linux-kernel - [PATCH v1 1/6] dt-bindings: i2c: npcm: support NPCM845

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Message-Id: <20220207063338.6570-2-warp5tw@gmail.com>
Date:   Mon,  7 Feb 2022 14:33:33 +0800
From:   Tyrone Ting <warp5tw@...il.com>
To:     avifishman70@...il.com, tmaimon77@...il.com, tali.perry1@...il.com,
        venture@...gle.com, yuenn@...gle.com, benjaminfair@...gle.com,
        robh+dt@...nel.org, krzysztof.kozlowski@...onical.com,
        semen.protsenko@...aro.org, yangyicong@...ilicon.com,
        wsa@...nel.org, jie.deng@...el.com, sven@...npeter.dev,
        bence98@....bme.hu, lukas.bulwahn@...il.com, arnd@...db.de,
        olof@...om.net, andriy.shevchenko@...ux.intel.com,
        warp5tw@...il.com, tali.perry@...oton.com, Avi.Fishman@...oton.com,
        tomer.maimon@...oton.com, KWLIU@...oton.com, JJLIU0@...oton.com,
        kfting@...oton.com
Cc:     openbmc@...ts.ozlabs.org, linux-i2c@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1 1/6] dt-bindings: i2c: npcm: support NPCM845

From: Tyrone Ting <kfting@...oton.com>

This commit adds compatible and syscon description for NPCM845 i2c module.

Fixes: 56a1485b102e ("i2c: npcm7xx: Add Nuvoton NPCM I2C controller driver")
Signed-off-by: Tyrone Ting <kfting@...oton.com>
Signed-off-by: Tali Perry <tali.perry1@...il.com>
---
 .../bindings/i2c/nuvoton,npcm7xx-i2c.yaml     | 21 ++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/Documentation/devicetree/bindings/i2c/nuvoton,npcm7xx-i2c.yaml b/Documentation/devicetree/bindings/i2c/nuvoton,npcm7xx-i2c.yaml
index 128444942aec..05e58f44b03a 100644
--- a/Documentation/devicetree/bindings/i2c/nuvoton,npcm7xx-i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/nuvoton,npcm7xx-i2c.yaml
@@ -7,17 +7,22 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 title: nuvoton NPCM7XX I2C Controller Device Tree Bindings
 
 description: |
-  The NPCM750x includes sixteen I2C bus controllers. All Controllers support
-  both master and slave mode. Each controller can switch between master and slave
-  at run time (i.e. IPMB mode). Each controller has two 16 byte HW FIFO for TX and
-  RX.
+  The NPCM7XX includes sixteen I2C bus controllers and the NPCM8XX includes
+  twenty-seven I2C bus controllers. NPCM8XX controllers 24-26 are connected on I2C
+  pins in parallel to controllers 8-10.
+  All controllers support both master and slave mode.
+  Each controller can switch between master and slave at run time (i.e. IPMB mode).
+  NPCM7XX I2C controller has two 16 byte HW FIFO for TX and RX and NPCM8XX I2C
+  controller has two 32 byte HW FIFO for TX and RX.
 
 maintainers:
   - Tali Perry <tali.perry1@...il.com>
 
 properties:
   compatible:
-    const: nuvoton,npcm750-i2c
+    enum:
+      - nuvoton,npcm750-i2c
+      - nuvoton,npcm845-i2c
 
   reg:
     maxItems: 1
@@ -36,11 +41,16 @@ properties:
     default: 100000
     enum: [100000, 400000, 1000000]
 
+  syscon:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+    description: The phandle of system manager register node.
+
 required:
   - compatible
   - reg
   - interrupts
   - clocks
+  - syscon
 
 allOf:
   - $ref: /schemas/i2c/i2c-controller.yaml#
@@ -57,6 +67,7 @@ examples:
         clock-frequency = <100000>;
         interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>;
         compatible = "nuvoton,npcm750-i2c";
+        syscon = <&gcr>;
     };
 
 ...
-- 
2.17.1