diff options
| author | Aapo Vienamo <avienamo@nvidia.com> | 2018-08-10 20:08:34 +0200 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2018-08-27 12:27:25 +0200 |
| commit | 41cc3771c93e7b08520e80c1673ed3183e7cfa2a (patch) | |
| tree | fd75aca71469db8ec5daa8956e6d3b0a1703333f /arch/arm64/boot/dts | |
| parent | arm64: dts: Add Tegra186 sdmmc pinctrl voltage states (diff) | |
| download | linux-41cc3771c93e7b08520e80c1673ed3183e7cfa2a.tar.xz linux-41cc3771c93e7b08520e80c1673ed3183e7cfa2a.zip | |
arm64: dts: tegra210-p2180: Allow ldo2 to go down to 1.8 V
Set regulator-min-microvolt property of ldo2 to 1.8 V in
tegra210-p2180.dtsi. ldo2 is used by the sdmmc1 SDHCI controller and its
voltage needs to be adjusted down to 1.8 V to support faster signaling
modes. It appears that the comment about the SDHCI driver requesting
invalid voltages no longer applies.
Signed-off-by: Aapo Vienamo <avienamo@nvidia.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'arch/arm64/boot/dts')
| -rw-r--r-- | arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi | 11 |
1 files changed, 1 insertions, 10 deletions
diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi b/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi index 212e6634c9ba..84961017abd8 100644 --- a/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi @@ -178,16 +178,7 @@ vddio_sdmmc: ldo2 { regulator-name = "VDDIO_SDMMC"; - /* - * Technically this supply should have - * a supported range from 1.8 - 3.3 V. - * However, that would cause the SDHCI - * driver to request 2.7 V upon access - * and that in turn will cause traffic - * to be broken. Leave it at 3.3 V for - * now. - */ - regulator-min-microvolt = <3300000>; + regulator-min-microvolt = <1800000>; regulator-max-microvolt = <3300000>; regulator-always-on; regulator-boot-on; |