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arm64: dts: hikey: Enable HS200 mode on eMMC 

According to the hi6220 datasheet, the MMC controller is JEDEC eMMC 4.5
compliant, in addition to supporting a clock of up to 150MHz. The Hikey
schematic also indicates the device utilizes 1.8v signaling. Define these
parameters in the device tree to enable HS200 mode.

Signed-off-by: Ryan Grachek <ryan@edited.us>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
This commit is contained in:
oscardagrach 2018-01-17 14:35:30 -06:00 committed by Wei Xu
parent 17f21343d7
commit abd7d0972a
1 changed files with 2 additions and 0 deletions
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2
arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
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@ -299,7 +299,9 @@ gpio15: gpio@f702b000 {
/* GPIO blocks 16 thru 19 do not appear to be routed to pins */
dwmmc_0: dwmmc0@f723d000 {
max-frequency = <150000000>;
cap-mmc-highspeed;
mmc-hs200-1_8v;
non-removable;
bus-width = <0x8>;
vmmc-supply = <&ldo19>;