From d929b2b7464f95ec01e47f560b1e687482ba8929 Mon Sep 17 00:00:00 2001 From: Julien Panis Date: Mon, 21 Aug 2023 16:24:18 +0200 Subject: 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 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 --- drivers/bus/ti-sysc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/bus') 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); -- cgit