Add PCI to Walnut platform
Subsystems (2)
PATCH 9/21 Add PCI to Walnut platform
This wires up the 4xx PCI support & device-tree bits for the 405GP based Walnut platform.
Signed-off-by Benjamin Herrenschmidt <[email protected]>
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This one is untested, haven't had time to dig my walnut and put it back into working condition. Josh, can you verify that IRQs are working (routing is correct ?) Thanks !
arch/powerpc/boot/dts/walnut.dts | 39 +++++++++++++++++++++++++++++++++++++ arch/powerpc/platforms/40x/Kconfig | 1 2 files changed, 40 insertions(+)
arch/powerpc/boot/dts/walnut.dts +39 -0
@@ -190,6 +190,45 @@ virtual-reg = <f0300005>; }; }; + + PCI0: pci@ec000000 { + device_type = "pci"; + #interrupt-cells = <1>; + #size-cells = <2>; + #address-cells = <3>; + compatible = "ibm,plb405gp-pci", "ibm,plb-pci"; + primary; + reg = <eec00000 8 /* Config space access */ + eed80000 4 /* IACK */ + eed80000 4 /* Special cycle */ + ef480000 40>; /* Internal registers */ + + /* Outbound ranges, one memory and one IO, + * later cannot be changed. Chip supports a second + * IO range but we don't use it for now + */ + ranges = <02000000 0 80000000 80000000 0 20000000 + 01000000 0 00000000 e8000000 0 00010000>; + + /* Inbound 2GB range starting at 0 */ + dma-ranges = <42000000 0 0 0 0 80000000>; + + /* Walnut has all 4 IRQ pins tied together per slot */ + interrupt-map-mask = <f800 0 0 0>; + interrupt-map = < + /* IDSEL 1 */ + 0800 0 0 0 &UIC0 1c 8 + + /* IDSEL 2 */ + 1000 0 0 0 &UIC0 1d 8 + + /* IDSEL 3 */ + 1800 0 0 0 &UIC0 1e 8 + + /* IDSEL 4 */ + 2000 0 0 0 &UIC0 1f 8 + >; + }; }; chosen {
arch/powerpc/platforms/40x/Kconfig +1 -0
@@ -59,6 +59,7 @@ config WALNUT depends on 40x default y select 405GP + select PCI help This option enables support for the IBM PPC405GP evaluation board.