diff options
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt b/Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt index bcc30bac6831..70558c3f3682 100644 --- a/Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt +++ b/Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt | |||
| @@ -5,14 +5,21 @@ Required properties: | |||
| 5 | first is "fsl,CHIP-msi", where CHIP is the processor(mpc8610, mpc8572, | 5 | first is "fsl,CHIP-msi", where CHIP is the processor(mpc8610, mpc8572, |
| 6 | etc.) and the second is "fsl,mpic-msi" or "fsl,ipic-msi" depending on | 6 | etc.) and the second is "fsl,mpic-msi" or "fsl,ipic-msi" depending on |
| 7 | the parent type. | 7 | the parent type. |
| 8 | |||
| 8 | - reg : should contain the address and the length of the shared message | 9 | - reg : should contain the address and the length of the shared message |
| 9 | interrupt register set. | 10 | interrupt register set. |
| 11 | |||
| 10 | - msi-available-ranges: use <start count> style section to define which | 12 | - msi-available-ranges: use <start count> style section to define which |
| 11 | msi interrupt can be used in the 256 msi interrupts. This property is | 13 | msi interrupt can be used in the 256 msi interrupts. This property is |
| 12 | optional, without this, all the 256 MSI interrupts can be used. | 14 | optional, without this, all the 256 MSI interrupts can be used. |
| 15 | Each available range must begin and end on a multiple of 32 (i.e. | ||
| 16 | no splitting an individual MSI register or the associated PIC interrupt). | ||
| 17 | |||
| 13 | - interrupts : each one of the interrupts here is one entry per 32 MSIs, | 18 | - interrupts : each one of the interrupts here is one entry per 32 MSIs, |
| 14 | and routed to the host interrupt controller. the interrupts should | 19 | and routed to the host interrupt controller. the interrupts should |
| 15 | be set as edge sensitive. | 20 | be set as edge sensitive. If msi-available-ranges is present, only |
| 21 | the interrupts that correspond to available ranges shall be present. | ||
| 22 | |||
| 16 | - interrupt-parent: the phandle for the interrupt controller | 23 | - interrupt-parent: the phandle for the interrupt controller |
| 17 | that services interrupts for this device. for 83xx cpu, the interrupts | 24 | that services interrupts for this device. for 83xx cpu, the interrupts |
| 18 | are routed to IPIC, and for 85xx/86xx cpu the interrupts are routed | 25 | are routed to IPIC, and for 85xx/86xx cpu the interrupts are routed |