diff options
Diffstat (limited to 'arch/arm/boot/dts/intel-ixp4xx-reference-design.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/intel-ixp4xx-reference-design.dtsi | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/intel-ixp4xx-reference-design.dtsi b/arch/arm/boot/dts/intel-ixp4xx-reference-design.dtsi new file mode 100644 index 000000000..146352ba8 --- /dev/null +++ b/arch/arm/boot/dts/intel-ixp4xx-reference-design.dtsi @@ -0,0 +1,134 @@ +// SPDX-License-Identifier: ISC +/* + * Device Tree include file for Intel reference designs for the + * XScale Network Processors in the IXP 4xx series. Common device + * set-up for IXDP425, IXCDP1100, KIXRP435 and IXDP465. + */ + +/ { + memory@0 { + /* + * The board supports up to 256 MB of memory. Here we put in + * 64 MB and this may be modified by the boot loader. + */ + device_type = "memory"; + reg = <0x00000000 0x4000000>; + }; + + chosen { + bootargs = "console=ttyS0,115200n8"; + stdout-path = "uart0:115200n8"; + }; + + aliases { + serial0 = &uart0; + }; + + i2c { + compatible = "i2c-gpio"; + sda-gpios = <&gpio0 7 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>; + scl-gpios = <&gpio0 6 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>; + #address-cells = <1>; + #size-cells = <0>; + + eeprom@50 { + /* + * Philips PCF8582C-2T/03 512byte I2C EEPROM + * should behave like an Atmel 24c04. + */ + compatible = "atmel,24c04"; + reg = <0x50>; + pagesize = <16>; + size = <512>; + read-only; + }; + }; + + soc { + bus@c4000000 { + /* Flash memory defined per-variant */ + nand-controller@3,0 { + /* Some designs have a NAND on CS3 enable it here if present */ + status = "disabled"; + + /* + * gen_nand needs to be extended and documented to get + * command byte = 1 and address byte = 2 from the device + * tree. + */ + compatible = "gen_nand"; + + /* Expansion bus set-up */ + intel,ixp4xx-eb-t1 = <0>; + intel,ixp4xx-eb-t2 = <0>; + intel,ixp4xx-eb-t3 = <1>; // 1 cycle extra strobe phase + intel,ixp4xx-eb-t4 = <0>; + intel,ixp4xx-eb-t5 = <0>; + intel,ixp4xx-eb-cycle-type = <0>; // Intel cycle type + intel,ixp4xx-eb-byte-access-on-halfword = <0>; + intel,ixp4xx-eb-mux-address-and-data = <0>; + intel,ixp4xx-eb-ahb-split-transfers = <0>; + intel,ixp4xx-eb-write-enable = <1>; + intel,ixp4xx-eb-byte-access = <1>; + + /* 512 bytes memory window */ + reg = <3 0x00000000 0x200>; + nand-on-flash-bbt; + nand-ecc-mode = "soft_bch"; + nand-ecc-step-size = <512>; + nand-ecc-strength = <4>; + nce-gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>; /* NCE */ + + label = "ixp400 NAND"; + + partitions { + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + + fs@0 { + label = "ixp400 NAND FS 0"; + reg = <0x0 0x800000>; + }; + fs@800000 { + label = "ixp400 NAND FS 1"; + reg = <0x800000 0x0>; + }; + }; + }; + }; + + pci@c0000000 { + status = "ok"; + + /* + * Taken from IXDP425 PCI boardfile. + * PCI slots on the BIXMB425BD base card. + * We have up to 4 slots (IDSEL) with 4 swizzled IRQs. + */ + #interrupt-cells = <1>; + interrupt-map-mask = <0xf800 0 0 7>; + interrupt-map = + /* IDSEL 1 */ + <0x0800 0 0 1 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 1 is irq 11 */ + <0x0800 0 0 2 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 1 is irq 10 */ + <0x0800 0 0 3 &gpio0 9 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 1 is irq 9 */ + <0x0800 0 0 4 &gpio0 8 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 1 is irq 8 */ + /* IDSEL 2 */ + <0x1000 0 0 1 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 2 is irq 10 */ + <0x1000 0 0 2 &gpio0 9 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 2 is irq 9 */ + <0x1000 0 0 3 &gpio0 8 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 2 is irq 8 */ + <0x1000 0 0 4 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 2 is irq 11 */ + /* IDSEL 3 */ + <0x1800 0 0 1 &gpio0 9 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 3 is irq 9 */ + <0x1800 0 0 2 &gpio0 8 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 3 is irq 8 */ + <0x1800 0 0 3 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 3 is irq 11 */ + <0x1800 0 0 4 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 3 is irq 10 */ + /* IDSEL 4 */ + <0x2000 0 0 1 &gpio0 8 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 4 is irq 8 */ + <0x2000 0 0 2 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 4 is irq 11 */ + <0x2000 0 0 3 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 4 is irq 10 */ + <0x2000 0 0 4 &gpio0 9 IRQ_TYPE_LEVEL_LOW>; /* INT D on slot 4 is irq 9 */ + }; + }; +}; |