 6:43 PM > To: w...@the-dreams.de; u.kleine-koe...@pengutronix.de; > shawn...@kernel.org; ker...@pengutronix.de > Cc: linux-i2c@vger.kernel.org; Li Frank-B20596; Duan Fugang-B38611; Gao > Pan-B54642;

[PATCH v2 1/1] i2c: core: fix a code to suppress a warning

There is a warning when compiling i2c-core.c drivers/i2c/i2c-core.c:2561:36: warning: dubious: x | !y Fix it by using a plain bitwise AND since I2C_M_RD is a bit 0 and thus we are on the safe side. Signed-off-by: Andy Shevchenko --- drivers/i2c/i2c-core.c | 2

[Patch V8] i2c: imx: add runtime pm support to improve the performance

In our former i2c driver, i2c clk is enabled and disabled in xfer function, which contributes to power saving. However, the clk enable process brings a busy wait delay until the core is stable. As a result, the performance is sacrificed. To weigh the power consumption and i2c bus performance,