From: Luke Wang <redacted>

During system resume, the following errors occurred:

  [  430.638625] mmc1: error -84 writing Cache Enable bit
  [  430.643618] mmc1: error -84 doing runtime resume

For eMMC and SD, there are two tuning pass windows and the gap between
those two windows may only have one cell. If tuning step > 1, the gap may
just be skipped and host assumes those two windows as a continuous
windows. This will cause a wrong delay cell near the gap to be selected.

Set the tuning step to 1 to avoid selecting the wrong delay cell.

For SDIO, the gap is sufficiently large, so the default tuning step does
not cause this issue.

Fixes: e37907bd8294 ("arm64: dts: freescale: add i.MX93 11x11 EVK basic support")
Signed-off-by: Luke Wang <redacted>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
---
 arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts b/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
index 8dd5340e8141..5138bdec2402 100644
--- a/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts

@@ -631,6 +631,7 @@ &usdhc1 {
 	pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
 	bus-width = <8>;
 	non-removable;
+	fsl,tuning-step = <1>;
 	status = "okay";
 };
 

@@ -643,6 +644,7 @@ &usdhc2 {
 	cd-gpios = <&gpio3 00 GPIO_ACTIVE_LOW>;
 	vmmc-supply = <&reg_usdhc2_vmmc>;
 	bus-width = <4>;
+	fsl,tuning-step = <1>;
 	status = "okay";
 	no-mmc;
 };

-- 
2.34.1