diff mbox series

[U-Boot,06/11] tegra: Add a delay in clock_start_periph_pll()

Message ID 20181227202446.229042-7-sjg@chromium.org
State Accepted
Commit c9d7542bf3014f46ce55e212122f02b77dd651a1
Delegated to: Tom Warren
Headers show
Series sound: Add sound support for Nyan | expand

Commit Message

Simon Glass Dec. 27, 2018, 8:24 p.m. UTC 
This function enables a peripheral clock and then immediately sets its
divider. Add a delay to allow the clock to settle first. This matches the
delay in other places which do a similar thing.

Without this, the I2S device on Nyan does not init properly.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

 arch/arm/mach-tegra/clock.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/arch/arm/mach-tegra/clock.c b/arch/arm/mach-tegra/clock.c
index 096330748f2..dc5f16b41b6 100644
--- a/arch/arm/mach-tegra/clock.c
+++ b/arch/arm/mach-tegra/clock.c
@@ -477,6 +477,7 @@  unsigned clock_start_periph_pll(enum periph_id periph_id,
 
 	reset_set_enable(periph_id, 1);
 	clock_enable(periph_id);
+	udelay(2);
 
 	effective_rate = clock_adjust_periph_pll_div(periph_id, parent, rate,
 						 NULL);