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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 v4 3/7] dt-bindings: memory: lpddr2: Add revision-id properties
Date: Wed,  6 Oct 2021 02:00:05 +0300	[thread overview]
Message-ID: <20211005230009.3635-4-digetx@gmail.com> (raw)
In-Reply-To: <20211005230009.3635-1-digetx@gmail.com>

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         | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml
index d99ccad54938..01efb43c3425 100644
--- a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml
+++ b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml
@@ -24,6 +24,16 @@ properties:
           - enum:
               - jedec,lpddr2-nvm
 
+  revision-id1:
+    maximum: 255
+    description: |
+      Revision 1 value of SDRAM chip. Obtained from device datasheet.
+
+  revision-id2:
+    maximum: 255
+    description: |
+      Revision 2 value of SDRAM chip. Obtained from device datasheet.
+
   density:
     description: |
       Density in megabits of SDRAM chip. Obtained from device datasheet.
@@ -138,6 +148,8 @@ 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


  parent reply	other threads:[~2021-10-05 23:01 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-05 23:00 [PATCH v4 0/7] tegra20-emc: Identify memory chip by LPDDR configuration Dmitry Osipenko
2021-10-05 23:00 ` [PATCH v4 1/7] dt-bindings: Relocate DDR bindings Dmitry Osipenko
2021-10-05 23:00 ` [PATCH v4 2/7] dt-bindings: memory: lpddr2: Convert to schema Dmitry Osipenko
2021-10-06 10:57   ` Krzysztof Kozlowski
2021-10-06 15:41     ` Dmitry Osipenko
2021-10-06 15:44       ` Dmitry Osipenko
2021-10-06 17:23         ` Krzysztof Kozlowski
2021-10-06 17:31           ` Dmitry Osipenko
2021-10-06 17:21       ` Krzysztof Kozlowski
2021-10-05 23:00 ` Dmitry Osipenko [this message]
2021-10-06 10:59   ` [PATCH v4 3/7] dt-bindings: memory: lpddr2: Add revision-id properties Krzysztof Kozlowski
2021-10-06 15:47     ` Dmitry Osipenko
2021-10-06 16:11       ` Dmitry Osipenko
2021-10-05 23:00 ` [PATCH v4 4/7] dt-bindings: memory: lpddr2: Document Elpida B8132B2PB-6D-F Dmitry Osipenko
2021-10-05 23:00 ` [PATCH v4 5/7] dt-bindings: memory: tegra20: emc: Document new LPDDR2 sub-node Dmitry Osipenko
2021-10-05 23:00 ` [PATCH v4 6/7] memory: Add LPDDR2 configuration helpers Dmitry Osipenko
2021-10-05 23:00 ` [PATCH v4 7/7] memory: tegra20-emc: Support matching timings by LPDDR2 configuration Dmitry Osipenko

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