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ARM: mvebu: Add support for NOR flash device on Armada XP-GP board

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The Armada XP Development Board DB-MV784MP-GP has a NOR flash device
connected to the Device Bus. This commit adds the device tree node
to support this device.

This SoC supports a flexible and dynamic decoding window allocation
scheme; but since this feature is still not implemented we need
to specify the window base address in the device tree node itself.

This base address has been selected in a completely arbitrary fashion.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This commit is contained in:
Ezequiel Garcia 2013-04-10 16:04:02 -03:00 • committed by Jason Cooper
parent 3d76e1f386
commit da8d1b3835
1 changed files with 29 additions and 0 deletions
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29
arch/arm/boot/dts/armada-xp-gp.dts
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@ -109,5 +109,34 @@
spi-max-frequency = <108000000>; spi-max-frequency = <108000000>;
}; };
}; };
devbus-bootcs@d0010400 {
status = "okay";
ranges = <0 0xf0000000 0x1000000>; /* @addr 0xf000000, size 0x1000000 */
/* Device Bus parameters are required */
/* Read parameters */
devbus,bus-width = <8>;
devbus,turn-off-ps = <60000>;
devbus,badr-skew-ps = <0>;
devbus,acc-first-ps = <124000>;
devbus,acc-next-ps = <248000>;
devbus,rd-setup-ps = <0>;
devbus,rd-hold-ps = <0>;
/* Write parameters */
devbus,sync-enable = <0>;
devbus,wr-high-ps = <60000>;
devbus,wr-low-ps = <60000>;
devbus,ale-wr-ps = <60000>;
/* NOR 16 MiB */
nor@0 {
compatible = "cfi-flash";
reg = <0 0x1000000>;
bank-width = <2>;
};
};
}; };
}; };