From: 黄涛 <huangtao@rock-chips.com>
Date: Wed, 11 Jun 2014 03:29:12 +0000 (+0800)
Subject: ARM: rockchip: rk3288: power up/down GPU domain wait 1us
X-Git-Tag: firefly_0821_release~5154
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=44099f09d993215a64acfe1240d1c115dd7d38a0;p=firefly-linux-kernel-4.4.55.git

ARM: rockchip: rk3288: power up/down GPU domain wait 1us

Default wait 1ms, which block system too long.
---

diff --git a/arch/arm/mach-rockchip/rk3288.c b/arch/arm/mach-rockchip/rk3288.c
index bb0935cbb9c3..8232c3ce494c 100644
--- a/arch/arm/mach-rockchip/rk3288.c
+++ b/arch/arm/mach-rockchip/rk3288.c
@@ -153,6 +153,10 @@ static void __init rk3288_dt_map_io(void)
 	writel_relaxed(1, RK3288_TIMER7_VIRT + 0x10);
 	dsb();
 
+	/* power up/down GPU domain wait 1us */
+	writel_relaxed(24, RK_PMU_VIRT + RK3288_PMU_GPU_PWRDWN_CNT);
+	writel_relaxed(24, RK_PMU_VIRT + RK3288_PMU_GPU_PWRUP_CNT);
+
 	rk3288_boot_mode_init();
 }