Thank you for all your help and time so far.
I am an engineer by training and profession and In school we always jokingly
used to say
"If all else fails use brute force (F!)".
So to try out your theory I conducted the following test. I added a line to
sxipio.c:
/* Get pin configuration. */
reg = SXIREAD4(sc, SXIPIO_CFG(port, pin));
off = (pin & 0x7) << 2;
cfg = (reg >> off) & 0x7;
if(cfg == 7) cfg = 0;
for (m = 0; m < 8; m++)
if (sc->sc_pins[i].funcs[m].mux == cfg)
break;
printf("%c%d mux %d<%s>%s", 'A' +
(u_int)sc->sc_pins[i].port,
sc->sc_pins[i].pin, cfg,
m >= 8 ? "invalid" : sc->sc_pins[i].funcs[m].name,
cfg < 2 ? "- adding\n" : "- skipping\n");
/* Skip pins that have been assigned other functions. */
and got the results below:
Trying to boot from MMC1
U-Boot 2017.09-rc2 (Aug 22 2017 - 00:26:16 -0600) Allwinner Technology
CPU: Allwinner H3 (SUN8I 1680)
Model: Xunlong Orange Pi One
DRAM: 512 MiB
MMC: SUNXI SD/MMC: 0
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
Net: phy interface0
eth0: ethernet@1c30000
starting USB...
USB0: USB EHCI 1.00
USB1: USB OHCI 1.0
scanning bus 0 for devices... 2 USB Device(s) found
scanning usb for storage devices... 0 Storage Device(s) found
Hit any key to stop autoboot: 0
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
reading /sun8i-h3-orangepi-one.dtb
14504 bytes read in 25 ms (566.4 KiB/s)
Found EFI removable media binary efi/boot/bootarm.efi
reading efi/boot/bootarm.efi
67356 bytes read in 36 ms (1.8 MiB/s)
## Starting EFI application at 42000000 ...
Scanning disks on usb...
Scanning disks on mmc...
MMC Device 1 not found
MMC Device 2 not found
MMC Device 3 not found
Found 5 disks
>> OpenBSD/armv7 BOOTARM 1.0
boot>
booting sd0a:/bsd: 3906928+165972+496428 [282683+90+518560+243869]=0x56101c
OpenBSD/armv7 booting ...
arg0 0xc086101c arg1 0x0 arg2 0x48000000
Allocating page tables
freestart = 0x40862000, free_pages = 128926 (0x0001f79e)
IRQ stack: p0x40890000 v0xc0890000
ABT stack: p0x40891000 v0xc0891000
UND stack: p0x40892000 v0xc0892000
SVC stack: p0x40893000 v0xc0893000
Creating L1 page table at 0x40864000
Mapping kernel
Constructing L2 page tables
undefined page pmap [ using 1045660 bytes of bsd ELF symbol table ]
board type: 0
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
Copyright (c) 1995-2017 OpenBSD. All rights reserved.
