diff mbox series

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

Message ID 20201104234427.26477-3-digetx@gmail.com (mailing list archive)
State Not Applicable
Headers show
Series Introduce core voltage scaling for NVIDIA Tegra20/30 SoCs | expand

Commit Message

Dmitry Osipenko Nov. 4, 2020, 11:43 p.m. UTC
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(+)

Comments

Rob Herring Nov. 9, 2020, 6:58 p.m. UTC | #1
On Thu, 05 Nov 2020 02:43:59 +0300, Dmitry Osipenko wrote:
> 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(+)
> 

Reviewed-by: Rob Herring <robh@kernel.org>
diff mbox series

Patch

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: