arm64: dts: hikey: Enable HS200 mode on eMMC
Subsystems (2)
PATCH 1/1 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 <[email protected]>
--- arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts | 2 ++ 1 file changed, 2 insertions(+)
arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts +2 -0
@@ -299,7 +299,9 @@ /* GPIO blocks 16 thru 19 do not appear to be routed to pins */ dwmmc_0: dwmmc0 at f723d000 { + max-frequency = <150000000>; cap-mmc-highspeed; + mmc-hs200-1_8v; non-removable; bus-width = <0x8>; vmmc-supply = <&ldo19>;
Signature · 1 line
2.11.0
Hi Ryan,
Quoted 7 lines · oscardagrach
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 <[email protected]>---
Applied into hisilicon dt tree.
Thanks!
BR,
Wei
Quoted 18 lines
arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts | 2 ++ 1 file changed, 2 insertions(+)arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts +2
-0@@ -299,7 +299,9 @@ /* GPIO blocks 16 thru 19 do not appear to be routed to pins */ dwmmc_0: dwmmc0 at f723d000 { + max-frequency = <150000000>; cap-mmc-highspeed; + mmc-hs200-1_8v; non-removable; bus-width = <0x8>; vmmc-supply = <&ldo19>;