diff options
| author |   Lukasz Luba <l.luba@partner.samsung.com> | 2019-09-19 11:26:41 +0200 |
|---|---|---|
| committer |   Krzysztof Kozlowski <krzk@kernel.org> | 2019-10-01 20:29:02 +0200 |
| commit | 296523d933060cad754626c751dc20f64dba7d01 (patch) | |
| tree | da7655ae9103735e9b2334ec7631d9bd55bbc64a /Documentation/devicetree/bindings/ddr | |
| parent | ARM: dts: exynos: Add DMC device to Exynos5422 and Odroid XU3-family boards (diff) | |
| download | linux-dev-296523d933060cad754626c751dc20f64dba7d01.tar.xz linux-dev-296523d933060cad754626c751dc20f64dba7d01.zip | |
dt-bindings: ddr: Add bindings for Samsung LPDDR3 memories
Add compatible for Samsung k3qf2f20db LPDDR3 memory bindings, based on
at25.txt compatible section. Introduce minor fixes in the old
documentation.
Suggested-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Lukasz Luba <l.luba@partner.samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/ddr')
| -rw-r--r-- | Documentation/devicetree/bindings/ddr/lpddr3.txt | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/Documentation/devicetree/bindings/ddr/lpddr3.txt b/Documentation/devicetree/bindings/ddr/lpddr3.txt index 3b2485b84b3f..a0eda35a86ee 100644 --- a/Documentation/devicetree/bindings/ddr/lpddr3.txt +++ b/Documentation/devicetree/bindings/ddr/lpddr3.txt @@ -1,7 +1,10 @@ * LPDDR3 SDRAM memories compliant to JEDEC JESD209-3C Required properties: -- compatible : Should be - "jedec,lpddr3" +- compatible : Should be "<vendor>,<type>", and generic value "jedec,lpddr3". + Example "<vendor>,<type>" values: + "samsung,K3QF2F20DB" + - density : <u32> representing density in Mb (Mega bits) - io-width : <u32> representing bus width. Possible values are 8, 16, 32, 64 - #address-cells: Must be set to 1 @@ -43,7 +46,7 @@ Child nodes: Example: samsung_K3QF2F20DB: lpddr3 { - compatible = "Samsung,K3QF2F20DB", "jedec,lpddr3"; + compatible = "samsung,K3QF2F20DB", "jedec,lpddr3"; density = <16384>; io-width = <32>; #address-cells = <1>; @@ -73,7 +76,8 @@ samsung_K3QF2F20DB: lpddr3 { timings_samsung_K3QF2F20DB_800mhz: lpddr3-timings@800000000 { compatible = "jedec,lpddr3-timings"; - reg = <800000000>; /* workaround: it shows max-freq */ + /* workaround: 'reg' shows max-freq */ + reg = <800000000>; min-freq = <100000000>; tRFC = <65000>; tRRD = <6000>; |