diff options
Diffstat (limited to 'drivers/ssb')
| -rw-r--r-- | drivers/ssb/driver_chipcommon_pmu.c | 48 | ||||
| -rw-r--r-- | drivers/ssb/driver_mipscore.c | 3 | ||||
| -rw-r--r-- | drivers/ssb/main.c | 3 | ||||
| -rw-r--r-- | drivers/ssb/ssb_private.h | 4 |
4 files changed, 53 insertions, 5 deletions
diff --git a/drivers/ssb/driver_chipcommon_pmu.c b/drivers/ssb/driver_chipcommon_pmu.c index e5a2e0e9bc1..b58fef780ea 100644 --- a/drivers/ssb/driver_chipcommon_pmu.c +++ b/drivers/ssb/driver_chipcommon_pmu.c @@ -13,6 +13,9 @@ #include <linux/ssb/ssb_driver_chipcommon.h> #include <linux/delay.h> #include <linux/export.h> +#ifdef CONFIG_BCM47XX +#include <asm/mach-bcm47xx/nvram.h> +#endif #include "ssb_private.h" @@ -92,10 +95,6 @@ static void ssb_pmu0_pllinit_r0(struct ssb_chipcommon *cc, u32 pmuctl, tmp, pllctl; unsigned int i; - if ((bus->chip_id == 0x5354) && !crystalfreq) { - /* The 5354 crystal freq is 25MHz */ - crystalfreq = 25000; - } if (crystalfreq) e = pmu0_plltab_find_entry(crystalfreq); if (!e) @@ -321,7 +320,11 @@ static void ssb_pmu_pll_init(struct ssb_chipcommon *cc) u32 crystalfreq = 0; /* in kHz. 0 = keep default freq. */ if (bus->bustype == SSB_BUSTYPE_SSB) { - /* TODO: The user may override the crystal frequency. */ +#ifdef CONFIG_BCM47XX + char buf[20]; + if (nvram_getenv("xtalfreq", buf, sizeof(buf)) >= 0) + crystalfreq = simple_strtoul(buf, NULL, 0); +#endif } switch (bus->chip_id) { @@ -330,7 +333,11 @@ static void ssb_pmu_pll_init(struct ssb_chipcommon *cc) ssb_pmu1_pllinit_r0(cc, crystalfreq); break; case 0x4328: + ssb_pmu0_pllinit_r0(cc, crystalfreq); + break; case 0x5354: + if (crystalfreq == 0) + crystalfreq = 25000; ssb_pmu0_pllinit_r0(cc, crystalfreq); break; case 0x4322: @@ -607,3 +614,34 @@ void ssb_pmu_set_ldo_paref(struct ssb_chipcommon *cc, bool on) EXPORT_SYMBOL(ssb_pmu_set_ldo_voltage); EXPORT_SYMBOL(ssb_pmu_set_ldo_paref); + +u32 ssb_pmu_get_cpu_clock(struct ssb_chipcommon *cc) +{ + struct ssb_bus *bus = cc->dev->bus; + + switch (bus->chip_id) { + case 0x5354: + /* 5354 chip uses a non programmable PLL of frequency 240MHz */ + return 240000000; + default: + ssb_printk(KERN_ERR PFX + "ERROR: PMU cpu clock unknown for device %04X\n", + bus->chip_id); + return 0; + } +} + +u32 ssb_pmu_get_controlclock(struct ssb_chipcommon *cc) +{ + struct ssb_bus *bus = cc->dev->bus; + + switch (bus->chip_id) { + case 0x5354: + return 120000000; + default: + ssb_printk(KERN_ERR PFX + "ERROR: PMU controlclock unknown for device %04X\n", + bus->chip_id); + return 0; + } +} diff --git a/drivers/ssb/driver_mipscore.c b/drivers/ssb/driver_mipscore.c index ced50156859..7e2ddc042f5 100644 --- a/drivers/ssb/driver_mipscore.c +++ b/drivers/ssb/driver_mipscore.c @@ -208,6 +208,9 @@ u32 ssb_cpu_clock(struct ssb_mipscore *mcore) struct ssb_bus *bus = mcore->dev->bus; u32 pll_type, n, m, rate = 0; + if (bus->chipco.capabilities & SSB_CHIPCO_CAP_PMU) + return ssb_pmu_get_cpu_clock(&bus->chipco); + if (bus->extif.dev) { ssb_extif_get_clockcontrol(&bus->extif, &pll_type, &n, &m); } else if (bus->chipco.dev) { diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c index bb6317fb925..2a0a1b99e0e 100644 --- a/drivers/ssb/main.c +++ b/drivers/ssb/main.c @@ -1094,6 +1094,9 @@ u32 ssb_clockspeed(struct ssb_bus *bus) u32 plltype; u32 clkctl_n, clkctl_m; + if (bus->chipco.capabilities & SSB_CHIPCO_CAP_PMU) + return ssb_pmu_get_controlclock(&bus->chipco); + if (ssb_extif_available(&bus->extif)) ssb_extif_get_clockcontrol(&bus->extif, &plltype, &clkctl_n, &clkctl_m); diff --git a/drivers/ssb/ssb_private.h b/drivers/ssb/ssb_private.h index 77653014db0..a305550b4b6 100644 --- a/drivers/ssb/ssb_private.h +++ b/drivers/ssb/ssb_private.h @@ -207,4 +207,8 @@ static inline void b43_pci_ssb_bridge_exit(void) } #endif /* CONFIG_SSB_B43_PCI_BRIDGE */ +/* driver_chipcommon_pmu.c */ +extern u32 ssb_pmu_get_cpu_clock(struct ssb_chipcommon *cc); +extern u32 ssb_pmu_get_controlclock(struct ssb_chipcommon *cc); + #endif /* LINUX_SSB_PRIVATE_H_ */ |