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Date: Thu, 19 Nov 2015 16:25:03 +0100 From: Bastien Nocera <hadess@...ess.net> To: Irina Tirdea <irina.tirdea@...el.com>, Dmitry Torokhov <dmitry.torokhov@...il.com>, Aleksei Mamlin <mamlinav@...il.com>, Karsten Merker <merker@...ian.org>, linux-input@...r.kernel.org Cc: Mark Rutland <mark.rutland@....com>, Rob Herring <robh+dt@...nel.org>, Octavian Purdila <octavian.purdila@...el.com>, linux-kernel@...r.kernel.org, devicetree@...r.kernel.org Subject: Re: [PATCH v11 2/8] Input: goodix - reset device at init On Thu, 2015-11-19 at 14:26 +0200, Irina Tirdea wrote: > After power on, it is recommended that the driver resets the device. > The reset procedure timing is described in the datasheet and is used > at device init (before writing device configuration) and > for power management. It is a sequence of setting the interrupt > and reset pins high/low at specific timing intervals. This procedure > also includes setting the slave address to the one specified in the > ACPI/device tree. This fails on a 4.3 kernel with an ACPI device (WinBook TW100): Goodix-TS: probe of i2c-GDIX1001:00 failed with error -16 Can you please document which upstream commit is necessary to make this behave properly? I'll test again with a newer kernel. Cheers -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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