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| author | Ezequiel Garcia <ezequiel.garcia@free-electrons.com> | 2013-04-10 23:04:03 +0400 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2013-04-11 21:29:08 +0400 |
| commit | a7d4f81821f7eec3175f8e23dd6949c71ab2da43 (patch) | |
| tree | b4e66bdae870c8a7cf66b1c6e744169a1665131c /arch/arm | |
| parent | da8d1b38356853c37116f9afa29f15648d7fb159 (diff) | |
| download | linux-a7d4f81821f7eec3175f8e23dd6949c71ab2da43.tar.xz | |
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>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts index 3818a82176a2..b5c5f4d43688 100644 --- a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts +++ b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts @@ -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>; + }; + }; }; }; |