Thread (1 message) 1 message, 1 author, 2011-08-07

Shouldn't DT preserve pdev name and id to allow platform_match to work?

From: Grant Likely <hidden>
Date: 2011-08-07 04:13:30
Also in: linux-devicetree, linux-omap

On Fri, Aug 05, 2011 at 02:31:16PM +0200, Cousson, Benoit wrote:
On 8/5/2011 12:02 PM, Barry Song wrote:
quoted
quoted
auxdata passes platform_data and overrides the device name when there
is no way easy way to make the driver work without it.  It handles the
the current implementation of clocks and regulators which aren't yet
populated from the device tree.  It will go away when clock&
regulator bindings are implemented.
Yes. As OF_DEV_AUXDATA_ID still requires hardware information like
0x48000100 as below, it seems it is not
consistent with the origin purpose of ARM DT.
OF_DEV_AUXDATA_ID("ti,omap-i2c", 0x48000100, "omap-i2c.1", 1,&i2c_pdata)
And the information 0x48000100 is something that doesn't want to be in
kernel codes.it should be only in dts.
FWIW, I do not care about the physical address at all. This is just
used by the of_dev_lookup function to get the proper instance for a
device compatible type.
That's the only way for the OF_DEV_AUXDATA to work, but in theory
you could do the same as soon as you provide the id. So
OF_DEV_AUXDATA_ID could avoid it.

Since OF_DEV_AUXDATA_ID seems to be already dead before it even
reaches the mainline, let's forget about that.
Actually, I'm planning to merge OF_DEV_AUXDATA_ID().  I was hoping to
avoid it but there was enough hard-to-solve-quickly problems that I've
relented.

Adding the match table is not hard-to-solve though, so I'm not
relenting on that point.  :-)

g.
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