diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-07 16:14:26 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-07 16:14:26 -0800 |
commit | 075cb105cb6dcda8a585989ebd4a71f0b3c33f3e (patch) | |
tree | 288b8ceb07f2f9780c572ca8c15b9d3096928ba0 /arch/arm/mach-omap2/clkt_dpll.c | |
parent | a3fbbde70a0cec017f2431e8f8de208708c76acc (diff) | |
parent | d30cc16c8e48368e0518f4975a78711e53e14a0f (diff) |
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (31 commits)
ARM: OMAP: Fix export.h or module.h includes
ARM: OMAP: omap_device: Include linux/export.h
ARM: OMAP2: Fix H4 matrix keyboard warning
ARM: OMAP1: Remove unused omap-alsa.h
ARM: OMAP1: Fix warnings about enabling 32 KiHz timer
ARM: OMAP2+: timer: Remove omap_device_pm_latency
ARM: OMAP2+: clock data: Remove redundant timer clkdev
ARM: OMAP: Devkit8000: Remove double omap_mux_init_gpio
ARM: OMAP: usb: musb: OMAP: Delete unused function
MAINTAINERS: Update linux-omap git repository
ARM: OMAP: change get_context_loss_count ret value to int
ARM: OMAP4: hsmmc: configure SDMMC1_DR0 properly
ARM: OMAP4: hsmmc: Fix Pbias configuration on regulator OFF
ARM: OMAP3: hwmod: fix variant registration and remove SmartReflex from common list
ARM: OMAP: I2C: Fix omap_register_i2c_bus() return value on success
ARM: OMAP: dmtimer: Include linux/module.h
ARM: OMAP2+: l3-noc: Include linux/module.h
ARM: OMAP2+: devices: Fixes for McPDM
ARM: OMAP: Fix errors and warnings when building for one board
ARM: OMAP3: PM: restrict erratum i443 handling to OMAP3430 only
...
Diffstat (limited to 'arch/arm/mach-omap2/clkt_dpll.c')
-rw-r--r-- | arch/arm/mach-omap2/clkt_dpll.c | 51 |
1 files changed, 35 insertions, 16 deletions
diff --git a/arch/arm/mach-omap2/clkt_dpll.c b/arch/arm/mach-omap2/clkt_dpll.c index bcffee001bfa..e069a9be93df 100644 --- a/arch/arm/mach-omap2/clkt_dpll.c +++ b/arch/arm/mach-omap2/clkt_dpll.c @@ -46,10 +46,19 @@ (DPLL_SCALE_FACTOR / DPLL_SCALE_BASE)) /* DPLL valid Fint frequency band limits - from 34xx TRM Section 4.7.6.2 */ -#define DPLL_FINT_BAND1_MIN 750000 -#define DPLL_FINT_BAND1_MAX 2100000 -#define DPLL_FINT_BAND2_MIN 7500000 -#define DPLL_FINT_BAND2_MAX 21000000 +#define OMAP3430_DPLL_FINT_BAND1_MIN 750000 +#define OMAP3430_DPLL_FINT_BAND1_MAX 2100000 +#define OMAP3430_DPLL_FINT_BAND2_MIN 7500000 +#define OMAP3430_DPLL_FINT_BAND2_MAX 21000000 + +/* + * DPLL valid Fint frequency range for OMAP36xx and OMAP4xxx. + * From device data manual section 4.3 "DPLL and DLL Specifications". + */ +#define OMAP3PLUS_DPLL_FINT_JTYPE_MIN 500000 +#define OMAP3PLUS_DPLL_FINT_JTYPE_MAX 2500000 +#define OMAP3PLUS_DPLL_FINT_MIN 32000 +#define OMAP3PLUS_DPLL_FINT_MAX 52000000 /* _dpll_test_fint() return codes */ #define DPLL_FINT_UNDERFLOW -1 @@ -71,33 +80,43 @@ static int _dpll_test_fint(struct clk *clk, u8 n) { struct dpll_data *dd; - long fint; + long fint, fint_min, fint_max; int ret = 0; dd = clk->dpll_data; /* DPLL divider must result in a valid jitter correction val */ fint = clk->parent->rate / n; - if (fint < DPLL_FINT_BAND1_MIN) { + if (cpu_is_omap24xx()) { + /* Should not be called for OMAP2, so warn if it is called */ + WARN(1, "No fint limits available for OMAP2!\n"); + return DPLL_FINT_INVALID; + } else if (cpu_is_omap3430()) { + fint_min = OMAP3430_DPLL_FINT_BAND1_MIN; + fint_max = OMAP3430_DPLL_FINT_BAND2_MAX; + } else if (dd->flags & DPLL_J_TYPE) { + fint_min = OMAP3PLUS_DPLL_FINT_JTYPE_MIN; + fint_max = OMAP3PLUS_DPLL_FINT_JTYPE_MAX; + } else { + fint_min = OMAP3PLUS_DPLL_FINT_MIN; + fint_max = OMAP3PLUS_DPLL_FINT_MAX; + } + + if (fint < fint_min) { pr_debug("rejecting n=%d due to Fint failure, " "lowering max_divider\n", n); dd->max_divider = n; ret = DPLL_FINT_UNDERFLOW; - - } else if (fint > DPLL_FINT_BAND1_MAX && - fint < DPLL_FINT_BAND2_MIN) { - - pr_debug("rejecting n=%d due to Fint failure\n", n); - ret = DPLL_FINT_INVALID; - - } else if (fint > DPLL_FINT_BAND2_MAX) { - + } else if (fint > fint_max) { pr_debug("rejecting n=%d due to Fint failure, " "boosting min_divider\n", n); dd->min_divider = n; ret = DPLL_FINT_INVALID; - + } else if (cpu_is_omap3430() && fint > OMAP3430_DPLL_FINT_BAND1_MAX && + fint < OMAP3430_DPLL_FINT_BAND2_MIN) { + pr_debug("rejecting n=%d due to Fint failure\n", n); + ret = DPLL_FINT_INVALID; } return ret; |