https://www.OpenBSD.org
OpenBSD 6.2-beta (GENERIC) #6: Mon Aug 28 19:01:57 PDT 2017
sysad...@openbsdop1.graf.lan:/usr/src/sys/arch/armv7/compile/GENERIC
real mem = 536870912 (512MB)
avail mem = 517378048 (493MB)
mainbus0 at root: Xunlong Orange Pi One
cpu0 at mainbus0: ARM Cortex-A7 r0p5 (ARMv7)
cpu0: DC enabled IC enabled WB disabled EABT branch prediction enabled
cpu0: 32KB(32b/l,2way) I-cache, 32KB(64b/l,4way) wr-back D-cache
cortex0 at mainbus0
sxiccmu0 at mainbus0
psci0 at mainbus0
simplebus0 at mainbus0: "soc"
sxiccmu1 at simplebus0
sxipio0 at simplebus0: 94 pins
sxipio1 at simplebus0: 12 pins
sximmc0 at simplebus0
sdmmc0 at sximmc0: 4-bit, sd high-speed, mmc high-speed, dma
ehci0 at simplebus0
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 configuration 1 interface 0 "Generic EHCI root hub" rev
2.00/1.00 addr 1
ehci1 at simplebus0
usb1 at ehci1: USB revision 2.0
uhub1 at usb1 configuration 1 interface 0 "Generic EHCI root hub" rev
2.00/1.00 addr 1
sxidog0 at simplebus0
com0 at simplebus0: ns16550, no working fifo
com0: console
ampintc0 at simplebus0 nirq 160, ncpu 4
sxirtc0 at simplebus0
A0 mux 0<gpio_in>- adding
A1 mux 0<gpio_in>- adding
A2 mux 0<gpio_in>- adding
A3 mux 0<gpio_in>- adding
A4 mux 2<uart0>- skipping
A5 mux 2<uart0>- skipping
A6 mux 0<gpio_in>- adding
A7 mux 0<gpio_in>- adding
A8 mux 0<gpio_in>- adding
A9 mux 0<gpio_in>- adding
A10 mux 0<gpio_in>- adding
A11 mux 0<gpio_in>- adding
A12 mux 0<gpio_in>- adding
A13 mux 0<gpio_in>- adding
A14 mux 0<gpio_in>- adding
A15 mux 0<gpio_in>- adding
A16 mux 0<gpio_in>- adding
A17 mux 0<gpio_in>- adding
A18 mux 0<gpio_in>- adding
A19 mux 0<gpio_in>- adding
A20 mux 0<gpio_in>- adding
A21 mux 0<gpio_in>- adding
C0 mux 0<gpio_in>- adding
C1 mux 0<gpio_in>- adding
C2 mux 0<gpio_in>- adding
C3 mux 0<gpio_in>- adding
C4 mux 0<gpio_in>- adding
C5 mux 0<gpio_in>- adding
C6 mux 0<gpio_in>- adding
C7 mux 0<gpio_in>- adding
C8 mux 0<gpio_in>- adding
C9 mux 0<gpio_in>- adding
C10 mux 0<gpio_in>- adding
C11 mux 0<gpio_in>- adding
C12 mux 0<gpio_in>- adding
C13 mux 0<gpio_in>- adding
C14 mux 0<gpio_in>- adding
C15 mux 0<gpio_in>- adding
C16 mux 0<gpio_in>- adding
D0 mux 0<gpio_in>- adding
D1 mux 0<gpio_in>- adding
D2 mux 0<gpio_in>- adding
D3 mux 0<gpio_in>- adding
D4 mux 0<gpio_in>- adding
D5 mux 0<gpio_in>- adding
D6 mux 0<gpio_in>- adding
D7 mux 0<gpio_in>- adding
D8 mux 0<gpio_in>- adding
D9 mux 0<gpio_in>- adding
D10 mux 0<gpio_in>- adding
D11 mux 0<gpio_in>- adding
D12 mux 0<gpio_in>- adding
D13 mux 0<gpio_in>- adding
D14 mux 0<gpio_in>- adding
D15 mux 0<gpio_in>- adding
D16 mux 0<gpio_in>- adding
D17 mux 0<gpio_in>- adding
E0 mux 0<gpio_in>- adding
E1 mux 0<gpio_in>- adding
E2 mux 0<gpio_in>- adding
E3 mux 0<gpio_in>- adding
E4 mux 0<gpio_in>- adding
E5 mux 0<gpio_in>- adding
E6 mux 0<gpio_in>- adding
E7 mux 0<gpio_in>- adding
E8 mux 0<gpio_in>- adding
