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| author |   Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2018-08-31 18:38:05 +0200 |
|---|---|---|
| committer |   Thierry Reding <treding@nvidia.com> | 2018-09-26 16:45:46 +0200 |
| commit | 200be313fdc9bb9810bba3450698c1bf923b814f (patch) | |
| tree | 07729994969d94c29df5e61954faa79c4f430ea5 /arch/arm/boot/dts/tegra30-apalis.dtsi | |
| parent | ARM: tegra: apalis_t30: add proper emmc vmmc and vqmmc supplies (diff) | |
| download | linux-dev-200be313fdc9bb9810bba3450698c1bf923b814f.tar.xz linux-dev-200be313fdc9bb9810bba3450698c1bf923b814f.zip | |
ARM: tegra: apalis_t30: enable emmc ddr52 mode
Add mmc-ddr-1_8v property enabling eMMC DDR52 mode.
root@apalis-t30:~# cat /sys/kernel/debug/mmc1/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-t30:~# hdparm -t /dev/mmcblk1
/dev/mmcblk1:
Timing buffered disk reads: 232 MB in 3.01 seconds = 77.10 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/tegra30-apalis.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/tegra30-apalis.dtsi | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/tegra30-apalis.dtsi b/arch/arm/boot/dts/tegra30-apalis.dtsi index 2e2cdd454fe3..6d6f17422478 100644 --- a/arch/arm/boot/dts/tegra30-apalis.dtsi +++ b/arch/arm/boot/dts/tegra30-apalis.dtsi @@ -1094,6 +1094,7 @@ non-removable; vmmc-supply = <®_module_3v3>; /* VCC */ vqmmc-supply = <®_1v8_vio>; /* VCCQ */ + mmc-ddr-1_8v; }; clocks { |