Hi all,
I'm working with PQ2FADS based board. When I started to use new 2.6.26
kernel my SMC1 console stopped working. I know that the cpm_uart
driver has been changed and the DTS file needs updating. Unfortunately
I failed to get it running. Could somebody help me solve this problem?
====
The cpm node of the DTS file:
.............................................
[EMAIL PROTECTED] {
#address-cells = <1>;
#size-cells = <1>;
#interrupt-cells = <2>;
compatible = "fsl,mpc8280-cpm", "fsl,cpm2";
reg = <119c0 30>;
ranges;
muram {
#address-cells = <1>;
#size-cells = <1>;
ranges = <0 0 10000>;
[EMAIL PROTECTED] {
compatible = "fsl,cpm-muram-data";
reg = <0 2000 9800 800>;
};
};
[EMAIL PROTECTED] {
compatible = "fsl,cpm-brg", "fsl,cpm2-brg";
reg = <119f0 10 115f0 10>;
};
smc1: [EMAIL PROTECTED] {
device_type = "serial";
compatible = "fsl,cpm2-smc-uart";
reg = <11a80 20 87fc 2>;
interrupts = <4 8>;
interrupt-parent = <&PIC>;
fsl,cpm-brg = <7>;
fsl,cpm-command = <1d000000>;
};
};
.............................................
chosen {
linux,stdout-path = &smc1;
bootargs = "console=ttyCPM0";
};
.............................................
The early debuging output:
Xid mach(): done
MMU:enter
MMU:hw init
MMU:mapin
MMU:setio
MMU:exit
Using Electronic Devices SPC826 (M82) machine description
Linux version 2.6.26 ([EMAIL PROTECTED]) (gcc version 4.1.2) #83 Thu Jul 24
14:45:07 MSD 2008
console [udbg0] enabled
Entering add_active_range(0, 0, 4096) 0 entries of 256 used
setup_arch: bootmem
spc826_setup_arch()
spc826_setup_arch(), finish
arch: exit
Top of RAM: 0x1000000, Total RAM: 0x1000000
Memory hole size: 0MB
Zone PFN ranges:
DMA 0 -> 4096
Normal 4096 -> 4096
Movable zone start PFN for each node
early_node_map[1] active PFN ranges
0: 0 -> 4096
On node 0 totalpages: 4096
DMA zone: 32 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 4064 pages, LIFO batch:0
Normal zone: 0 pages used for memmap
Movable zone: 0 pages used for memmap
Built 1 zonelists in Zone order, mobility grouping off. Total pages: 4064
Kernel command line: console=ttyCPM0
PID hash table entries: 64 (order: 6, 256 bytes)
time_init: decrementer frequency = 16.500000 MHz
time_init: processor frequency = 264.000000 MHz
clocksource: timebase mult[f26c9b2] shift[22] registered
clockevent: decrementer mult[439] shift[16] cpu[0]
Console: colour dummy device 80x25
====
Thanks!
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