[PATCH] sysdev,mv64x60: MV64x60 device bus
Remi Machet
rmachet at slac.stanford.edu
Tue Apr 29 05:22:36 EST 2008
On Mon, 2008-04-28 at 11:09 -0700, Dale Farnsworth wrote:
> On Mon, Apr 28, 2008 at 10:12:09AM -0700, Remi Machet wrote:
> > Follow up of my email of 4/16/2008 titled "MV64x60 device bus".
> > For each mv64360 entry in the OpenFirmware database, add the
> > registration of an of_bus to take care of devices connected to
> > the MV64x60 asynchronous devices controller.
>
> I'd like to see your dts file to see exactly how you're using it.
Here it is, I removed everything that is not related to the subject:
/dts-v1/;
/ {
#address-cells = <1>;
#size-cells = <1>;
model = "C2K";
compatible = "GEFanuc,C2K";
coherency-off;
<...>
system-controller at d8000000 { /* Marvell Discovery */
#address-cells = <1>;
#size-cells = <1>;
model = "mv64460";
compatible = "marvell,mv64360";
<...>
/* Devices attached to the device controller */
devicebus {
device_type = "devicectrl";
#address-cells = <1>;
#size-cells = <1>;
nor_flash {
compatible = "cfi-flash";
reg = <0xf8000000 0x8000000>; /* 128MB */
bank-width = <4>;
device-width = <1>;
#address-cells = <1>;
#size-cells = <1>;
partition at 0 {
label = "boot";
reg = <0x00000000 0x00080000>;
};
partition at 40000 {
label = "kernel";
reg = <0x00080000 0x00400000>;
};
partition at 440000 {
label = "initrd";
reg = <0x00480000 0x00B80000>;
};
partition at 1000000 {
label = "rootfs";
reg = <0x01000000 0x06800000>;
};
partition at 7800000 {
label = "recovery";
reg = <0x07800000 0x00800000>;
read-only;
};
};
};
};
<...>
};
>
> The only problem I see now is that you have introduced a new device
> type, "devicectrl". New device types are frowned upon. It's better
> to match based on the compatible field. Maybe use
> "marvell,mv64306-devctrl" or similar.
>
Do you mean having the DTS file look like this:
<...>
devicebus {
compatible = "marvell,mv64306-devctrl";
#address-cells = <1>;
#size-cells = <1>;
nor_flash {
compatible = "cfi-flash";
reg = <0xf8000000 0x8000000>;
<...>
};
};
Remi
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