linux-kernel - [RFC PATCH 13/17] dt-bindings: ipmi: aspeed: Introduce a v2 binding for KCS

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Message-Id: <20190726053959.2003-14-andrew@aj.id.au>
Date:   Fri, 26 Jul 2019 15:09:55 +0930
From:   Andrew Jeffery <andrew@...id.au>
To:     linux-aspeed@...ts.ozlabs.org
Cc:     Andrew Jeffery <andrew@...id.au>, robh+dt@...nel.org,
        mark.rutland@....com, joel@....id.au, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Haiyue Wang <haiyue.wang@...ux.intel.com>,
        Corey Minyard <minyard@....org>,
        openipmi-developer@...ts.sourceforge.net
Subject: [RFC PATCH 13/17] dt-bindings: ipmi: aspeed: Introduce a v2 binding for KCS

The v2 binding utilises reg and renames some of the v1 properties.

Cc: Haiyue Wang <haiyue.wang@...ux.intel.com>
Cc: Corey Minyard <minyard@....org>
Cc: openipmi-developer@...ts.sourceforge.net
Signed-off-by: Andrew Jeffery <andrew@...id.au>
---
 .../bindings/ipmi/aspeed-kcs-bmc.txt          | 20 +++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/ipmi/aspeed-kcs-bmc.txt b/Documentation/devicetree/bindings/ipmi/aspeed-kcs-bmc.txt
index d98a9bf45d6c..76b180ebbde4 100644
--- a/Documentation/devicetree/bindings/ipmi/aspeed-kcs-bmc.txt
+++ b/Documentation/devicetree/bindings/ipmi/aspeed-kcs-bmc.txt
@@ -1,9 +1,10 @@
-* Aspeed KCS (Keyboard Controller Style) IPMI interface
+# Aspeed KCS (Keyboard Controller Style) IPMI interface
 
 The Aspeed SOCs (AST2400 and AST2500) are commonly used as BMCs
 (Baseboard Management Controllers) and the KCS interface can be
 used to perform in-band IPMI communication with their host.
 
+## v1
 Required properties:
 - compatible : should be one of
     "aspeed,ast2400-kcs-bmc"
@@ -12,14 +13,21 @@ Required properties:
 - kcs_chan : The LPC channel number in the controller
 - kcs_addr : The host CPU IO map address
 
+## v2
+Required properties:
+- compatible : should be one of
+    "aspeed,ast2400-kcs-bmc-v2"
+    "aspeed,ast2500-kcs-bmc-v2"
+- reg : The address and size of the IDR, ODR and STR registers
+- interrupts : interrupt generated by the controller
+- slave-reg : The host CPU IO map address
 
 Example:
 
-    kcs3: kcs3@0 {
-        compatible = "aspeed,ast2500-kcs-bmc";
-        reg = <0x0 0x80>;
+    kcs3: kcs@24 {
+        compatible = "aspeed,ast2500-kcs-bmc-v2";
+        reg = <0x24 0x1>, <0x30 0x1>, <0x3c 0x1>;
         interrupts = <8>;
-        kcs_chan = <3>;
-        kcs_addr = <0xCA2>;
+        slave-reg = <0xca2>;
         status = "okay";
     };
-- 
2.20.1