E9 mux 0<gpio_in>- adding
E10 mux 0<gpio_in>- adding
E11 mux 0<gpio_in>- adding
E12 mux 0<gpio_in>- adding
E13 mux 0<gpio_in>- adding
E14 mux 0<gpio_in>- adding
E15 mux 0<gpio_in>- adding
F0 mux 2<mmc0>- skipping
F1 mux 2<mmc0>- skipping
F2 mux 2<mmc0>- skipping
F3 mux 2<mmc0>- skipping
F4 mux 2<mmc0>- skipping
F5 mux 2<mmc0>- skipping
F6 mux 0<gpio_in>- adding
G0 mux 0<gpio_in>- adding
G1 mux 0<gpio_in>- adding
G2 mux 0<gpio_in>- adding
G3 mux 0<gpio_in>- adding
G4 mux 0<gpio_in>- adding
G5 mux 0<gpio_in>- adding
G6 mux 0<gpio_in>- adding
G7 mux 0<gpio_in>- adding
G8 mux 0<gpio_in>- adding
G9 mux 0<gpio_in>- adding
G10 mux 0<gpio_in>- adding
G11 mux 0<gpio_in>- adding
G12 mux 0<gpio_in>- adding
G13 mux 0<gpio_in>- adding
gpio0 at sxipio0: 32 pins
gpio1 at sxipio0: 32 pins
gpio2 at sxipio0: 32 pins
gpio3 at sxipio0: 32 pins
gpio4 at sxipio0: 32 pins
gpio5 at sxipio0: 32 pins
gpio6 at sxipio0: 32 pins
A0 mux 0<gpio_in>- adding
A1 mux 0<gpio_in>- adding
A2 mux 0<gpio_in>- adding
A3 mux 0<gpio_in>- adding
A4 mux 0<gpio_in>- adding
A5 mux 0<gpio_in>- adding
A6 mux 0<gpio_in>- adding
A7 mux 0<gpio_in>- adding
A8 mux 0<gpio_in>- adding
A9 mux 0<gpio_in>- adding
A10 mux 0<gpio_in>- adding
A11 mux 0<gpio_in>- adding
gpio7 at sxipio1: 32 pins
agtimer0 at mainbus0: tick rate 24000 KHz
scsibus0 at sdmmc0: 2 targets, initiator 0
sd0 at scsibus0 targ 1 lun 0: <SD/MMC, SL16G, 0080> SCSI2 0/direct removable
sd0: 15193MB, 512 bytes/sector, 31116288 sectors
run0 at uhub1 port 1 configuration 1 interface 0 "Ralink 802.11 n WLAN" rev
2.00/1.01 addr 2
run0: MAC/BBP RT3070 (rev 0x0201), RF RT3020 (MIMO 1T1R), address
00:1f:cf:52:86:52
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
scsibus2 at softraid0: 256 targets
boot device: sd0
root on sd0a (e50fea1f8609b974.a) swap on sd0b dump on sd0b
Automatic boot in progress: starting file system checks.
/dev/sd0a (e50fea1f8609b974.a): file system is clean; not checking
/dev/sd0l (e50fea1f8609b974.l): file system is clean; not checking
/dev/sd0d (e50fea1f8609b974.d): file system is clean; not checking
/dev/sd0f (e50fea1f8609b974.f): file system is clean; not checking
/dev/sd0g (e50fea1f8609b974.g): file system is clean; not checking
/dev/sd0h (e50fea1f8609b974.h): file system is clean; not checking
/dev/sd0k (e50fea1f8609b974.k): file system is clean; not checking
/dev/sd0j (e50fea1f8609b974.j): file system is clean; not checking
/dev/sd0e (e50fea1f8609b974.e): file system is clean; not checking
setting tty flags
pf enabled
starting network
DHCPREQUEST on run0 to 255.255.255.255
DHCPACK from 192.168.1.253 (cc:5d:4e:ad:f4:0f)
bound to 192.168.1.6 -- renewal in 43200 seconds.
reordering libraries: done.
starting early daemons: syslogd pflogd ntpd.
starting RPC daemons:.
savecore: no core dump
checking quotas: done.
clearing /tmp
In rc.securelevel, setting gpio.
