Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Dmitry Osipenko <digetx@gmail.com>
To:     Thierry Reding <thierry.reding@gmail.com>,
        Jonathan Hunter <jonathanh@nvidia.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
        Rob Herring <robh+dt@kernel.org>
Cc:     devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-tegra@vger.kernel.org
Subject: [PATCH v5 3/9] dt-bindings: memory: lpddr2: Add revision-id properties
Date:   Thu,  7 Oct 2021 01:46:53 +0300
Message-Id: <20211006224659.21434-4-digetx@gmail.com>
In-Reply-To: <20211006224659.21434-1-digetx@gmail.com>
References: <20211006224659.21434-1-digetx@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Add optional revision-id standard LPDDR2 properties which will help to
identify memory chip.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 .../memory-controllers/ddr/jedec,lpddr2.yaml       | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml
index f931fe910ce5..fe573750577e 100644
--- a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml
+++ b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml
@@ -24,6 +24,18 @@ properties:
           - enum:
               - jedec,lpddr2-nvm
 
+  revision-id1:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maximum: 255
+    description: |
+      Revision 1 value of SDRAM chip. Obtained from device datasheet.
+
+  revision-id2:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maximum: 255
+    description: |
+      Revision 2 value of SDRAM chip. Obtained from device datasheet.
+
   density:
     $ref: /schemas/types.yaml#/definitions/uint32
     description: |
@@ -151,6 +163,8 @@ examples:
         compatible = "elpida,ECB240ABACN", "jedec,lpddr2-s4";
         density = <2048>;
         io-width = <32>;
+        revision-id1 = <1>;
+        revision-id2 = <0>;
 
         tRPab-min-tck = <3>;
         tRCD-min-tck = <3>;
-- 
2.32.0