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ARM: mvebu: Add support for NOR flash device on Openblocks AX3 board 

The Plat'home Openblocks AX3 has a 128 MiB NOR flash device connected
to the Device Bus. This commit adds the device tree node to support this device.

The 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>
hifive-unleashed-5.1
Ezequiel Garcia 2013-04-10 16:04:03 -03:00 committed by Jason Cooper
parent da8d1b3835
commit a7d4f81821
1 changed files with 29 additions and 0 deletions
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29
arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
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@ -139,5 +139,34 @@
usb@d0051000 {
status = "okay";
};
devbus-bootcs@d0010400 {
status = "okay";
ranges = <0 0xf0000000 0x8000000>; /* @addr 0xf000000, size 0x8000000 */
/* 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 128 MiB */
nor@0 {
compatible = "cfi-flash";
reg = <0 0x8000000>;
bank-width = <2>;
};
};
};
};