diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-01 11:31:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-01 11:31:31 -0700 |
| commit | 61434392f797cf89872bda87dff8b3395edf4108 (patch) | |
| tree | 489e344b0a5142dd4dc74ba3f4972592b90bacec /arch/mips/au1000/common/time.c | |
| parent | 0e45adb8f5371f3d20a6df21cd13ce32fbe9bf15 (diff) | |
| parent | f9e8b782608021c0cbd936923cc0e509521b594d (diff) | |
Merge branch 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/ralf/upstream-linus
* 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/ralf/upstream-linus:
[MIPS] XSS1500: Fix compilation
[MIPS] Bigsur: make defconfig more useful.
[MIPS] Alchemy: work around clock misdetection on early Au1000
[MIPS] Add missing 4KEC TLB refill handler
[MIPS] BCM1480: Fix PCI/HT IO access
[MIPS] Fix the installation condition of MIPS clocksource
[MIPS] Check for GCC r10k-cache-barrier support
[MIPS] I8253: Export i2853_lock to modules.
[MIPS] VPE loader: Check result of memory allocation.
Diffstat (limited to 'arch/mips/au1000/common/time.c')
| -rw-r--r-- | arch/mips/au1000/common/time.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/arch/mips/au1000/common/time.c b/arch/mips/au1000/common/time.c index f113b512d7b..e122bbc6cd8 100644 --- a/arch/mips/au1000/common/time.c +++ b/arch/mips/au1000/common/time.c @@ -209,18 +209,22 @@ unsigned long cal_r4koff(void) while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_C1S); au_writel(0, SYS_TOYWRITE); while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_C1S); + } else + no_au1xxx_32khz = 1; - cpu_speed = (au_readl(SYS_CPUPLL) & 0x0000003f) * - AU1000_SRC_CLK; - } - else { - /* The 32KHz oscillator isn't running, so assume there - * isn't one and grab the processor speed from the PLL. - * NOTE: some old silicon doesn't allow reading the PLL. - */ + /* + * On early Au1000, sys_cpupll was write-only. Since these + * silicon versions of Au1000 are not sold by AMD, we don't bend + * over backwards trying to determine the frequency. + */ + if (cur_cpu_spec[0]->cpu_pll_wo) +#ifdef CONFIG_SOC_AU1000_FREQUENCY + cpu_speed = CONFIG_SOC_AU1000_FREQUENCY; +#else + cpu_speed = 396000000; +#endif + else cpu_speed = (au_readl(SYS_CPUPLL) & 0x0000003f) * AU1000_SRC_CLK; - no_au1xxx_32khz = 1; - } mips_hpt_frequency = cpu_speed; // Equation: Baudrate = CPU / (SD * 2 * CLKDIV * 16) set_au1x00_uart_baud_base(cpu_speed / (2 * ((int)(au_readl(SYS_POWERCTRL)&0x03) + 2) * 16)); |