From c9d7542bf3014f46ce55e212122f02b77dd651a1 Mon Sep 17 00:00:00 2001 From: Simon Glass <sjg@chromium.org> Date: Mon, 1 Apr 2019 13:38:38 -0700 Subject: [PATCH] tegra: Add a delay in clock_start_periph_pll() 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> Signed-off-by: Tom Warren <twarren@nvidia.com> --- arch/arm/mach-tegra/clock.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-tegra/clock.c b/arch/arm/mach-tegra/clock.c index 096330748f..dc5f16b41b 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); -- 2.39.5