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| author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2018-09-01 11:12:30 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2018-09-26 17:48:02 +0300 |
| commit | dc741b7bde05a7d1e4382c7c633667fbda0f27cc (patch) | |
| tree | 4684385a1cf7f93149a467d9f191b9f8721eae59 /arch/arm/boot | |
| parent | 44925e4f6e35b6bb2a602bfd7546965848164a00 (diff) | |
| download | linux-dc741b7bde05a7d1e4382c7c633667fbda0f27cc.tar.xz | |
ARM: tegra: colibri_t30: enable emmc ddr52 mode
Add mmc-ddr-1_8v property enabling eMMC DDR52 mode.
root@colibri-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@colibri-t30:~# hdparm -t /dev/mmcblk1
/dev/mmcblk1:
Timing buffered disk reads: 222 MB in 3.00 seconds = 73.92 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')
| -rw-r--r-- | arch/arm/boot/dts/tegra30-colibri.dtsi | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/tegra30-colibri.dtsi b/arch/arm/boot/dts/tegra30-colibri.dtsi index c5cb05f78604..95b6444a6f05 100644 --- a/arch/arm/boot/dts/tegra30-colibri.dtsi +++ b/arch/arm/boot/dts/tegra30-colibri.dtsi @@ -933,6 +933,7 @@ non-removable; vmmc-supply = <®_module_3v3>; /* VCC */ vqmmc-supply = <®_1v8_vio>; /* VCCQ */ + mmc-ddr-1_8v; }; /* EHCI instance 1: USB2_DP/N -> AX88772B */ |