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U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 MIME-Version: 1.0 Content-Language: en-US X-Provags-ID: V03:K1:un60TQF6vezWeQPfwPpE6ncRDplfXim5XjEifJSImVhG+OOJZWm J/drw4EU+b0NwRVG2NKNd8l7VKFnycpQXraoZqJogIDhovZrB0JM5MYxbXfGMc/MIxhXv5b UEXhqYGVfngD5dnGVl69rXEpYLHR5lEV3Yv8aKqrzm1iCM78XZzIO01DeEvse0m65i5zyg/ DLJlDSTX2fosFaqQPsiLw== X-UI-Out-Filterresults: notjunk:1;V03:K0:l0OLpdLXsoE=:YFuKtvjd2x8LOTB2lDrwRi zITKbEjIDlDYgfyOnM1FpIclXjQuY/BwJ0or2pSPCMQUgG1R9rcuoEiIkK4ut+qx/EOpqDB8V 1uC/nhIrJ5nsqRD5cyuM/R6xl/Lv/J9fhIELlOFjTSpxdyw/VvAlcrtEAesHTQZdIAtneTCqJ ln77a1tL4qGEiRwXll7XTQUGa5S6buPLe4+aSoYaZE97NRKsXZlvvon8RKOYk4NrW/JbIwbPR iZx7ACW9UjKuoO86LTkFVaArVKyH1I9CDVkXnfyN2Crp8WJZdQrOZ8+zGf46TGTB3WSxnGgXS CTIp8GJM5dx1JV1+Iq6A1tn2hOAHWXHRJ9k6hiv6ZbHQdYqmi8AKHYYYqtnGyS96d0RANMTLp dqIIByfg9A5g8oUkKgquVJVDsNq4VlR23YQ05SNxVHGe9aHTYKmJoJygfnhyzXamAv0oLk3wF sfBhQXulAUHKmp7zngF9hbb0BGCeWlBnkVEMt41dmpgedSw0PPJ27KzpGQBmpK3Ph7IKcmKaQ Lke68sCiJrpMxanu07rju7PNhs+9i78I0Rd3/UJ7WoPbpnv3vAKx0y+a4gs+afS2SE2/YTYoZ fW+6rk1+WdZGlxE03lDw8BGvCzenQsA/+Sx/8LD7NrUn+19vmvLdjDRgNF54GObPRrnMWU8mz kJ1VgQVnqHDg45t9+q2HYhIyUZaAilgRzmi6mITX1xT2q8jF3ZMVcQXzmYQZyzK+N3dFssAgn XdD0GKWyCTV/V7IOfX5T+oCeA6JODL5TOVS9+DgrAotFTxs7ojhZYF9ZggprT4el0YyeMeELK 7p+9Tr0fx02RQ490l+Ntr1GAu3mx6bzYPLp7kbwcqN7XfWmFP0P71lZrnVU2sedsGImEc6LKy NUva2KEQ/n6B76pc7tTTOlbAqsc7WJU7TB54/Yze0qQUiwz2iZl0d4U640z3Yz X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181230_033842_924713_D646935D X-CRM114-Status: GOOD ( 11.73 ) 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: linux-wireless@vger.kernel.org, "Reizer, Eyal" , John Stultz , Valentin Schneider , Ryan Grachek Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Jan Kiszka Somewhere along recent changes to power control of the wl1835, power-on became very unreliable on the hikey, failing like this: wl1271_sdio: probe of mmc2:0001:1 failed with error -16 wl1271_sdio: probe of mmc2:0001:2 failed with error -16 After playing with some dt parameters and comparing to other users of this chip, it turned out we need some power-on delay to make things stable again. In contrast to those other users which define 200 ms, the hikey is already very happy with 1 ms. Signed-off-by: Jan Kiszka --- Tested with 4.19 and linus/master. arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts index f4964bee6a1a..1e771bf201b9 100644 --- a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts +++ b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts @@ -118,6 +118,7 @@ reset-gpios = <&gpio0 5 GPIO_ACTIVE_LOW>; clocks = <&pmic>; clock-names = "ext_clock"; + post-power-on-delay-ms = <1>; power-off-delay-us = <10>; }; -- 2.16.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel