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

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Message-Id: <20201104234427.26477-3-digetx@gmail.com>
Date:   Thu,  5 Nov 2020 02:43:59 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Alan Stern <stern@...land.harvard.edu>,
        Peter Chen <Peter.Chen@....com>,
        Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Lee Jones <lee.jones@...aro.org>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Peter Geis <pgwipeout@...il.com>,
        Nicolas Chauvet <kwizart@...il.com>
Cc:     linux-samsung-soc@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-usb@...r.kernel.org, linux-pwm@...r.kernel.org,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-media@...r.kernel.org, linux-tegra@...r.kernel.org
Subject: [PATCH v1 02/30] dt-bindings: mmc: tegra: Document OPP and voltage regulator properties

Document new DVFS OPP table and voltage regulator properties of the
SDHCI controller.

Signed-off-by: Dmitry Osipenko <digetx@...il.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@...00200 {
 	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