From: Philipp Zabel <p.zabel@pengutronix.de>
Date: Mon, 9 Oct 2017 12:03:31 +0200
Subject: drm/etnaviv: remove unnecessary clock stabilization delay
Git-commit: 8272170f7da34e2554bed10ab76582094ea6816d
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
There is no reason to wait for clock stabilization here, as the clock
framework guarantees that PLL clock sources are stable before clk_enable
returns.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 3 ---
1 file changed, 3 deletions(-)
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -444,9 +444,6 @@ static int etnaviv_hw_reset(struct etnav
control = VIVS_HI_CLOCK_CONTROL_FSCALE_VAL(fscale);
etnaviv_gpu_load_clock(gpu, control);
- /* Wait for stable clock. Vivante's code waited for 1ms */
- usleep_range(1000, 10000);
-
/* isolate the GPU. */
control |= VIVS_HI_CLOCK_CONTROL_ISOLATE_GPU;
gpu_write(gpu, VIVS_HI_CLOCK_CONTROL, control);