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author | Tomer Maimon <tmaimon77@gmail.com> | 2019-01-14 16:07:01 +0300 |
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committer | Joel Stanley <joel@jms.id.au> | 2020-08-06 03:30:29 +0300 |
commit | d87623905cc9ba85654a2a2d9ce991eec18262bb (patch) | |
tree | 3fb79db95981c364c1596217bfef839991f9c315 /Documentation | |
parent | 27b535324074420e8da4ea7797706f40b265ddb9 (diff) | |
download | linux-d87623905cc9ba85654a2a2d9ce991eec18262bb.tar.xz |
dt-binding: bmc: Add NPCM7xx LPC BPC documentation
Added device tree binding documentation for Nuvoton BMC
NPCM7xx BIOS Post Code (BPC).
The NPCM7xx BPC monitoring two configurable I/O addresses
written by the host on Low Pin Count (LPC) bus.
OpenBMC-Staging-Count: 8
Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/bmc/npcm7xx-lpc-bpc.txt | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/bmc/npcm7xx-lpc-bpc.txt b/Documentation/devicetree/bindings/bmc/npcm7xx-lpc-bpc.txt new file mode 100644 index 000000000000..0832c9cbea32 --- /dev/null +++ b/Documentation/devicetree/bindings/bmc/npcm7xx-lpc-bpc.txt @@ -0,0 +1,26 @@ +Nuvoton NPCM7xx LPC BPC interface + +Nuvoton BMC NPCM7xx BIOS Post Code (BPC) monitoring two +configurable I/O addresses written by the host on the +Low Pin Count (LPC) bus, the capure data stored in 128-word FIFO. + +NPCM7xx BPC supports capture double words, when using capture +double word only I/O address 1 is monitored. + +Required properties for lpc_bpc node +- compatible : "nuvoton,npcm750-lpc-bpc" for Poleg NPCM7XX. +- reg : specifies physical base address and size of the registers. +- interrupts : contain the LPC BPC with flags for falling edge. +- monitor-ports : contain monitor I/O addresses, at least one monitor I/O + address required + +Optional property for lpc_bpc node +- bpc-en-dwcapture : enable capture double words support. + +Example: + lpc_bpc: lpc-bpc@f0007040 { + compatible = "nuvoton,npcm7xx-lpc-bpc"; + reg = <0xf0007040 0x14>; + monitor-ports = <0x80>; + interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>; + }; |