linux-kernel - [PATCH 3/6] dt-bindings: memory: lpddr3: adjust IO width to spec

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Message-Id: <20220201114749.88500-3-krzysztof.kozlowski@canonical.com>
Date:   Tue,  1 Feb 2022 12:47:46 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Rob Herring <robh+dt@...nel.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Dmitry Osipenko <digetx@...il.com>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org
Subject: [PATCH 3/6] dt-bindings: memory: lpddr3: adjust IO width to spec

According to JEDEC Standard No. 209-3 (table 3.4.1 "Mode Register
Assignment and Definition in LPDDR3 SDRAM"), the LPDDR3 supports only
16- and 32-bit IO width.  Drop the unsupported others.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
---
 .../bindings/memory-controllers/ddr/jedec,lpddr3.yaml           | 2 --
 1 file changed, 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr3.yaml b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr3.yaml
index c8577186324a..0c8353c11767 100644
--- a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr3.yaml
+++ b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr3.yaml
@@ -34,10 +34,8 @@ properties:
     description: |
       IO bus width in bits of SDRAM chip.
     enum:
-      - 64
       - 32
       - 16
-      - 8
 
   manufacturer-id:
     $ref: /schemas/types.yaml#/definitions/uint32
-- 
2.32.0