• Simon Horman's avatar
    ARM: shmobile: r8a7779: Correct TMU clock support again · f9047306
    Simon Horman authored
    After discussion on the linux-sh mailing list and reference to the
    hardware documentation it appears that 'TMU00', 'TMU01' and 'TMU02'
    use a common clock.
    
    The sh_tmu.1 portion of this change resolves a regression introduced in
    58079fa7 (ARM: shmobile: r8a7779: Correct
    TMU clock support) and fixes a regression introduced by that patch. That
    patch is queued up for v3.9.
    
    ...
    hub 4-0:1.0: USB hub found
    hub 4-0:1.0: 2 ports detected
    INFO: rcu_sched self-detected stall on CPUINFO: rcu_sched detected stalls on
    +CPUs/tasks: { 1} (detected by 2, t=279640 jiffies, g=4294967052, c=4294967051,
    +q=38)
    Task dump for CPU 1:
    swapper/0       R running      0     1      0 0x00000002
    [<c02b8f5c>] (__schedule+0x1b0/0x4c0) from [<c013c590>] (__loop_delay+0x4/0xc)
    
     { 1}  (t=279640 jiffies g=4294967052 c=4294967052 q=37)
    [<c000ef9c>] (unwind_backtrace+0x0/0xf8) from [<c0068488>]
    +(rcu_check_callbacks+0x218/0x6b8)
    [<c0068488>] (rcu_check_callbacks+0x218/0x6b8) from [<c0026774>]
    +(update_process_times+0x38/0x4c)
    [<c0026774>] (update_process_times+0x38/0x4c) from [<c00569e0>]
    +(tick_nohz_handler+0xb4/0x11c)
    [<c00569e0>] (tick_nohz_handler+0xb4/0x11c) from [<c000e518>]
    +(twd_handler+0x34/0x44)
    [<c000e518>] (twd_handler+0x34/0x44) from [<c0063484>]
    +(handle_percpu_devid_irq+0x68/0x80)
    [<c0063484>] (handle_percpu_devid_irq+0x68/0x80) from [<c005febc>]
    +(generic_handle_irq+0x20/0x30)
    [<c005febc>] (generic_handle_irq+0x20/0x30) from [<c000a5ec>]
    +(handle_IRQ+0x40/0x90)
    [<c000a5ec>] (handle_IRQ+0x40/0x90) from [<c000934c>] (gic_handle_irq+0x2c/0x5c)
    [<c000934c>] (gic_handle_irq+0x2c/0x5c) from [<c0009a40>] (__irq_svc+0x40/0x50)
    Exception stack(0xef03ddf8 to 0xef03de40)
    dde0:                                                       000001c1 ffffffff
    de00: 000001d8 01bf01bf ef35ec40 ef35e800 ef35ec6c 0000002b ef35ec68 c013c560
    de20: c0392994 60000113 00000000 ef03de40 c01a5d40 c013c590 20000113 ffffffff
    [<c0009a40>] (__irq_svc+0x40/0x50) from [<c013c590>] (__loop_delay+0x4/0xc)
    
    Cc: Denis Oliver Kropp <dok@directfb.org>
    Cc: Magnus Damm <damm@opensource.se>
    Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
    Cc: Paul Mundt <lethal@linux-sh.org>
    Signed-off-by: default avatarSimon Horman <horms+renesas@verge.net.au>
    f9047306
clock-r8a7779.c 7.31 KB