From e9c08f0d5737a988e735f7371bc0bffb343c485c Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 3 Nov 2009 14:42:12 +0000 Subject: ARM: S3C64XX: Redo voltage ranges for cpufreq The documentation for the S3C6410 CPU voltage scaling is rather unclear, with omitted values for several speed settings. Originally the code was using only quoted values, resulting in some fairly odd settings. The S3C6410 is also unusual in that the both the maximum and minimum voltages quoted scale as the frequency rises, rather than just the minimum voltage. Clean this up a bit by always using the specified typical settings as the minimum voltage (ignoring any specified minimum voltage) in order to avoid running near the edge of the processor capabilities. Also use the next quoted maximum voltages rather than the typical voltages where no maximum voltage is quoted, allowing operation on a greater range of systems. Signed-off-by: Mark Brown Signed-off-by: Ben Dooks --- arch/arm/plat-s3c64xx/cpufreq.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) (limited to 'arch/arm/plat-s3c64xx') diff --git a/arch/arm/plat-s3c64xx/cpufreq.c b/arch/arm/plat-s3c64xx/cpufreq.c index 61276bf7392..74c0e8347de 100644 --- a/arch/arm/plat-s3c64xx/cpufreq.c +++ b/arch/arm/plat-s3c64xx/cpufreq.c @@ -28,11 +28,10 @@ struct s3c64xx_dvfs { }; static struct s3c64xx_dvfs s3c64xx_dvfs_table[] = { - [0] = { 1000000, 1000000 }, - [1] = { 1000000, 1050000 }, - [2] = { 1050000, 1100000 }, - [3] = { 1050000, 1150000 }, - [4] = { 1250000, 1350000 }, + [0] = { 1000000, 1150000 }, + [1] = { 1050000, 1150000 }, + [2] = { 1100000, 1150000 }, + [3] = { 1200000, 1350000 }, }; static struct cpufreq_frequency_table s3c64xx_freq_table[] = { @@ -42,9 +41,9 @@ static struct cpufreq_frequency_table s3c64xx_freq_table[] = { { 1, 266000 }, { 2, 333000 }, { 2, 400000 }, - { 3, 532000 }, - { 3, 533000 }, - { 4, 667000 }, + { 2, 532000 }, + { 2, 533000 }, + { 3, 667000 }, { 0, CPUFREQ_TABLE_END }, }; #endif -- cgit v1.2.3-70-g09d2