[PATCH 3/3] ARM: dts: imx7s: set the tuning start tap for USDHC

[BOUGH CHEN <haibo.chen@nxp.com>]

For USDHC standard tuning method, i.MX7D require that the start tap
point must be larger than 10, otherwise the internal IC logic can't
work normal. So this patch set the tuning start tap as 20 according
to IC suggestion.

Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
---
 arch/arm/boot/dts/imx7s.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
index 106711d2c01b..108652915f99 100644
--- a/arch/arm/boot/dts/imx7s.dtsi
+++ b/arch/arm/boot/dts/imx7s.dtsi
@@ -1126,6 +1126,7 @@
 					<&clks IMX7D_USDHC1_ROOT_CLK>;
 				clock-names = "ipg", "ahb", "per";
 				bus-width = <4>;
+				fsl,tuning-start-tap = <20>;
 				status = "disabled";
 			};
 
@@ -1138,6 +1139,7 @@
 					<&clks IMX7D_USDHC2_ROOT_CLK>;
 				clock-names = "ipg", "ahb", "per";
 				bus-width = <4>;
+				fsl,tuning-start-tap = <20>;
 				status = "disabled";
 			};
 
@@ -1150,6 +1152,7 @@
 					<&clks IMX7D_USDHC3_ROOT_CLK>;
 				clock-names = "ipg", "ahb", "per";
 				bus-width = <4>;
+				fsl,tuning-start-tap = <20>;
 				status = "disabled";
 			};
 
-- 
2.17.1