Currently the enabled MMC controllers on Pine H64 do not have bus-width
set, which make them fall back to 1-bit mode and become quite slow.

Fix this by add the corresponding bus-width properties.

Same commit is there in mailing-list, but yet to merge,
commit fb8971bea0910a3172cd8ce75ccc01b50104ebf7
Author: Icenowy Zheng <icen...@aosc.io>
Date:   Thu Jul 26 12:41:27 2018 +0800

    arm64: allwinner: dts: h6: fix Pine H64 MMC bus width

Cc: Icenowy Zheng <icen...@aosc.io>
Signed-off-by: Jagan Teki <ja...@amarulasolutions.com>
---
 arch/arm/dts/sun50i-h6-pine-h64.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/dts/sun50i-h6-pine-h64.dts 
b/arch/arm/dts/sun50i-h6-pine-h64.dts
index ceffc40810..48daec7f78 100644
--- a/arch/arm/dts/sun50i-h6-pine-h64.dts
+++ b/arch/arm/dts/sun50i-h6-pine-h64.dts
@@ -46,6 +46,7 @@
        pinctrl-0 = <&mmc0_pins>;
        vmmc-supply = <&reg_cldo1>;
        cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>;
+       bus-width = <4>;
        status = "okay";
 };
 
@@ -56,6 +57,7 @@
        vqmmc-supply = <&reg_bldo2>;
        non-removable;
        cap-mmc-hw-reset;
+       bus-width = <8>;
        status = "okay";
 };
 
-- 
2.18.0.321.gffc6fa0e3

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