[PATCH v2 02/10] dt-bindings: mmc: tegra: Add nvidia,only-1-8-v property
From: Aapo Vienamo <hidden>
Date: 2018-07-26 12:19:38
Also in:
linux-mmc, linux-tegra, lkml
Subsystem:
multimedia card (mmc), secure digital (sd) and sdio subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Ulf Hansson, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Add a property to mark controllers which operate at a 1.8 V fixed I/O voltage. This feature of the hardware needs to be signaled this way because it cannot be probed at runtime or reliably derived from other properties. Signed-off-by: Aapo Vienamo <redacted> --- Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt b/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt
index 90c214d..95010cf 100644
--- a/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt
+++ b/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt@@ -45,6 +45,8 @@ Optional properties for Tegra210 and Tegra186: for controllers supporting multiple voltage levels. The order of names should correspond to the pin configuration states in pinctrl-0 and pinctrl-1. +- nvidia,only-1-8-v : The presence of this property indicates that the + controller operates at a 1.8 V fixed I/O voltage. Example: sdhci@700b0000 {
--
2.7.4