Hi all,
Im trying to use a NAND flash (NAND512W3A, from ST) in MPC8360
localbus, with UPM.
My board is based on the mpc8360erdk. I also have a NOR flash
connected in the localbus.
But I have some doubts in how to put this information at the DTS file.
Im doing this way:
[EMAIL PROTECTED] {
.
.
.
};
[EMAIL PROTECTED] {
compatible = "fsl,mpc8360-localbus";
#address-cells = <2>;
#size-cells = <1>;
reg = <e0005000 d8>;
ranges = <0 0 ff800000 1000000 // nor flash, 16 MB
1 0 60000000 4000000>; // nand
flash, 64 MB (512 Mb)
[EMAIL PROTECTED],0 {
compatible = "amd,s29glxxx", "cfi-flash";
reg = <0 0 40000>;
bank-width = <2>;
device-width = <1>;
};
[EMAIL PROTECTED],0 {
compatible = "stmicro,NAND512W3A", "fsl,upm-nand";
reg = <1 0 4000000>; //reg = <1 0 1>;
width = <1>;
upm = "A";
upm-addr-offset = <16>;
upm-cmd-offset = <8>;
gpios = <4 18>;
gpio-parent = <&qe_pio>;
wait-pattern;
wait-write;
};
};
In range information:
ranges = <0 0 ff800000 1000000 // nor flash, 16 MB
1 0 60000000 4000000>; // nand flash, 64 MB (512 Mb)
i dont know what ff800000 and 60000000 means,
i got those values from some posts in the mail-list. I also searched
the datasheet and didnt find anything about those values.
The size values, 1000000 and 4000000, im using the memory density.
Is this correct? Cause i read some posts that the nand size was very
small, like 32K, seems that its something like the block size of
nand.
In reg information:
reg = <0 0 1000000>; // nor-flash
reg = <1 0 4000000>; // nand-flash
Dont know if its correct. The third argument i used the size,
but the second i dont know what value use.
In other post by Anton, i saw something like these:
[EMAIL PROTECTED],0 {
flash {
...
};
};
Should i use it?
I must confess, im really confuse about all this stuffs.
I read linux/Documentation/powerpc/booting-without-of.txt but didnt
clarify so much.
Cheers,
--
Alemao
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