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| author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2018-09-01 16:04:55 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2018-09-26 17:50:37 +0300 |
| commit | 8be6e49a653ca79dcae1125238f78db590d86622 (patch) | |
| tree | 253839cea04b6282bebca6434049d8ca56df439a /arch/arm/boot/dts/tegra124-apalis.dtsi | |
| parent | fca051b02a57c6cf9f58e83140aaf00e19c74e92 (diff) | |
| download | linux-8be6e49a653ca79dcae1125238f78db590d86622.tar.xz | |
ARM: tegra: apalis-tk1: enable emmc ddr52 mode
Add mmc-ddr-1_8v property enabling eMMC DDR52 mode.
root@apalis-tk1-mainline:~# cat /sys/kernel/debug/mmc2/ios
clock: 52000000 Hz
actual clock: 52000000 Hz
vdd: 21 (3.3 ~ 3.4 V)
bus mode: 2 (push-pull)
chip select: 0 (don't care)
power mode: 2 (on)
bus width: 3 (8 bits)
timing spec: 8 (mmc DDR52)
signal voltage: 1 (1.80 V)
driver type: 0 (driver type B)
root@apalis-tk1-mainline:~# hdparm -t /dev/mmcblk2
/dev/mmcblk2:
Timing buffered disk reads: 256 MB in 3.02 seconds = 84.83 MB/sec
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'arch/arm/boot/dts/tegra124-apalis.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/tegra124-apalis.dtsi | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/tegra124-apalis.dtsi b/arch/arm/boot/dts/tegra124-apalis.dtsi index ba6fc2e51b2d..f76580f6cc80 100644 --- a/arch/arm/boot/dts/tegra124-apalis.dtsi +++ b/arch/arm/boot/dts/tegra124-apalis.dtsi @@ -1948,6 +1948,7 @@ non-removable; vmmc-supply = <®_module_3v3>; /* VCC */ vqmmc-supply = <®_1v8_vddio>; /* VCCQ */ + mmc-ddr-1_8v; }; /* CPU DFLL clock */ |