linux-kernel - [PATCH 2/7] dt-bindings: can: mcan: Add ECC functionality to message ram

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Message-Id: <20221021095833.62406-3-vivek.2311@samsung.com>
Date:   Fri, 21 Oct 2022 15:28:28 +0530
From:   Vivek Yadav <vivek.2311@...sung.com>
To:     rcsekar@...sung.com, wg@...ndegger.com, mkl@...gutronix.de,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, pankaj.dubey@...sung.com,
        ravi.patel@...sung.com, alim.akhtar@...sung.com
Cc:     linux-can@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Vivek Yadav <vivek.2311@...sung.com>
Subject: [PATCH 2/7] dt-bindings: can: mcan: Add ECC functionality to
 message ram

Whenever the data is transferred or stored on message ram, there are
inherent risks of it being lost or corruption known as single-bit errors.

ECC constantly scans data as it is processed to the message ram, using a
method known as parity checking and raise the error signals for corruption.

Add error correction code config property to enable/disable the
error correction code (ECC) functionality for Message RAM used to create
valid ECC checksums.

Signed-off-by: Chandrasekar R <rcsekar@...sung.com>
Signed-off-by: Vivek Yadav <vivek.2311@...sung.com>
---
 Documentation/devicetree/bindings/net/can/bosch,m_can.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml b/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
index 26aa0830eea1..0ba3691863d7 100644
--- a/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
+++ b/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
@@ -50,6 +50,10 @@ properties:
       - const: hclk
       - const: cclk
 
+  mram-ecc-cfg:
+    items:
+      - description: M_CAN ecc registers map with configuration register offset
+
   bosch,mram-cfg:
     description: |
       Message RAM configuration data.
-- 
2.17.1