From: 陈亮 <cl@rock-chips.com>
Date: Thu, 20 Mar 2014 16:15:08 +0000 (-0700)
Subject: rk3288: add vepu node for dvfs
X-Git-Tag: firefly_0821_release~5946
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9cf11a63755f634a997fd0c1258dae757ec555f0;p=firefly-linux-kernel-4.4.55.git

rk3288: add vepu node for dvfs
---

diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index a05b749a6fb0..63d10981d58d 100755
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -751,6 +751,19 @@
 					status = "disable";
 				};
 			};
+
+			pd_vpu {
+				clk_ddr_vepu_table:
+				clk_vepu {
+					operating-points = <
+						/* KHz    uV */
+						200000 1200000
+						300000 1200000
+						400000 1200000
+						>;
+					status = "okay";
+				};
+			};
 		};
 
 		vd_gpu:
diff --git a/drivers/cpufreq/rockchip-cpufreq.c b/drivers/cpufreq/rockchip-cpufreq.c
index f33e64e369ff..60dda48c6f76 100644
--- a/drivers/cpufreq/rockchip-cpufreq.c
+++ b/drivers/cpufreq/rockchip-cpufreq.c
@@ -74,6 +74,7 @@ static DEFINE_MUTEX(cpufreq_mutex);
 static bool gpu_is_mali400;
 struct dvfs_node *clk_cpu_dvfs_node = NULL;
 struct dvfs_node *clk_gpu_dvfs_node = NULL;
+struct dvfs_node *clk_vepu_dvfs_node = NULL;
 /*******************************************************/
 static unsigned int cpufreq_get_rate(unsigned int cpu)
 {
@@ -366,7 +367,6 @@ static int cpufreq_scale_rate_for_dvfs(struct clk *clk, unsigned long rate)
 	
 }
 
-
 static int cpufreq_init_cpu0(struct cpufreq_policy *policy)
 {
 	unsigned int i;
@@ -379,6 +379,12 @@ static int cpufreq_init_cpu0(struct cpufreq_policy *policy)
 			dvfs_clk_enable_limit(clk_gpu_dvfs_node, 133000000, 600000000);	
 	}
 
+	clk_vepu_dvfs_node = clk_get_dvfs_node("clk_vepu");
+	if (clk_vepu_dvfs_node){
+		clk_enable_dvfs(clk_vepu_dvfs_node);
+		dvfs_clk_set_rate(clk_vepu_dvfs_node, 297000000);
+	}
+
 	clk_cpu_dvfs_node = clk_get_dvfs_node("clk_core");
 	if (!clk_cpu_dvfs_node){
 		return -EINVAL;