diff options
| -rw-r--r-- | arch/arm/mach-omap2/gpmc-nand.c | 2 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/gpmc-onenand.c | 10 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/gpmc.c | 12 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/usb-tusb6010.c | 4 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/gpmc.h | 9 |
5 files changed, 24 insertions, 13 deletions
diff --git a/arch/arm/mach-omap2/gpmc-nand.c b/arch/arm/mach-omap2/gpmc-nand.c index 722209601927..2bb29c160702 100644 --- a/arch/arm/mach-omap2/gpmc-nand.c +++ b/arch/arm/mach-omap2/gpmc-nand.c @@ -41,7 +41,7 @@ static int omap2_nand_gpmc_retime(void) return 0; memset(&t, 0, sizeof(t)); - t.sync_clk = gpmc_round_ns_to_ticks(gpmc_nand_data->gpmc_t->sync_clk); + t.sync_clk = gpmc_nand_data->gpmc_t->sync_clk; t.cs_on = gpmc_round_ns_to_ticks(gpmc_nand_data->gpmc_t->cs_on); t.adv_on = gpmc_round_ns_to_ticks(gpmc_nand_data->gpmc_t->adv_on); diff --git a/arch/arm/mach-omap2/gpmc-onenand.c b/arch/arm/mach-omap2/gpmc-onenand.c index 7bb69220adfa..1db606ca007e 100644 --- a/arch/arm/mach-omap2/gpmc-onenand.c +++ b/arch/arm/mach-omap2/gpmc-onenand.c @@ -174,7 +174,7 @@ static int omap2_onenand_set_sync_mode(struct omap_onenand_platform_data *cfg, switch (freq) { case 83: - min_gpmc_clk_period = 12; /* 83 MHz */ + min_gpmc_clk_period = 12000; /* 83 MHz */ t_ces = 5; t_avds = 4; t_avdh = 2; @@ -183,7 +183,7 @@ static int omap2_onenand_set_sync_mode(struct omap_onenand_platform_data *cfg, t_rdyo = 9; break; case 66: - min_gpmc_clk_period = 15; /* 66 MHz */ + min_gpmc_clk_period = 15000; /* 66 MHz */ t_ces = 6; t_avds = 5; t_avdh = 2; @@ -192,7 +192,7 @@ static int omap2_onenand_set_sync_mode(struct omap_onenand_platform_data *cfg, t_rdyo = 11; break; default: - min_gpmc_clk_period = 18; /* 54 MHz */ + min_gpmc_clk_period = 18500; /* 54 MHz */ t_ces = 7; t_avds = 7; t_avdh = 7; @@ -271,8 +271,8 @@ static int omap2_onenand_set_sync_mode(struct omap_onenand_platform_data *cfg, t.wr_cycle = t.rd_cycle; if (cpu_is_omap34xx()) { t.wr_data_mux_bus = gpmc_ticks_to_ns(fclk_offset + - gpmc_ns_to_ticks(min_gpmc_clk_period + - t_rdyo)); + gpmc_ps_to_ticks(min_gpmc_clk_period + + t_rdyo * 1000)); t.wr_access = t.access; } } else { diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c index f46933bc9373..1b7b3e7d02f7 100644 --- a/arch/arm/mach-omap2/gpmc.c +++ b/arch/arm/mach-omap2/gpmc.c @@ -168,6 +168,16 @@ unsigned int gpmc_ns_to_ticks(unsigned int time_ns) return (time_ns * 1000 + tick_ps - 1) / tick_ps; } +unsigned int gpmc_ps_to_ticks(unsigned int time_ps) +{ + unsigned long tick_ps; + + /* Calculate in picosecs to yield more exact results */ + tick_ps = gpmc_get_fclk_period(); + + return (time_ps + tick_ps - 1) / tick_ps; +} + unsigned int gpmc_ticks_to_ns(unsigned int ticks) { return ticks * gpmc_get_fclk_period() / 1000; @@ -235,7 +245,7 @@ int gpmc_cs_calc_divider(int cs, unsigned int sync_clk) int div; u32 l; - l = sync_clk * 1000 + (gpmc_get_fclk_period() - 1); + l = sync_clk + (gpmc_get_fclk_period() - 1); div = l / gpmc_get_fclk_period(); if (div > 4) return -1; diff --git a/arch/arm/mach-omap2/usb-tusb6010.c b/arch/arm/mach-omap2/usb-tusb6010.c index 64a0112b70a5..1e998ea40951 100644 --- a/arch/arm/mach-omap2/usb-tusb6010.c +++ b/arch/arm/mach-omap2/usb-tusb6010.c @@ -120,8 +120,8 @@ static int tusb_set_sync_mode(unsigned sysclk_ps, unsigned fclk_ps) t.adv_on = next_clk(t.cs_on, t_scsnh_advnh - 7000, fclk_ps); /* GPMC_CLK rate = fclk rate / div */ - t.sync_clk = 12 /* 11.1 nsec */; - tmp = (t.sync_clk * 1000 + fclk_ps - 1) / fclk_ps; + t.sync_clk = 11100 /* 11.1 nsec */; + tmp = (t.sync_clk + fclk_ps - 1) / fclk_ps; if (tmp > 4) return -ERANGE; if (tmp <= 0) diff --git a/arch/arm/plat-omap/include/plat/gpmc.h b/arch/arm/plat-omap/include/plat/gpmc.h index 9fd99b9e40ab..85ded598853e 100644 --- a/arch/arm/plat-omap/include/plat/gpmc.h +++ b/arch/arm/plat-omap/include/plat/gpmc.h @@ -80,12 +80,12 @@ #define GPMC_PREFETCH_STATUS_COUNT(val) (val & 0x00003fff) /* - * Note that all values in this struct are in nanoseconds, while - * the register values are in gpmc_fck cycles. + * Note that all values in this struct are in nanoseconds except sync_clk + * (which is in picoseconds), while the register values are in gpmc_fck cycles. */ struct gpmc_timings { - /* Minimum clock period for synchronous mode */ - u16 sync_clk; + /* Minimum clock period for synchronous mode (in picoseconds) */ + u32 sync_clk; /* Chip-select signal timings corresponding to GPMC_CS_CONFIG2 */ u16 cs_on; /* Assertion time */ @@ -117,6 +117,7 @@ struct gpmc_timings { }; extern unsigned int gpmc_ns_to_ticks(unsigned int time_ns); +extern unsigned int gpmc_ps_to_ticks(unsigned int time_ps); extern unsigned int gpmc_ticks_to_ns(unsigned int ticks); extern unsigned int gpmc_round_ns_to_ticks(unsigned int time_ns); extern unsigned long gpmc_get_fclk_period(void); |