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[73.37.219.234]) by smtp.gmail.com with ESMTPSA id r205sm859112ywb.70.2019.03.06.06.04.22 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 06 Mar 2019 06:04:23 -0800 (PST) From: Adam Ford To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 2/3] ARM: DTS: imx6q-logicpd: Reduce inrush current on start Date: Wed, 6 Mar 2019 08:04:00 -0600 Message-Id: <20190306140402.17122-2-aford173@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190306140402.17122-1-aford173@gmail.com> References: <20190306140402.17122-1-aford173@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190306_060426_020944_51B20500 X-CRM114-Status: GOOD ( 10.73 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Fabio Estevam , Adam Ford , Sascha Hauer , linux-kernel@vger.kernel.org, Rob Herring , NXP Linux Team , Pengutronix Kernel Team , Shawn Guo MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The main 3.3V regulator sources a series of additional regulators. This patch adds a small delay, so when the 3.3V regulator comes on it delays a bit before the subsequent regulators can come on. This reduces the inrush current a bit on the external DC power supply. Fixes: 1c207f911fe9 ("ARM: dts: imx: Add support for Logic PD i.MX6QD EVM") Signed-off-by: Adam Ford diff --git a/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi b/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi index fb01fa6e4224..e31b6923cb72 100644 --- a/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi +++ b/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi @@ -99,6 +99,7 @@ regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; gpio = <&gpio1 26 GPIO_ACTIVE_HIGH>; + startup-delay-us = <70000>; enable-active-high; regulator-always-on; };