From mboxrd@z Thu Jan 1 00:00:00 1970 From: Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= Subject: Re: [PATCH v2 0/6] serial: imx: handshaking fixes and improvments Date: Tue, 12 Apr 2016 19:30:32 +0200 Message-ID: <20160412173032.GS10108@pengutronix.de> References: <1458825865-7434-1-git-send-email-u.kleine-koenig@pengutronix.de> <20160411160128.GD26941@ibawizard.net> <20160412074622.GQ10108@pengutronix.de> <20160412094846.GF26941@ibawizard.net> <20160412105856.GR10108@pengutronix.de> <20160412121759.GG26941@ibawizard.net> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <20160412121759.GG26941@ibawizard.net> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Petr =?utf-8?Q?=C5=A0tetiar?= Cc: Martin Fuzzey , Baruch Siach , linux-serial@vger.kernel.org, Greg Kroah-Hartman , kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org List-Id: linux-serial@vger.kernel.org T24gVHVlLCBBcHIgMTIsIDIwMTYgYXQgMDI6MTc6NTlQTSArMDIwMCwgUGV0ciDFoHRldGlhciB3 cm90ZToKPiBVd2UgS2xlaW5lLUvDtm5pZyA8dS5rbGVpbmUta29lbmlnQHBlbmd1dHJvbml4LmRl PiBbMjAxNi0wNC0xMiAxMjo1ODo1Nl06Cj4gCj4gPiBvaywgc28gVUZDUl9EQ0VEVEUgaXMgc2V0 IGFuZCBVQ1IzX0RTUiBjb250cm9scyB0aGUgRFRSIG91dHB1dCBhcwo+ID4gaW50ZW5kZWQuIFdo YXQgaXMgY29ubmVjdGVkIHRvIHRoZSByZXNwZWN0aXZlIHBpbj8KPiA+IE1YNlFETF9QQURfRUlN X0QyNV9fVUFSVDFfRFNSX0IgSSB0aGluayBpcyB0aGUgb25lLgo+IAo+IEl0J3Mgcm91dGVkIG91 dCB0byBBcGFsaXMgU29NIHBpbiAxMjAsIHdoaWNoIGlzIHRoZW4gY29ubmVjdGVkIHZpYSAyMlIK PiByZXNpc3RvciBhbmQgdGhyb3VnaCBTTjY1QzMyNDNEQlIgUlMtMjMyIGxpbmUgZHJpdmVyIHRv IGhlYWRlciB3aGljaCBJIHVzZSBhcwo+IGRlYnVnL3NlcmlhbCBjb25zb2xlLgoKVGhlbiBJIGd1 ZXNzIHRoZSBwcm9ibGVtIGlzIHRoYXQgdGhlIHJzMjMyLXBhcnRuZXIgYXNzZXJ0cyB0aGUgaW14 NidzCkRTUiBpbiByZXBseSB0byB0aGUgaW14NiBhc3NlcnRpbmcgRFRSPwoKQmVzdCByZWdhcmRz ClV3ZQoKLS0gClBlbmd1dHJvbml4IGUuSy4gICAgICAgICAgICAgICAgICAgICAgICAgICB8IFV3 ZSBLbGVpbmUtS8O2bmlnICAgICAgICAgICAgfApJbmR1c3RyaWFsIExpbnV4IFNvbHV0aW9ucyAg ICAgICAgICAgICAgICAgfCBodHRwOi8vd3d3LnBlbmd1dHJvbml4LmRlLyAgfAoKX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5lbCBt YWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9s aXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo= From mboxrd@z Thu Jan 1 00:00:00 1970 From: u.kleine-koenig@pengutronix.de (Uwe =?iso-8859-1?Q?Kleine-K=F6nig?=) Date: Tue, 12 Apr 2016 19:30:32 +0200 Subject: [PATCH v2 0/6] serial: imx: handshaking fixes and improvments In-Reply-To: <20160412121759.GG26941@ibawizard.net> References: <1458825865-7434-1-git-send-email-u.kleine-koenig@pengutronix.de> <20160411160128.GD26941@ibawizard.net> <20160412074622.GQ10108@pengutronix.de> <20160412094846.GF26941@ibawizard.net> <20160412105856.GR10108@pengutronix.de> <20160412121759.GG26941@ibawizard.net> Message-ID: <20160412173032.GS10108@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Apr 12, 2016 at 02:17:59PM +0200, Petr ?tetiar wrote: > Uwe Kleine-K?nig [2016-04-12 12:58:56]: > > > ok, so UFCR_DCEDTE is set and UCR3_DSR controls the DTR output as > > intended. What is connected to the respective pin? > > MX6QDL_PAD_EIM_D25__UART1_DSR_B I think is the one. > > It's routed out to Apalis SoM pin 120, which is then connected via 22R > resistor and through SN65C3243DBR RS-232 line driver to header which I use as > debug/serial console. Then I guess the problem is that the rs232-partner asserts the imx6's DSR in reply to the imx6 asserting DTR? Best regards Uwe -- Pengutronix e.K. | Uwe Kleine-K?nig | Industrial Linux Solutions | http://www.pengutronix.de/ |