From mboxrd@z Thu Jan 1 00:00:00 1970 From: geomatsi@gmail.com (Sergey Matyukevich) Date: Tue, 7 Nov 2017 23:12:45 +0300 Subject: [PATCH 1/2] arm64: dts: orange-pi-zero-plus2: fix sdcard detect In-Reply-To: References: <20171103195855.15283-1-geomatsi@gmail.com> <20171103195855.15283-2-geomatsi@gmail.com> <20171104154221.ao7kkcwqhnja3cxe@speedy.hunter> <20171106122633.5mnqfh6xhmmxr45s@flea> <20171106161306.tq6yeq6bq36ridj3@speedy.hunter> Message-ID: <20171107201245.gptgfli54o6eqmrj@speedy.hunter> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi, > >>> > Did you try to boot from sdcard ? I am not able to boot my board from > >>> > sd-card without this change. As I mentioned earlier in my email > >>> > to buildroot mailing list, with mmc debug enabled I see that mmc > >>> > tries to init sd-card when I remove it from the slot. > >>> > > >>> > Maybe there is a minor differences between h/w versions or batches ? > >>> > What is you board version ? I tested on board v1.0. > >>> > >>> Looking at the schematics, it definitely looks like it's active low. > >> > >> Is it ok to merge it then ? Or using 'cd-inverted' property > >> is the preferable option ? > > > > W/o any change mainline works unstable for me, it wasn't booting > > at-all[1] did you find the same? > > > > Even tried with active LOW and cd-inverted. > > > > [1] https://paste.ubuntu.com/25909064/ > > Look like something broken for H5 and A64 between v4.14-rc8 to latest Both 4.13.7 and 4.14-rc8 (synched today) kernels worked fine for me. DTS behavior is all the same: - default DTS: sd-card is not detected, kernel is waiting forever - DTS with 'active low' or 'cd-inverted' fix: sd-card and boot ok I have been using rootfs from buildroot with your zero-plus2 patches. Regards, Sergey