PA15
pin 15: caps: in out, flags: in -> out
PD14
pin 14: caps: in out, flags: in -> out
PL10
pin 10: caps: in out, flags: in -> out
kern.securelevel: 0 -> 1
creating runtime link editor directory cache.
preserving editor files.
starting network daemons: sshd smtpd sndiod.
starting local daemons: cron.
Mon Aug 28 20:45:24 PDT 2017
OpenBSD/armv7 (openbsdop1.graf.lan) (console)
login: sysadmin
Password:
Last login: Mon Aug 28 20:36:25 on ttyp0 from 192.168.1.3
OpenBSD 6.2-beta (GENERIC) #6: Mon Aug 28 19:01:57 PDT 2017
Welcome to OpenBSD: The proactively secure Unix-like operating system.
Please use the sendbug(1) utility to report bugs in the system.
Before reporting a bug, please try to reproduce it with the latest
version of the code. With bug reports, please try to ensure that
enough information to reproduce the problem is enclosed, and if a
known fix for it exists, include that as well.
You have new mail.
$ su
Password:
# gpioctl gpio0 15 toggle
pin 15: state 0 -> 1
# gpioctl gpio0 15 toggle
pin 15: state 1 -> 0
# gpioctl gpio0 15 toggle
pin 15: state 0 -> 1
# gpioctl gpio0 15 toggle
pin 15: state 1 -> 0
# gpioctl gpio0 15 toggle
pin 15: state 0 -> 1
# gpioctl gpio0 15 toggle
pin 15: state 1 -> 0
#
And the red light goes on and off!
-----Original Message-----
From: owner-...@openbsd.org [mailto:owner-...@openbsd.org] On Behalf Of Mark
Kettenis
Sent: Monday, August 28, 2017 11:05 AM
To: s_g...@telus.net
Cc: artturi....@gmail.com; arm@openbsd.org
Subject: Re: looking for help on gpio setup on orange pi one
> From: "Stephen Graf" <s_g...@telus.net>
> Date: Mon, 28 Aug 2017 10:30:51 -0700
>
> I tied your suggested change with the following results.
> Not yet what I am thinking is correct.
> sxirtc0 at simplebus0
> A0 mux 7<invalid>- skipping
> A1 mux 7<invalid>- skipping
> A2 mux 7<invalid>- skipping
> A3 mux 7<invalid>- skipping
> A4 mux 2<uart0>- skipping
> A5 mux 2<uart0>- skipping
> A6 mux 7<invalid>- skipping
> A7 mux 7<invalid>- skipping
> A8 mux 7<invalid>- skipping
> A9 mux 7<invalid>- skipping
> A10 mux 7<invalid>- skipping
> A11 mux 7<invalid>- skipping
> A12 mux 7<invalid>- skipping
> A13 mux 7<invalid>- skipping
> A14 mux 7<invalid>- skipping
> A15 mux 7<invalid>- skipping
> A16 mux 7<invalid>- skipping
> A17 mux 7<invalid>- skipping
> A18 mux 7<invalid>- skipping
> A19 mux 7<invalid>- skipping
> A20 mux 7<invalid>- skipping
> A21 mux 7<invalid>- skipping
> C0 mux 7<invalid>- skipping
> C1 mux 7<invalid>- skipping
> C2 mux 7<invalid>- skipping
> C3 mux 7<invalid>- skipping
> C4 mux 7<invalid>- skipping
> C5 mux 7<invalid>- skipping
> C6 mux 7<invalid>- skipping
> C7 mux 7<invalid>- skipping
> C8 mux 7<invalid>- skipping
> C9 mux 7<invalid>- skipping
> C10 mux 7<invalid>- skipping
> C11 mux 7<invalid>- skipping
> C12 mux 7<invalid>- skipping
