Date: Thu, 28 May 2020 17:37:42 +0200 From: =?utf-8?Q?Klaus_K=C3=BCchemann?= <maciphone2@googlemail.com> To: Robert Crowston <crowston@protonmail.com>, freebsd-arm@freebsd.org Subject: Re: Driver for Raspberry Pi 4 PCI-express controller Message-ID: <46519DEB-E96D-43DD-B739-401F9F51371E@googlemail.com> In-Reply-To: <1RBZ-1AclgkiNDwWUqrWhun8T8YSAX6g64NeSc2DKy9EF1wGsJobselP4UYGflpcmbfUx3sEEM2YplIJOXPmZ6EG_GwiMC1_3GLrqpZxisQ=@protonmail.com> References: <Pm_LEzoJP7MAKrZ9L-pRYQ4-qTv7TK1QARu1mwqoNFS5mzra-4zmS_0WYotf7CKSKDoZ2fjC3BSEUGIy-k95Qv1g35Zq0AsfiXwLHXpS0bE=@protonmail.com> <7F058E92-DDD3-4728-9A51-09BF1D47855C@googlemail.com> <1RBZ-1AclgkiNDwWUqrWhun8T8YSAX6g64NeSc2DKy9EF1wGsJobselP4UYGflpcmbfUx3sEEM2YplIJOXPmZ6EG_GwiMC1_3GLrqpZxisQ=@protonmail.com>
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> Am 28.05.2020 um 16:57 schrieb Robert Crowston = <crowston@protonmail.com>: >=20 > Thanks Klaus. >=20 > I see that the Pi foundation has today released the 8 GB Raspberry Pi = 4. Unfortunately the driver here only provides the controller a 4 GB = window into system memory, but I believe it should not be too hard to = tweak. >=20 > =E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90 = Original Message =E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2= =80=90 > On Wednesday, 27 May 2020 08:40, Klaus K=C3=BCchemann = <maciphone2@googlemail.com> wrote: Thanks Robert , =E2=80=A6. you forced me to order an 8GB-model :-), since we need at = least=20 2 persons to test your driver.`guess it will arrive here in 2 or 4 days. Didn=E2=80=99t find the time yet for further testing ...`will do a = Wiki-entry tonight =E2=80=A6.=20 There=E2=80=99s something special with the RPI4 using QWord , perhaps = you can take a look at : = https://github.com/tianocore/edk2-platforms/blob/master/Platform/Raspberry= Pi/AcpiTables/Xhci.asl#L118 (and the OpenBSD-xhci-driver which addresses that issue) (saw your comment in edkII-branch). >=20 >>=20 >>=20 >>> Am 27.05.2020 um 00:20 schrieb Robert Crowston via freebsd-arm = freebsd-arm@freebsd.org: >>> A patch adding support for the pcie controller on the bcm2838 chip = is available here: >>> = https://github.com/RobCrowston/freebsd/commit/3626d1f774a72f2f77feedf10042= 9d0a23ac50c8.patch >>=20 >> thanks =E2=80=A6. >>=20 >>> This is still in development, but it is ready for wider testing. >>=20 >> dmesg : >> https://dmesgd.nycbug.org/index.cgi?do=3Dview&id=3D5517 >>=20 >>> I have tested this patch on three different Pi4s I have, including a = 2 GB and a 4 GB model. For the most part HIDs like keyboards and mice = are reliable, but data transfers from mass storage devices can = sometimes, though not reproducibly, cause the xHCI controller to reset. >>=20 >> For me keyboard/mouse sometimes worked after reboot/detach<->attach, = sometimes worked not(using Original RPI4-power adaptor). As seen in = dmesg I could mount USB thumb drive. >>=20 >> I suspect the generic_xhci driver(s) for the problems and I guess = there some =E2=80=9Aquirks=E2=80=98 have to be added there(also for = ACPI)... >>=20 >> I will test it in more detail and then publish it in the wiki if you = don't want to do it yourself in the wiki. >>=20 >>> I have only tested it against the soldered-on xHCI chip; if anyone = has desoldered it and replaced it with a pci-pci bridge, that would be = interesting to hear about. >>> Before I submit this to phabricator, assuming there is interest, I = would be interested to hear others' experiences with it, or indeed any = other feedback. >>>=20 >>> freebsd-arm@freebsd.org mailing list >>> https://lists.freebsd.org/mailman/listinfo/freebsd-arm >>> To unsubscribe, send any mail to = "freebsd-arm-unsubscribe@freebsd.org" >=20 >=20
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