linux-kernel - [PATCH v2 1/3] dt-binding: reset: add NPCM reset controller documentation

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Date:   Mon, 28 Oct 2019 17:54:01 +0200
From:   Tomer Maimon <tmaimon77@...il.com>
To:     p.zabel@...gutronix.de, robh+dt@...nel.org, mark.rutland@....com,
        yuenn@...gle.com, venture@...gle.com, benjaminfair@...gle.com,
        avifishman70@...il.com, joel@....id.au
Cc:     openbmc@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Tomer Maimon <tmaimon77@...il.com>
Subject: [PATCH v2 1/3] dt-binding: reset: add NPCM reset controller documentation

Added device tree binding documentation for Nuvoton BMC
NPCM reset controller.

Signed-off-by: Tomer Maimon <tmaimon77@...il.com>
---
 .../bindings/reset/nuvoton,npcm-reset.txt     | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/reset/nuvoton,npcm-reset.txt

diff --git a/Documentation/devicetree/bindings/reset/nuvoton,npcm-reset.txt b/Documentation/devicetree/bindings/reset/nuvoton,npcm-reset.txt
new file mode 100644
index 000000000000..94793285a2ac
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/nuvoton,npcm-reset.txt
@@ -0,0 +1,35 @@
+Nuvoton NPCM Reset controller
+
+In the NPCM Reset controller boot the USB PHY, USB host
+and USB device initialize.
+
+Required properties:
+- compatible : "nuvoton,npcm750-reset" for NPCM7XX BMC
+- reg : specifies physical base address and size of the register.
+- #reset-cells: must be set to 1
+
+Optional property:
+- nuvoton,sw-reset-number - Contains the software reset number to restart the SoC.
+  NPCM7xx contain four software reset that represent numbers 1 to 4.
+
+  If 'nuvoton,sw-reset-number' is not specfied software reset is disabled.
+
+Example:
+	rstc: rstc@...01000 {
+		compatible = "nuvoton,npcm750-reset";
+		reg = <0xf0801000 0x70>;
+		#reset-cells = <1>;
+		nuvoton,sw-reset-number = <2>;
+	};
+
+Specifying reset lines connected to IP NPCM7XX modules
+======================================================
+example:
+
+        spi0: spi@..... {
+                ...
+                resets = <&rstc NPCM7XX_RESET_PSPI1>;
+                ...
+        };
+
+The index could be found in <dt-bindings/reset/nuvoton,npcm7xx-reset.h>.
-- 
2.22.0