> C13 mux 7<invalid>- skipping
> C14 mux 7<invalid>- skipping
> C15 mux 7<invalid>- skipping
> C16 mux 7<invalid>- skipping
> D0 mux 7<invalid>- skipping
> D1 mux 7<invalid>- skipping
> D2 mux 7<invalid>- skipping
> D3 mux 7<invalid>- skipping
> D4 mux 7<invalid>- skipping
> D5 mux 7<invalid>- skipping
> D6 mux 7<invalid>- skipping
> D7 mux 7<invalid>- skipping
> D8 mux 7<invalid>- skipping
> D9 mux 7<invalid>- skipping
> D10 mux 7<invalid>- skipping
> D11 mux 7<invalid>- skipping
> D12 mux 7<invalid>- skipping
> D13 mux 7<invalid>- skipping
> D14 mux 7<invalid>- skipping
> D15 mux 7<invalid>- skipping
> D16 mux 7<invalid>- skipping
> D17 mux 7<invalid>- skipping
> E0 mux 7<invalid>- skipping
> E1 mux 7<invalid>- skipping
> E2 mux 7<invalid>- skipping
> E3 mux 7<invalid>- skipping
> E4 mux 7<invalid>- skipping
> E5 mux 7<invalid>- skipping
> E6 mux 7<invalid>- skipping
> E7 mux 7<invalid>- skipping
> E8 mux 7<invalid>- skipping
> E9 mux 7<invalid>- skipping
> E10 mux 7<invalid>- skipping
> E11 mux 7<invalid>- skipping
> E12 mux 7<invalid>- skipping
> E13 mux 7<invalid>- skipping
> E14 mux 7<invalid>- skipping
> E15 mux 7<invalid>- skipping
> F0 mux 2<mmc0>- skipping
> F1 mux 2<mmc0>- skipping
> F2 mux 2<mmc0>- skipping
> F3 mux 2<mmc0>- skipping
> F4 mux 2<mmc0>- skipping
> F5 mux 2<mmc0>- skipping
> F6 mux 0<gpio_in>- adding
> G0 mux 7<invalid>- skipping
> G1 mux 7<invalid>- skipping
> G2 mux 7<invalid>- skipping
> G3 mux 7<invalid>- skipping
> G4 mux 7<invalid>- skipping
> G5 mux 7<invalid>- skipping
> G6 mux 7<invalid>- skipping
> G7 mux 7<invalid>- skipping
> G8 mux 7<invalid>- skipping
> G9 mux 7<invalid>- skipping
> G10 mux 7<invalid>- skipping
> G11 mux 7<invalid>- skipping
> G12 mux 7<invalid>- skipping
> G13 mux 7<invalid>- skipping
> gpio0 at sxipio0: 32 pins
> gpio1 at sxipio0: 32 pins
> gpio2 at sxipio0: 32 pins
> gpio3 at sxipio0: 32 pins
> gpio4 at sxipio0: 32 pins
> gpio5 at sxipio0: 32 pins
> gpio6 at sxipio0: 32 pins
> A0 mux 7<invalid>- skipping
> A1 mux 7<invalid>- skipping
> A2 mux 7<invalid>- skipping
> A3 mux 7<invalid>- skipping
> A4 mux 7<invalid>- skipping
> A5 mux 7<invalid>- skipping
> A6 mux 7<invalid>- skipping
> A7 mux 7<invalid>- skipping
> A8 mux 7<invalid>- skipping
> A9 mux 7<invalid>- skipping
> A10 mux 7<invalid>- skipping
> A11 mux 7<invalid>- skipping
> gpio7 at sxipio1: 32 pins
Actually this starts to make sense. If you look at page 316 and further of
the H3 data sheet:
http://linux-sunxi.org/images/4/4b/Allwinner_H3_Datasheet_V1.2.pdf
you'll see that the pins most pins come up in state 7 "IO disable". I think
we can allow configurtion of pins thet are left in this state without too
much risk.
I don't have much time to look into this right now myself. But please
remind me in the 2nd half of september if nothing happens before then.
