defining platform_devices in DTS
Pieter
phenning at vastech.co.za
Wed Feb 25 20:20:52 EST 2009
Hi all
I am busy porting my board to Linux 2.6.27 from 2.6.19. The old Linux
was compiled using the ppc architecture, and had a "platform_device"
struct ure containing the custom devices on my board. (
/arch/ppc/platform/sdh8548.c and /arch/ppc/platform/sdh8548.h )
I assume these devices should now be declared in the device tree source.
Building the new Linux using the powerpc architecture, but I am
strugeling translating teh information defined in the "platform_device"
to a device tree node. In particular what happens to the resource.flags
could anyone help please?
Below is the "platform_device" definition and my interpretation of how
it should look in the device tree. Am I on the right track?
thanks pieter
platform_device definition:
{
.name = "bio",
.id = 0,
.dev.platform_data = NULL,
.num_resources = 2,
.resource = (struct resource[]) {
{
.start = 0xe0100000,
.end = 0xe0100000 + 0x10000 -1,
.flags = IORESOURCE_MEM, /* 0x00000200 */
},
{
.name = "int",
.start = MPC85xx_IRQ_EXT0, /* 48 +
MPC85xx_OPENPIC_IRQ_OFFSET */
.end = MPC85xx_IRQ_EXT0,
.flags = IORESOURCE_IRQ, /*0x00000400 */
},
},
FDT source:
localbus at e0000000 {
#address-cells = <2>;
#size-cells = <1>;
compatible = "simple-bus";
reg = <0xe0000000 0x5000>;
interrupt-parent = <&mpic>;
ranges = <
0x0 0x0 0xf8000000 0x07ffffff /*128MB Flash*/
0x1 0x0 0xe0200000 0x00200000 /*2MB FPGA*/
0x2 0x0 0xe0100000 0x00100000 /*1MB BIO CPLD*/
>;
bio at 2,0 {
compatible = "wrs,epld-localbus";
#address-cells = <2>;
#size-cells = <1>;
//interrupt-parent = <&mpic>;
//interrupts = <48>;
reg = <0x2 0x0 0x0010000>;
ranges = <0x0 0x0 0x2 0x0 0x00100000>;
};
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