[Arm-dev] kernel rebase for rpi2/rpi3 : call for feedback !

[Jordi Sanfeliu]

Hello,

I've discovered that with the new kernel the standard UART 16550 
(/dev/ttyS0) is not detected:

with kernel 4.1.9-v7:
---------------------
# dmesg | grep tty
[    0.000000] Kernel command line: 8250.nr_uarts=1 dma.dmachans=0x7f35 
bcm2708_fb.fbwidth=976 bcm2708_fb.fbheight=736 bcm2709.boardrev=0xa02082 
bcm2709.serial=0xfa9d86a7 smsc95xx.macaddr=B8:27:EB:9D:86:A7 
bcm2708_fb.fbswap=1 bcm2709.uart_clock=48000000 
vc_mem.mem_base=0x3dc00000 vc_mem.mem_size=0x3f000000 
dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p3 rootfstype=ext4 
elevator=deadline rootwait ipv6.disable=1
[    0.001289] console [tty1] enabled
[    0.283910] 3f215040.uart: ttyS0 at MMIO 0x3f215040 (irq = 29, 
base_baud = 31250000) is a 16550
[    0.998791] 3f201000.uart: ttyAMA0 at MMIO 0x3f201000 (irq = 83, 
base_baud = 0) is a PL011 rev2
[    2.511900] systemd[1]: Created slice system-getty.slice.
[    2.515620] systemd[1]: Starting system-getty.slice.


with kernel 4.4.14-v7:
---------------------
# dmesg | grep tty
[    0.000000] Kernel command line: 8250.nr_uarts=0 dma.dmachans=0x7f35 
bcm2708_fb.fbwidth=1232 bcm2708_fb.fbheight=992 
bcm2709.boardrev=0xa02082 bcm2709.serial=0xda72ae64 
smsc95xx.macaddr=B8:27:EB:72:AE:64 bcm2708_fb.fbswap=1 
bcm2709.uart_clock=48000000 vc_mem.mem_base=0x3dc00000 
vc_mem.mem_size=0x3f000000  dwc_otg.lpm_enable=0 console=tty1 
root=/dev/mmcblk0p3 rootfstype=ext4 elevator=deadline rootwait 
ipv6_disable=1
[    0.001336] console [tty1] enabled
[    1.997145] 3f201000.uart: ttyAMA0 at MMIO 0x3f201000 (irq = 87, 
base_baud = 0) is a PL011 rev2
[    3.271457] systemd[1]: Created slice system-getty.slice.
[    3.276833] systemd[1]: Starting system-getty.slice.


Can anyone confirm this?
Thanks.

-- 
Jordi Sanfeliu
FIBRANET Network Services Provider
http://www.fibranet.cat