From: Haibo Chen <haibo.chen@xxxxxxx>
Add a new fsl,broken-auto-tuning binding for sdio devices. When sdio
device support sdio interrupt, need to use this property to disable
auto-tuning. Auto-tuning circuit is conflict with sdio interrupt.
Signed-off-by: Haibo Chen <haibo.chen@xxxxxxx>
---
Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.yaml | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.yaml b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.yaml
index b5baf439fbac..d7c8e5880473 100644
--- a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.yaml
+++ b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.yaml
@@ -93,6 +93,15 @@ properties:
tuning step can't find the proper delay window within limited tuning retries.
default: 0
+ fsl,broken-auto-tuning:
+ description: |
+ Recommend for SDIO cards that enables SDIO interrupt for SDR104 and SDR50 mode.
+ SDIO interrupt uses DAT[1] to signal the card's interrupt. Auto-tuning circuit
+ will detect this interrupt on DAT[1] when in 4Bit bus mode, and take it just
+ as normal data, wrongly adjust the delay cell. This property is used to disable
+ the auto-tuning function.
+ type: boolean
+
fsl,strobe-dll-delay-target:
$ref: /schemas/types.yaml#/definitions/uint32
description: |
--
2.17.1
