diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2019-08-29 13:25:01 +0200 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2019-09-02 12:09:03 +0200 |
| commit | fea3ac55e112ee52feba03c48c182ab6d0ad8e92 (patch) | |
| tree | bbd161c23f161286ded756445f511303ae496e0c /drivers/mfd | |
| parent | mfd: intel-lpss: Use MODULE_SOFTDEP() instead of implicit request (diff) | |
| download | linux-fea3ac55e112ee52feba03c48c182ab6d0ad8e92.tar.xz linux-fea3ac55e112ee52feba03c48c182ab6d0ad8e92.zip | |
mfd: db8500-prcmu: Support the higher DB8520 ARMSS
The DB8520 used in a lot of Samsung phones has a slightly higher
maximum ARMSS frequency than the DB8500. In order to not confuse
the OPP framework and cpufreq, make sure the PRCMU driver
returns the correct frequency.
Cc: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/db8500-prcmu.c | 40 |
1 files changed, 35 insertions, 5 deletions
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c index 0f459c246634..0e019cc5da42 100644 --- a/drivers/mfd/db8500-prcmu.c +++ b/drivers/mfd/db8500-prcmu.c @@ -1695,21 +1695,41 @@ static long round_clock_rate(u8 clock, unsigned long rate) return rounded_rate; } -static const unsigned long armss_freqs[] = { +static const unsigned long db8500_armss_freqs[] = { 200000000, 400000000, 800000000, 998400000 }; +/* The DB8520 has slightly higher ARMSS max frequency */ +static const unsigned long db8520_armss_freqs[] = { + 200000000, + 400000000, + 800000000, + 1152000000 +}; + + + static long round_armss_rate(unsigned long rate) { unsigned long freq = 0; + const unsigned long *freqs; + int nfreqs; int i; + if (fw_info.version.project == PRCMU_FW_PROJECT_U8520) { + freqs = db8520_armss_freqs; + nfreqs = ARRAY_SIZE(db8520_armss_freqs); + } else { + freqs = db8500_armss_freqs; + nfreqs = ARRAY_SIZE(db8500_armss_freqs); + } + /* Find the corresponding arm opp from the cpufreq table. */ - for (i = 0; i < ARRAY_SIZE(armss_freqs); i++) { - freq = armss_freqs[i]; + for (i = 0; i < nfreqs; i++) { + freq = freqs[i]; if (rate <= freq) break; } @@ -1854,11 +1874,21 @@ static int set_armss_rate(unsigned long rate) { unsigned long freq; u8 opps[] = { ARM_EXTCLK, ARM_50_OPP, ARM_100_OPP, ARM_MAX_OPP }; + const unsigned long *freqs; + int nfreqs; int i; + if (fw_info.version.project == PRCMU_FW_PROJECT_U8520) { + freqs = db8520_armss_freqs; + nfreqs = ARRAY_SIZE(db8520_armss_freqs); + } else { + freqs = db8500_armss_freqs; + nfreqs = ARRAY_SIZE(db8500_armss_freqs); + } + /* Find the corresponding arm opp from the cpufreq table. */ - for (i = 0; i < ARRAY_SIZE(armss_freqs); i++) { - freq = armss_freqs[i]; + for (i = 0; i < nfreqs; i++) { + freq = freqs[i]; if (rate == freq) break; } |