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Message-ID: <1519581618.91697.261.camel@freebsd.org>
Subject: Re: Help, please, with getting a custom I2C real time clock module
 to load
From: Ian Lepore <ian@freebsd.org>
To: Lee D <embaudarm@gmail.com>, freebsd-hackers@freebsd.org
Date: Sun, 25 Feb 2018 11:00:18 -0700
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References: <CANC_bnOe1-+BQocKfNraJuq4UjbYe=ita=0qsy65EVMdhGQDLQ@mail.gmail.com>
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On Sun, 2018-02-25 at 09:48 -0500, Lee D wrote:
> Hi Everyone,
> 
> I have written a new I2C driver (for the Xilinx Zynq) and a new real
> time clock chip driver (for the ST M41T82) to use with hardware on my
> custom board.  This is for 11.0.1.
> [...]

I just remembered... another piece of non-obvious magic that is
required to be an i2c host controller whose bus is managed by
ofw_iicbus is that your driver has to implement the ofw_bus_get_node
method.  The implementation is trivial, just grab the one out of
arm/freescale/imx/imx_i2c.c.

-- Ian