From: Chen Liang <cl@rock-chips.com>
Date: Tue, 10 Nov 2015 09:53:25 +0000 (+0800)
Subject: ARM: rockchip: rk3228: implement function rk3228_restart
X-Git-Tag: firefly_0821_release~3623
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d91ca21f9ac06733b3895deab952e016ed20c2a1;p=firefly-linux-kernel-4.4.55.git

ARM: rockchip: rk3228: implement function rk3228_restart

Change-Id: If6c5630a1ea9a8ebb95f527bd5d1aff082da079f
Signed-off-by: Chen Liang <cl@rock-chips.com>
---

diff --git a/arch/arm/mach-rockchip/rk3228.c b/arch/arm/mach-rockchip/rk3228.c
index 12f0886189d3..bd5c434f9214 100644
--- a/arch/arm/mach-rockchip/rk3228.c
+++ b/arch/arm/mach-rockchip/rk3228.c
@@ -104,6 +104,22 @@ static void __init rk3228_init_late(void)
 
 static void rk3228_restart(char mode, const char *cmd)
 {
+	u32 boot_flag, boot_mode;
+
+	rockchip_restart_get_boot_mode(cmd, &boot_flag, &boot_mode);
+
+	/* for loader */
+	writel_relaxed(boot_flag, RK_PMU_VIRT + RK3228_GRF_OS_REG0);
+	/* for linux */
+	writel_relaxed(boot_mode, RK_PMU_VIRT + RK3228_GRF_OS_REG1);
+
+	dsb();
+
+	/* pll enter slow mode */
+	writel_relaxed(0x11010000, RK_CRU_VIRT + RK3228_CRU_MODE_CON);
+	dsb();
+	writel_relaxed(0xeca8, RK_CRU_VIRT + RK3228_CRU_GLB_SRST_SND_VALUE);
+	dsb();
 }
 
 DT_MACHINE_START(RK3228_DT, "Rockchip RK3228")