[PATCH v1 02/30] dt-bindings: mmc: tegra: Document OPP and voltage regulator properties
From: Dmitry Osipenko <digetx@gmail.com>
Date: 2020-11-04 23:50:15
Also in:
dri-devel, linux-media, linux-mmc, linux-pwm, linux-samsung-soc, linux-tegra, linux-usb, 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
Document new DVFS OPP table and voltage regulator properties of the SDHCI controller. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> --- .../devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt b/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt
index 96c0b1440c9c..1beb0416ae5f 100644
--- a/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt
+++ b/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt@@ -31,6 +31,16 @@ Required properties: Optional properties: - power-gpios : Specify GPIOs for power control +- operating-points-v2: See ../bindings/opp/opp.txt for details. +- core-supply: Phandle of voltage regulator of the SoC "core" power domain. + +For each opp entry in 'operating-points-v2' table: +- opp-supported-hw: One bitfield indicating: + On Tegra20: SoC process ID mask + On Tegra30+: SoC speedo ID mask + + A bitwise AND is performed against the value and if any bit + matches, the OPP gets enabled. Example:
@@ -45,6 +55,8 @@ sdhci@c8000200 { wp-gpios = <&gpio 57 0>; /* gpio PH1 */ power-gpios = <&gpio 155 0>; /* gpio PT3 */ bus-width = <8>; + operating-points-v2 = <&dvfs_opp_table>; + core-supply = <&vdd_core>; }; Optional properties for Tegra210, Tegra186 and Tegra194:
--
2.27.0