diff options
| author | Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> | 2022-02-06 14:58:05 +0100 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> | 2022-02-09 15:34:42 +0100 |
| commit | 42f94bb962cd1b15dc57c90aca7e48848ca6c6c3 (patch) | |
| tree | 8b861fdb4e4c2b67ad414e1c24aabf78465f6b06 /Documentation/devicetree/bindings/memory-controllers | |
| parent | e531932c7185b86eccb3688002730950d49eba1a (diff) | |
| download | linux-42f94bb962cd1b15dc57c90aca7e48848ca6c6c3.tar.bz2 | |
dt-bindings: memory: lpddr3: deprecate passing timings frequency as unit address
The timings node maximum frequency was passed as an unit address, which
is actually a workaround. Such workaround and unit address are not
needed at all, because the device memory node (parent) can contain
multiple timing nodes without unit addresses but with suffix used for
nodenames, e.g. timings-1.
LPDDR2 bindings already use such version, so unify the LPDDR3 with them.
Suggested-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220206135807.211767-7-krzysztof.kozlowski@canonical.com
Diffstat (limited to 'Documentation/devicetree/bindings/memory-controllers')
| -rw-r--r-- | Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr3-timings.yaml | 16 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr3.yaml | 12 |
2 files changed, 15 insertions, 13 deletions
diff --git a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr3-timings.yaml b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr3-timings.yaml index 98bc219e8a25..97c3e988af5f 100644 --- a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr3-timings.yaml +++ b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr3-timings.yaml @@ -17,6 +17,13 @@ properties: maxItems: 1 description: | Maximum DDR clock frequency for the speed-bin, in Hz. + Property is deprecated, use max-freq. + deprecated: true + + max-freq: + $ref: /schemas/types.yaml#/definitions/uint32 + description: | + Maximum DDR clock frequency for the speed-bin, in Hz. min-freq: $ref: /schemas/types.yaml#/definitions/uint32 @@ -117,19 +124,16 @@ properties: required: - compatible - min-freq - - reg + - max-freq additionalProperties: false examples: - | lpddr3 { - #address-cells = <1>; - #size-cells = <0>; - - timings@800000000 { + timings { compatible = "jedec,lpddr3-timings"; - reg = <800000000>; + max-freq = <800000000>; min-freq = <100000000>; tCKE = <3750>; tCKESR = <3750>; diff --git a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr3.yaml b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr3.yaml index 3bcba15098ea..c542f32c39fa 100644 --- a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr3.yaml +++ b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr3.yaml @@ -18,6 +18,7 @@ properties: '#address-cells': const: 1 + deprecated: true density: $ref: /schemas/types.yaml#/definitions/uint32 @@ -55,6 +56,7 @@ properties: '#size-cells': const: 0 + deprecated: true tCKE-min-tck: $ref: /schemas/types.yaml#/definitions/uint32 @@ -191,7 +193,7 @@ properties: cycles. patternProperties: - "^timings@[0-9a-f]+$": + "^timings((-[0-9])+|(@[0-9a-f]+))?$": $ref: jedec,lpddr3-timings.yaml description: | The lpddr3 node may have one or more child nodes with timings. @@ -201,10 +203,8 @@ patternProperties: required: - compatible - - '#address-cells' - density - io-width - - '#size-cells' additionalProperties: false @@ -214,8 +214,6 @@ examples: compatible = "samsung,K3QF2F20DB", "jedec,lpddr3"; density = <16384>; io-width = <32>; - #address-cells = <1>; - #size-cells = <0>; tCKE-min-tck = <2>; tCKESR-min-tck = <2>; @@ -239,9 +237,9 @@ examples: tXP-min-tck = <2>; tXSR-min-tck = <12>; - timings@800000000 { + timings { compatible = "jedec,lpddr3-timings"; - reg = <800000000>; + max-freq = <800000000>; min-freq = <100000000>; tCKE = <3750>; tCKESR = <3750>; |