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Fri, 8 Jun 2018 18:46:39 +0000 From: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk> To: openwrt-devel@lists.openwrt.org Cc: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk> Subject: [PATCH] ramips: mir3g: reduce usb power flapping at boot Date: Fri, 8 Jun 2018 19:45:34 +0100 Message-Id: <20180608184534.43084-1-ldir@darbyshire-bryant.me.uk> X-Mailer: git-send-email 2.15.1 (Apple Git-101) MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [151.224.33.36] X-ClientProxiedBy: LO2P265CA0176.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:a::20) To VI1PR07MB4254.eurprd07.prod.outlook.com (2603:10a6:802:65::19) X-MS-PublicTrafficType: Email X-Microsoft-Antispam: UriScan:; BCL:0; PCL:0; RULEID:(7020095)(4652020)(7021125)(5600026)(4534165)(7022125)(4603075)(4627221)(201702281549075)(7048125)(7024125)(7027125)(7028125)(7023125)(2017052603328)(7153060)(7193020); SRVR:VI1PR07MB4254; X-Microsoft-Exchange-Diagnostics: 1; VI1PR07MB4254; 3:ORIcqfsxR1bsdZISrhE4kw7JnrkcF8rVip3WjhmT5sg/gSBeA+ZOfkwcDZkZsBNdIbaDX3hUrY5c/AwMSMwjvoZyOqlRT1MhcgdGZqZiiMWlRw+1Jo4q8f36EY8IMxau2XBQtVKbPZzgrw2Yr/jGnx92mjfBNZ5lujHsSxYA6eqb39q3VOQ258ZGWAHHWAmkHl7rn39eiMigaBOUChfgUu1fSZOuQRUpXfO/djHejjyctp9BBfB8ZDbt15TXurpb; 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X-Spam-Score: -0.1 (/) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-0.1 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [104.47.0.74 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain Define USB port power as set on by bootloader (which it is) The power gets cycled at kernel boot, but by defining as 'regulator-boot-on' reduces the power off to power on at driver initial load & setup from around 5 seconds to around 2 seconds. Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk> --- target/linux/ramips/dts/MIR3G.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/target/linux/ramips/dts/MIR3G.dts b/target/linux/ramips/dts/MIR3G.dts index 44dfc1796c..1ca085e6c4 100644 --- a/target/linux/ramips/dts/MIR3G.dts +++ b/target/linux/ramips/dts/MIR3G.dts @@ -72,6 +72,7 @@ regulator-min-microvolt = <5000000>; regulator-max-microvolt = <5000000>; gpio = <&gpio0 12 GPIO_ACTIVE_HIGH>; + regulator-boot-on; enable-active-high; }; -- 2.15.1 (Apple Git-101) ]