diff options
| author | Julien Panis <jpanis@baylibre.com> | 2023-08-21 17:24:18 +0300 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2023-09-11 06:04:17 +0300 |
| commit | d929b2b7464f95ec01e47f560b1e687482ba8929 (patch) | |
| tree | 181c0a986f948b0512e0e1c131cb2cf96a9fd41b /drivers/bus | |
| parent | 0bb80ecc33a8fb5a682236443c1e740d5c917d1d (diff) | |
| download | linux-d929b2b7464f95ec01e47f560b1e687482ba8929.tar.xz | |
bus: ti-sysc: Use fsleep() instead of usleep_range() in sysc_reset()
The am335x-evm started producing boot errors because of subtle timing
changes:
Unhandled fault: external abort on non-linefetch (0x1008) at 0xf03c1010
...
sysc_reset from sysc_probe+0xf60/0x1514
sysc_probe from platform_probe+0x5c/0xbc
...
The fix consists in using the appropriate sleep function in sysc reset.
For flexible sleeping, fsleep is recommended. Here, sysc delay parameter
can take any value in [0 - 255] us range. As a result, fsleep() should
be used, calling udelay() for a sysc delay lower than 10 us.
Signed-off-by: Julien Panis <jpanis@baylibre.com>
Fixes: e709ed70d122 ("bus: ti-sysc: Fix missing reset delay handling")
Message-ID: <20230821-fix-ti-sysc-reset-v1-1-5a0a5d8fae55@baylibre.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'drivers/bus')
| -rw-r--r-- | drivers/bus/ti-sysc.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c index eb4e7bee1e20..cf09b6b88cf7 100644 --- a/drivers/bus/ti-sysc.c +++ b/drivers/bus/ti-sysc.c @@ -2150,8 +2150,7 @@ static int sysc_reset(struct sysc *ddata) } if (ddata->cfg.srst_udelay) - usleep_range(ddata->cfg.srst_udelay, - ddata->cfg.srst_udelay * 2); + fsleep(ddata->cfg.srst_udelay); if (ddata->post_reset_quirk) ddata->post_reset_quirk(ddata); |