Messages in this thread | | | From | Joakim Zhang <> | Subject | RE: [PATCH] can: flexcan: Implement CAN Runtime PM | Date | Tue, 27 Nov 2018 07:44:29 +0000 |
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> -----Original Message----- > From: Marc Kleine-Budde <mkl@pengutronix.de> > Sent: 2018年11月21日 22:36 > To: Joakim Zhang <qiangqing.zhang@nxp.com>; wg@grandegger.com; > davem@davemloft.net > Cc: linux-can@vger.kernel.org; netdev@vger.kernel.org; > linux-kernel@vger.kernel.org; dl-linux-imx <linux-imx@nxp.com>; Aisheng > DONG <aisheng.dong@nxp.com> > Subject: Re: [PATCH] can: flexcan: Implement CAN Runtime PM > > On 10/19/18 11:45 AM, Joakim Zhang wrote: > > From: Dong Aisheng <aisheng.dong@nxp.com> > > > > Flexcan will be disabled during suspend if no wakeup function required > > and enabled after resume accordingly. During this period, we could > > explicitly disable clocks. > > > > Implement Runtime PM which will: > > 1) Keep device in suspend state (clocks disabled) if it's not openned > > 2) Make Power Domain framework be able to shutdown the corresponding > > power domain of this device. > > Without CONFIG_PM the device fails to probe: > > > [ 214.420606] flexcan 2090000.flexcan: 2090000.flexcan supply xceiver > > not found, using dummy regulator [ 214.445952] flexcan > > 2090000.flexcan: Linked as a consumer to regulator.0 [ 214.453448] > > flexcan 2090000.flexcan: registering netdev failed [ 214.459666] > > flexcan 2090000.flexcan: Dropping the link to regulator.0 [ > > 214.472066] flexcan: probe of 2090000.flexcan failed with error -110 > > Marc
Hi Marc,
I would sent V2 rebased on patch "can: flexcan: add self wakeup support", and runtime pm works normally on MX6SX-SDB and MX7D-SDB. So, could you tell me which board you tested on that causes the device probe failed?
And that CONFIG_PM has set in imx_v6_v7_defconfig which config file I used.
Best Regards, Joakim Zhang
> -- > Pengutronix e.K. | Marc Kleine-Budde | > Industrial Linux Solutions | Phone: +49-231-2826-924 | > Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | > Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
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