linux-kernel - [PATCH v1 1/2] dt-binding: bmc: Add NPCM7xx LPC BPC documentation

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Date:   Wed,  4 Jul 2018 12:14:26 +0300
From:   Tomer Maimon <tmaimon77@...il.com>
To:     robh+dt@...nel.org, mark.rutland@....com, arnd@...d.de,
        gregkh@...uxfoundation.org, avifishman70@...il.com,
        yuenn@...gle.com, brendanhiggins@...gle.com, venture@...gle.com,
        joel@....id.au
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-hwmon@...r.kernel.org, openbmc@...ts.ozlabs.org,
        Tomer Maimon <tmaimon77@...il.com>
Subject: [PATCH v1 1/2] 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.

Signed-off-by: Tomer Maimon <tmaimon77@...il.com>
---
 .../devicetree/bindings/bmc/npcm7xx-lpc-bpc.txt    | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/bmc/npcm7xx-lpc-bpc.txt

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@...07040 {
+		compatible = "nuvoton,npcm7xx-lpc-bpc";
+		reg = <0xf0007040 0x14>;
+		monitor-ports = <0x80>;
+		interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
+	};
-- 
2.14.1