On Fri, Jul 19, 2019 at 9:29 PM Xavier Ruppen <xrup...@gmail.com> wrote: > > When powering off the Odroid N2, the tflash_vdd regulator is > automatically turned off by the kernel. This is a problem > when issuing the "reboot" command while using an SD card. > The boot ROM does not power this regulator back on, blocking > the reboot process at the boot ROM stage, preventing the > SD card from being detected. > > Adding the "regulator-always-on" property fixes the problem. > > Signed-off-by: Xavier Ruppen <xrup...@gmail.com> Reviewed-by: Martin Blumenstingl <martin.blumensti...@googlemail.com>
> --- > > Here is what the boot ROM output looks like without this patch: > > [root@alarm ~]# reboot > [...] > [ 24.275860] shutdown[1]: All loop devices detached. > [ 24.278864] shutdown[1]: Detaching DM devices. > [ 24.287105] kvm: exiting hardware virtualization > [ 24.318776] reboot: Restarting system > bl31 reboot reason: 0xd > bl31 reboot reason: 0x0 > system cmd 1. > G12B:BL:6e7c85:7898ac;FEAT:E0F83180:2000;POC:F;RCY:0; > EMMC:800;NAND:81;SD?:0;SD:400;USB:8;LOOP:1;EMMC:800; > NAND:81;SD?:0;SD:400;USB:8;LOOP:2;EMMC:800;NAND:81; > SD?:0;SD:400;USB:8;LOOP:3; [...] > > Other people can be seen having this problem on the odroid > forum [1]. thank you for submitting this patch (and not keeping it to yourself)! > The cause of the problem was found by Martin Blumenstingl > on #linux-amlogic. We may want to add his Suggested-by tag > if he agrees. yes, if you re-send this patch to address Neil's comment then feel free to add my Reviewed-by as well as a Suggested-by Martin
