From: Tony Lindgren <tony@atomide.com>
To: Robert Nelson <robertcnelson@gmail.com>
Cc: Matt Ranostay <mranostay@gmail.com>,
robh+dt@kernel.org, mark.rutland@arm.com,
Russell King <linux@arm.linux.org.uk>,
"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
devicetree <devicetree@vger.kernel.org>,
linux kernel <linux-kernel@vger.kernel.org>,
pantelis.antoniou@gmail.com, matt.porter@linaro.org
Subject: Re: [PATCH v2] ARM: dts: am335x-bone-common: Add i2c2 definition
Date: Mon, 12 May 2014 13:15:17 -0700 [thread overview]
Message-ID: <20140512201517.GC5668@atomide.com> (raw)
In-Reply-To: <CAOCHtYiYwx_bEsyqkbUTTAbhBYESzvfBOOYeVuFXPS1dDy0ZKA@mail.gmail.com>
* Robert Nelson <robertcnelson@gmail.com> [140512 13:00]:
> >>
> >> + i2c2_pins: pinmux_i2c2_pins {
> >> + pinctrl-single,pins = <
> >> + 0x178 (PIN_INPUT_PULLUP | MUX_MODE3) /* uart1_ctsn.i2c2_sda */
> >> + 0x17c (PIN_INPUT_PULLUP | MUX_MODE3) /* uart1_rtsn.i2c2_scl */
> >> + >;
> >> + };
> >> +
> >> uart0_pins: pinmux_uart0_pins {
> >> pinctrl-single,pins = <
> >> 0x170 (PIN_INPUT_PULLUP | MUX_MODE0) /* uart0_rxd.uart0_rxd */
> >>
> >> @@ -222,6 +229,15 @@
> >>
> >> };
> >>
> >> +
> >> +&i2c2 {
> >> + pinctrl-names = "default";
> >> + pinctrl-0 = <&i2c2_pins>;
> >> +
> >> + status = "okay";
> >> + clock-frequency = <100000>;
> >> +};
> >> +
> >
> > If these pins are not used for i2c2 on some capes, this device
> > should be set to status = "disabled" state by default. Then
> > u-boot could re-enable it on the boards that have i2c2 in use.
>
> To-date, this is the i2c bus that all capes have placed an at24 eeprom
> for cape identification.
And how many capes actually implement the eeprom cape identification
out of the available capes? :)
Tony
next prev parent reply other threads:[~2014-05-12 20:15 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-10 1:43 [PATCH v2] ARM: dts: am335x-bone-common: Add i2c2 definition Matt Ranostay
2014-05-12 19:50 ` Tony Lindgren
2014-05-12 19:59 ` Robert Nelson
2014-05-12 20:15 ` Tony Lindgren [this message]
2014-05-12 20:27 ` Robert Nelson
2014-05-12 20:42 ` Tony Lindgren
2014-05-12 20:57 ` Robert Nelson
2014-05-12 21:07 ` Tony Lindgren
2014-05-13 12:53 ` Tom Rini
2014-05-13 14:06 ` Javier Martinez Canillas
2014-05-13 14:13 ` Tom Rini
2014-05-13 14:22 ` Matt Porter
2014-05-13 14:39 ` Javier Martinez Canillas
2014-05-13 17:07 ` Pantelis Antoniou
2014-05-13 17:51 ` Javier Martinez Canillas
2014-05-13 20:24 ` John Syn
2014-05-14 3:39 ` Pantelis Antoniou
2014-05-14 5:44 ` John Syn
2014-05-14 7:12 ` Javier Martinez Canillas
2014-05-14 3:24 ` Pantelis Antoniou
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