diff options
Diffstat (limited to 'Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt index f707b8bee304..0da89a7a6097 100644 --- a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt +++ b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt @@ -19,6 +19,7 @@ Required properties: "fsl,imx7d-usdhc" "fsl,imx7ulp-usdhc" "fsl,imx8qxp-usdhc" + "fsl,imx8mm-usdhc" Optional properties: - fsl,wp-controller : Indicate to use controller internal write protection @@ -38,6 +39,19 @@ Optional properties: This property allows user to change the tuning step to more than one delay cells which is useful for some special boards or cards when the default tuning step can't find the proper delay window within limited tuning retries. +- fsl,strobe-dll-delay-target: Specify the strobe dll control slave delay target. + This delay target programming host controller loopback read clock, and this + property allows user to change the delay target for the strobe input read clock. + If not use this property, driver default set the delay target to value 7. + Only eMMC HS400 mode need to take care of this property. +- auto-cmd23-broken: disable the ACMD23 function of USDHC. + This is required for eMMC on imx6qpdl/imx6sx/imx7d when it use ADMA mode. Because + for these SoC, it do not support the ACMD23 completely, only take the 16 bit block + count from the 0x4 register (BLK_ATT) as argument for the ACMD23, the upper 16 bit + of the CMD23's argument is ignored. This will impact the reliable write operation + and the RPMB block write operation, because these operations need to set the bit 31 + of the CMD23's argument. SDMA mode will default disable the ACMD23 mode. SD card do + not has this limitation on these SoCs. Examples: |