diff options
Diffstat (limited to 'Documentation/devicetree/bindings/mmc')
| -rw-r--r-- | Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.yaml | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.yaml b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.yaml index f9d095762a3f..a548bbda1e8e 100644 --- a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.yaml +++ b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.yaml @@ -132,6 +132,16 @@ properties: - const: default - const: sleep + fsl,sdio-async-interrupt-enabled: + description: | + Recommend for SDIO cards that enables SDIO async interrupt for SDR104 and SDR50 + operating modes. SDIO async interrupt uses DAT[1] to signal the card's interrupt. + uSDHC tuning mechanism must use DAT[0] and CMD signals to avoid a possible + conflict and incorrect delay line calculated by the uSDHC auto tuning mechanism. + Enabling this device tree property is only recommended for layouts that are + matching the SD interface length. + type: boolean + required: - compatible - reg |