From: Aapo Vienamo <avienamo@nvidia.com>
To: Ulf Hansson <ulf.hansson@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
Adrian Hunter <adrian.hunter@intel.com>,
Mikko Perttunen <mperttunen@nvidia.com>
Cc: <linux-mmc@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-tegra@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Aapo Vienamo <avienamo@nvidia.com>
Subject: [PATCH v2 02/10] dt-bindings: mmc: tegra: Add nvidia,only-1-8-v property
Date: Thu, 26 Jul 2018 15:19:12 +0300 [thread overview]
Message-ID: <1532607560-11253-3-git-send-email-avienamo@nvidia.com> (raw)
In-Reply-To: <1532607560-11253-1-git-send-email-avienamo@nvidia.com>
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 <avienamo@nvidia.com>
---
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
next prev parent reply other threads:[~2018-07-26 12:19 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-26 12:19 [PATCH v2 00/10] Tegra SDHCI enable 1.8 V signaling on Tegar210 and Tegra186 Aapo Vienamo
2018-07-26 12:19 ` [PATCH v2 01/10] dt-bindings: mmc: tegra: Add pad voltage control properties Aapo Vienamo
2018-07-30 23:22 ` Rob Herring
2018-07-26 12:19 ` Aapo Vienamo [this message]
2018-07-26 13:05 ` [PATCH v2 02/10] dt-bindings: mmc: tegra: Add nvidia,only-1-8-v property Stefan Agner
2018-07-27 8:05 ` Aapo Vienamo
2018-07-30 23:24 ` Rob Herring
2018-07-26 12:19 ` [PATCH v2 03/10] mmc: tegra: Reconfigure pad voltages during voltage switching Aapo Vienamo
2018-07-26 13:33 ` Stefan Agner
2018-07-27 8:44 ` Aapo Vienamo
2018-07-26 12:19 ` [PATCH v2 04/10] arm64: dts: Add Tegra210 sdmmc pinctrl voltage states Aapo Vienamo
2018-07-26 12:19 ` [PATCH v2 05/10] arm64: dts: Add Tegra186 " Aapo Vienamo
2018-07-26 12:19 ` [PATCH v2 06/10] arm64: dts: tegra210-p2180: Allow ldo2 to go down to 1.8 V Aapo Vienamo
2018-07-26 12:19 ` [PATCH v2 07/10] arm64: dts: tegra210-p2180: Correct sdmmc4 vqmmc-supply Aapo Vienamo
2018-07-26 12:19 ` [PATCH v2 08/10] arm64: dts: tegra210-p2597: Remove no-1-8-v from sdmmc1 Aapo Vienamo
2018-07-26 12:19 ` [PATCH v2 09/10] arm64: dts: tegra210: Add nvidia,only-1-8-v to sdmmc4 Aapo Vienamo
2018-07-26 12:19 ` [PATCH v2 10/10] arm64: dts: tegra186: " Aapo Vienamo
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