On Thu, Jan 3, 2019 at 6:57 PM Zoltan HERPAI <wigy...@uid0.hu> wrote: > > Hi all, > > The DTS resync between 2018.09 and 2018.11 seems to have broken the MMC > support for the Linksprite pcDuino (A10) and pcDuino v3 (A20) boards. > The resync happened in b9d59d0 [1] and 3c92cca [2], after which u-boot > doesn't recognize the MMC controller and freezes the board (exactly the > same happens on the v3 board). > > ---- CUT HERE ---- > U-Boot SPL 2018.11 (Dec 31 2018 - 14:36:52 +0000) > DRAM: 1024 MiB > CPU: 1008000000Hz, AXI/AHB/APB: 3/2/2 > Trying to boot from MMC1 > > > U-Boot 2018.11 (Dec 31 2018 - 14:36:52 +0000) Allwinner Technology > > CPU: Allwinner A10 (SUN4I) > Model: LinkSprite pcDuino > I2C: ready > DRAM: 1 GiB > MMC: > ---- CUT HERE ---- > > Reverting these commits solve the problem and the boards boot correctly. > Initially I thought this might be due to removing the > mmc0_cd_pin_reference_design (syncing that from the kernel into u-boot), > which was discussed here [3] and was considered as a move that might > break MMC on some boards, but re-adding that reference pin only in the > pcduino DTSes did not resolve the freeze. > > Questions: > - A similar board - where the reference pin is used for CD - is the > Cubieboard 2. Can someone test 2018.11 on it to see if it freezes as > well? Out of A20, I have a Bananapro, but that's using a non-reference > pin for CD, and boots fine.
A10, enable DM_MMC so it can effect DT. or enable CONFIG_MMC0_CD_PIN="PH1" Added Adam, (who actually tested DM_MMC on A10) A20, can boot as it is, it doesn't effect mmc node on DT, since DM_MMC is not available. > - There are some clock-related changes in this DTS resync, however I > have less than optimal experience with clocks. Can someone help check if > these changes might cause the issue? OK, better dump the clock reg value at the end of sunxi_mmc_probe -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
