diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2021-05-11 09:44:58 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2021-05-12 01:04:23 +0200 |
| commit | 3babb604a8545a2551772c656cbebd6f40321861 (patch) | |
| tree | 292df00c0fa9cf2515a03acfb4f8110a8644c124 /arch/arm/boot/dts/intel-ixp4xx.dtsi | |
| parent | 152b7a599674d27f26bec1a4fdbac63564d0fc93 (diff) | |
ARM: dts: ixp4xx: Create a proper expansion bus
The IXP4xx expansion bus is 24 bits (256 MB) that is memory
mapped between 0x50000000-0x5fffffff usin a set of chip
selects. The size of the windows is 16 or 32MB defined by
the boot loader system configuration at runtime.
Create a rudimentary simple-bus and move the flash memories
to the expansion bus, inside the SoC.
Cc: Zoltan HERPAI <wigyori@uid0.hu>
Cc: Raylynn Knight <rayknight@me.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/boot/dts/intel-ixp4xx.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/intel-ixp4xx.dtsi | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/intel-ixp4xx.dtsi b/arch/arm/boot/dts/intel-ixp4xx.dtsi index edfd81d9f3da..31371c65ad6d 100644 --- a/arch/arm/boot/dts/intel-ixp4xx.dtsi +++ b/arch/arm/boot/dts/intel-ixp4xx.dtsi @@ -14,6 +14,19 @@ compatible = "simple-bus"; interrupt-parent = <&intcon>; + /* + * The IXP4xx expansion bus is a set of 16 or 32MB + * windows in the 256MB space from 0x50000000 to + * 0x5fffffff. + */ + bus@50000000 { + compatible = "simple-bus"; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x00000000 0x50000000 0x10000000>; + dma-ranges = <0x00000000 0x50000000 0x10000000>; + }; + qmgr: queue-manager@60000000 { compatible = "intel,ixp4xx-ahb-queue-manager"; reg = <0x60000000 0x4000>; |