From: Tomohito Esaki <etom@igel.co.jp>
Date: Tue, 27 Jan 2015 05:28:52 +0000 (+0900)
Subject: r8a7791: PM: add power on SGX in pm init
X-Git-Tag: submit/tizen_ivi/20150202.052133~2
X-Git-Url: http://review.tizen.org/git/?p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git;a=commitdiff_plain;h=595d97ea8978beb3d8dfe21e117e281db75e13e5

r8a7791: PM: add power on SGX in pm init

Turn on power to the GPU by default.

Change-Id: I80e40f172649de3a2d82d4a62801cc23a05b5d42
---

diff --git a/arch/arm/mach-shmobile/pm-r8a7791.c b/arch/arm/mach-shmobile/pm-r8a7791.c
index 25f107b..05400b1 100644
--- a/arch/arm/mach-shmobile/pm-r8a7791.c
+++ b/arch/arm/mach-shmobile/pm-r8a7791.c
@@ -70,4 +70,10 @@ void __init r8a7791_pm_init(void)
 
 	r8a7791_sysc_init();
 	shmobile_smp_apmu_suspend_init();
+
+        /* WORKARROUND: power on 3DG */
+	{
+	    void __iomem *base = rcar_sysc_init(0xe6180000);
+	    iowrite32(0x01, base + 0xcc); /* 0xCC: PWRONCR2 */
+	}
 }