From: Krzysztof Kozlowski <krzk@kernel.org>
To: Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Kukjin Kim <kgene@kernel.org>,
Krzysztof Kozlowski <krzk@kernel.org>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Marek Szyprowski <m.szyprowski@samsung.com>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
Chanwoo Choi <cw00.choi@samsung.com>
Subject: [RFT 4/4] ARM: dts: exynos: Add LDO28 regulator on Exynos5422 Odroid boards
Date: Mon, 6 Aug 2018 18:09:33 +0200 [thread overview]
Message-ID: <20180806160933.6578-4-krzk@kernel.org> (raw)
In-Reply-To: <20180806160933.6578-1-krzk@kernel.org>
The LDO28 is used only on Odroid XU3 for Display Port. Define it so DTS
will describe entire hardware.
Depending on bootloader behavior this might affect the Display Port
because none of drivers are enabling it. By default it is off in S2MPS11
PMIC reset values. However it could be enabled by bootloader so in such
case kernel will later disable it as unused regulator.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
---
Not tested on Odroid XU3 with Display Port.
---
arch/arm/boot/dts/exynos5422-odroid-core.dtsi | 7 +++++++
arch/arm/boot/dts/exynos5422-odroidxu3.dts | 6 ++++++
2 files changed, 13 insertions(+)
diff --git a/arch/arm/boot/dts/exynos5422-odroid-core.dtsi b/arch/arm/boot/dts/exynos5422-odroid-core.dtsi
index b0dc9cc81b94..178e1064cfc7 100644
--- a/arch/arm/boot/dts/exynos5422-odroid-core.dtsi
+++ b/arch/arm/boot/dts/exynos5422-odroid-core.dtsi
@@ -331,6 +331,13 @@
regulator-always-on;
};
+ ldo28_reg: LDO28 {
+ /* Used on XU3 */
+ regulator-name = "vdd_ldo26";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3950000>;
+ };
+
ldo29_reg: LDO29 {
/* Unused */
regulator-name = "vdd_ldo29";
diff --git a/arch/arm/boot/dts/exynos5422-odroidxu3.dts b/arch/arm/boot/dts/exynos5422-odroidxu3.dts
index 0322f281912c..db0bc17a667b 100644
--- a/arch/arm/boot/dts/exynos5422-odroidxu3.dts
+++ b/arch/arm/boot/dts/exynos5422-odroidxu3.dts
@@ -49,6 +49,12 @@
};
};
+&ldo28_reg {
+ regulator-name = "dp_p3v3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+};
+
&pwm {
/*
* PWM 0 -- fan
--
2.14.1
next prev parent reply other threads:[~2018-08-06 16:09 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-06 16:09 [PATCH 1/4] ARM: dts: exynos: Add missing used PMIC regulators on Exynos5422 Odroid boards Krzysztof Kozlowski
2018-08-06 16:09 ` [PATCH 2/4] ARM: dts: exynos: Add unused " Krzysztof Kozlowski
2018-08-06 16:09 ` [PATCH 3/4] ARM: dts: exynos: Disable " Krzysztof Kozlowski
2018-08-06 16:09 ` Krzysztof Kozlowski [this message]
2018-08-07 10:59 ` [RFT 4/4] ARM: dts: exynos: Add LDO28 regulator " Marek Szyprowski
2018-08-11 6:39 ` [PATCH 1/4] ARM: dts: exynos: Add missing used PMIC regulators " Anand Moon
2018-08-12 13:25 ` Krzysztof Kozlowski
2018-08-13 6:37 ` Anand Moon
2018-08-13 7:13 ` Krzysztof Kozlowski
2018-08-13 8:03 ` Anand Moon
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