[PATCH v1 02/30] dt-bindings: mmc: tegra: Document OPP and voltage regulator properties

Dmitry Osipenko
2020-11-04T23:50:35Z

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