Re: [PATCH v2 1/3] dt-bindings: mmc: add no-mmc-hs400 flag
From: Ulf Hansson <hidden>
Date: 2021-05-24 14:10:55
Also in:
linux-devicetree, linux-mmc
On Mon, 10 May 2021 at 21:04, Lucas Stach [off-list ref] wrote:
From: Lucas Stach <dev@lynxeye.de> HS400 requires a data strobe line in addition to the usual MMC signal lines. If a board design neglects to wire up this signal, HS400 mode is not available, even if both the controller and the eMMC are claiming to support this mode. Add a DT flag to allow boards to disable the HS400 support in this case. Signed-off-by: Lucas Stach <dev@lynxeye.de> Acked-by: Rob Herring <robh@kernel.org>
Applied for next, thanks! Kind regards Uffe
quoted hunk ↗ jump to hunk
--- Documentation/devicetree/bindings/mmc/mmc-controller.yaml | 5 +++++ 1 file changed, 5 insertions(+)diff --git a/Documentation/devicetree/bindings/mmc/mmc-controller.yaml b/Documentation/devicetree/bindings/mmc/mmc-controller.yaml index e141330c1114..ac80d09df3a9 100644 --- a/Documentation/devicetree/bindings/mmc/mmc-controller.yaml +++ b/Documentation/devicetree/bindings/mmc/mmc-controller.yaml@@ -220,6 +220,11 @@ properties: description: eMMC HS400 enhanced strobe mode is supported + no-mmc-hs400: + $ref: /schemas/types.yaml#/definitions/flag + description: + All eMMC HS400 modes are not supported. + dsr: description: Value the card Driver Stage Register (DSR) should be programmed --2.31.1
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