On Fri, May 19, 2017 at 9:05 AM, Dong Aisheng <aisheng.dong@xxxxxxx> wrote: > i.MX 7ULP has three IOMUXC instances: IOMUXC0 for M4 ports, > IOMUXC1 for A7 ports and IOMUXC DDR for DDR interface. > > This patch adds the IOMUXC1 support for A7. > > Cc: Rob Herring <robh+dt@xxxxxxxxxx> > Cc: Mark Rutland <mark.rutland@xxxxxxx> > Cc: devicetree@xxxxxxxxxxxxxxx > Cc: Linus Walleij <linus.walleij@xxxxxxxxxx> > Cc: Shawn Guo <shawnguo@xxxxxxxxxx> > Signed-off-by: Dong Aisheng <aisheng.dong@xxxxxxx> (...) > +=== Pin Configuration Node === > +- pins: One integers array, represents a group of pins mux setting. > + The format is fsl,pins = <PIN_FUNC_ID>, PIN_FUNC_ID is a pin working on > + a specific function. > + > + NOTE: i.MX7ULP PIN_FUNC_ID consists of 4 integers as it shares one mux > + and config register as follows: > + <mux_conf_reg input_reg mux_mode input_val> > + > + Refer to imx7ulp-pinfunc.h in in device tree source folder for all > + available imx7ulp PIN_FUNC_ID. > + > +Optional Properties: > +- nxp,output-buffer-enable: Bool. Output buffer enabled > +- nxp,input-buffer-enable: Bool. Input buffer enabled > +- drive-strength Integer. Controls Drive Strength > + 0: Standard > + 1: Hi Driver (...) WELL LOOK AT THAT Custom input/output buffer enable properties eh? We had this really really long discussion with the Renesas people about whether they make this a custom property or a generic one or whether anyone else would ever have the same need. This would be a vote for adding output-buffer-enable and input-buffer-enable as generic properies hm? UNLESS the existing device tree properties already cover the usecases. Andy has made some good points there. Can you please read up on the discussion thread for subject "[PATCH v5 01/10] pinctrl: generic: Add bi-directional and output-enable" and contribute to this discussion? Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
