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dt-bindings: mmc: sdhci-am654: Add documentation for input tap delay

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Add documentation for input tap delay bindings.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Link: https://lore.kernel.org/r/20200923105206.7988-3-faiz_abbas@ti.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Faiz Abbas 2020-09-23 16:22:02 +05:30 committed by Ulf Hansson
parent 407d0c2cdd
commit b140954c5f
1 changed files with 43 additions and 0 deletions
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43
Documentation/devicetree/bindings/mmc/sdhci-am654.yaml
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@ -114,6 +114,46 @@ properties:
minimum: 0
maximum: 0xf
# PHY input tap delays:
# Used to delay the data valid window and align it to the sampling clock for
# modes that don't support tuning
ti,itap-del-sel-legacy:
description: Input tap delay for SD/MMC legacy timing
$ref: "/schemas/types.yaml#/definitions/uint32"
minimum: 0
maximum: 0x1f
ti,itap-del-sel-mmc-hs:
description: Input tap delay for MMC high speed timing
$ref: "/schemas/types.yaml#/definitions/uint32"
minimum: 0
maximum: 0x1f
ti,itap-del-sel-sd-hs:
description: Input tap delay for SD high speed timing
$ref: "/schemas/types.yaml#/definitions/uint32"
minimum: 0
maximum: 0x1f
ti,itap-del-sel-sdr12:
description: Input tap delay for SD UHS SDR12 timing
$ref: "/schemas/types.yaml#/definitions/uint32"
minimum: 0
maximum: 0x1f
ti,itap-del-sel-sdr25:
description: Input tap delay for SD UHS SDR25 timing
$ref: "/schemas/types.yaml#/definitions/uint32"
minimum: 0
maximum: 0x1f
ti,itap-del-sel-ddr52:
description: Input tap delay for MMC DDR52 timing
$ref: "/schemas/types.yaml#/definitions/uint32"
minimum: 0
maximum: 0x1f
ti,trm-icp:
description: DLL trim select
$ref: "/schemas/types.yaml#/definitions/uint32"
@ -170,6 +210,9 @@ examples:
ti,otap-del-sel-ddr52 = <0x5>;
ti,otap-del-sel-hs200 = <0x5>;
ti,otap-del-sel-hs400 = <0x0>;
ti,itap-del-sel-legacy = <0x10>;
ti,itap-del-sel-mmc-hs = <0xa>;
ti,itap-del-sel-ddr52 = <0x3>;
ti,trm-icp = <0x8>;
};
};