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rk30:sdk: fix dvfs bug: when cpu frequency table all freqs smaller than default freq...
author
chenxing
<chenxing@rock-chips.com>
Wed, 25 Apr 2012 14:10:20 +0000
(22:10 +0800)
committer
chenxing
<chenxing@rock-chips.com>
Wed, 25 Apr 2012 14:10:20 +0000
(22:10 +0800)
arch/arm/mach-rk30/dvfs.c
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diff --git
a/arch/arm/mach-rk30/dvfs.c
b/arch/arm/mach-rk30/dvfs.c
index 1f3b9ac8bc85dc1c64b26c2e10117b93f372e04e..54d2b8cbcbaa664cb3e67f845270185d612197a5 100755
(executable)
--- a/
arch/arm/mach-rk30/dvfs.c
+++ b/
arch/arm/mach-rk30/dvfs.c
@@
-314,6
+314,18
@@
int clk_enable_dvfs(struct clk *clk)
\r
dvfs_clk->set_freq = dvfs_clk_get_rate_kz(clk);
\r
// DVFS_DBG("%s ,%s get freq%u!\n",__func__,dvfs_clk->name,dvfs_clk->set_freq);
\r
\r
dvfs_clk->set_freq = dvfs_clk_get_rate_kz(clk);
\r
// DVFS_DBG("%s ,%s get freq%u!\n",__func__,dvfs_clk->name,dvfs_clk->set_freq);
\r
+
\r
+ if (dvfs_clk_get_ref_volt(dvfs_clk, dvfs_clk->set_freq, &clk_fv)) {
\r
+ if (dvfs_clk->dvfs_table[0].frequency == CPUFREQ_TABLE_END) {
\r
+ DVFS_ERR("%s table empty\n", __func__);
\r
+ dvfs_clk->enable_dvfs = 0;
\r
+ return -1;
\r
+ } else {
\r
+ DVFS_ERR("WARNING: %s table all value are smaller than default, use default, just enable dvfs\n", __func__);
\r
+ dvfs_clk->enable_dvfs++;
\r
+ return 0;
\r
+ }
\r
+ }
\r
\r
if (dvfs_clk_get_ref_volt(dvfs_clk, dvfs_clk->set_freq, &clk_fv)) {
\r
dvfs_clk->enable_dvfs = 0;
\r
\r
if (dvfs_clk_get_ref_volt(dvfs_clk, dvfs_clk->set_freq, &clk_fv)) {
\r
dvfs_clk->enable_dvfs = 0;
\r