ARM OMAP2+ GPMC: calculate GPMCFCLKDIVIDER based on WAITMONITORINGTIME
The WAITMONITORINGTIME is expressed as a number of GPMC_CLK clock cycles,
even though the access is defined as asynchronous, and no GPMC_CLK clock
is provided to the external device. Still, GPMCFCLKDIVIDER is used as a divider
for the GPMC clock, so it must be programmed to define the
correct WAITMONITORINGTIME delay.
Calculate GPMCFCLKDIVIDER independent of gpmc,sync-clk-ps in DT for
pure asynchronous accesses, i.e. both read and write asynchronous.
Signed-off-by: Robert ABEL <rabel@cit-ec.uni-bielefeld.de>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
diff --git a/arch/arm/mach-omap2/gpmc-nand.c b/arch/arm/mach-omap2/gpmc-nand.c
index d5951b1..72918c4 100644
--- a/arch/arm/mach-omap2/gpmc-nand.c
+++ b/arch/arm/mach-omap2/gpmc-nand.c
@@ -96,14 +96,6 @@
gpmc_nand_res[1].start = gpmc_get_client_irq(GPMC_IRQ_FIFOEVENTENABLE);
gpmc_nand_res[2].start = gpmc_get_client_irq(GPMC_IRQ_COUNT_EVENT);
- if (gpmc_t) {
- err = gpmc_cs_set_timings(gpmc_nand_data->cs, gpmc_t);
- if (err < 0) {
- pr_err("omap2-gpmc: Unable to set gpmc timings: %d\n", err);
- return err;
- }
- }
-
memset(&s, 0, sizeof(struct gpmc_settings));
if (gpmc_nand_data->of_node)
gpmc_read_settings_dt(gpmc_nand_data->of_node, &s);
@@ -111,6 +103,16 @@
gpmc_set_legacy(gpmc_nand_data, &s);
s.device_nand = true;
+
+ if (gpmc_t) {
+ err = gpmc_cs_set_timings(gpmc_nand_data->cs, gpmc_t, &s);
+ if (err < 0) {
+ pr_err("omap2-gpmc: Unable to set gpmc timings: %d\n",
+ err);
+ return err;
+ }
+ }
+
err = gpmc_cs_program_settings(gpmc_nand_data->cs, &s);
if (err < 0)
goto out_free_cs;
diff --git a/arch/arm/mach-omap2/gpmc-onenand.c b/arch/arm/mach-omap2/gpmc-onenand.c
index 53d197e..f899e77 100644
--- a/arch/arm/mach-omap2/gpmc-onenand.c
+++ b/arch/arm/mach-omap2/gpmc-onenand.c
@@ -293,7 +293,7 @@
if (ret < 0)
return ret;
- ret = gpmc_cs_set_timings(gpmc_onenand_data->cs, &t);
+ ret = gpmc_cs_set_timings(gpmc_onenand_data->cs, &t, &onenand_async);
if (ret < 0)
return ret;
@@ -331,7 +331,7 @@
if (ret < 0)
return ret;
- ret = gpmc_cs_set_timings(gpmc_onenand_data->cs, &t);
+ ret = gpmc_cs_set_timings(gpmc_onenand_data->cs, &t, &onenand_sync);
if (ret < 0)
return ret;
diff --git a/arch/arm/mach-omap2/usb-tusb6010.c b/arch/arm/mach-omap2/usb-tusb6010.c
index 8333400..e554d9e 100644
--- a/arch/arm/mach-omap2/usb-tusb6010.c
+++ b/arch/arm/mach-omap2/usb-tusb6010.c
@@ -71,7 +71,7 @@
gpmc_calc_timings(&t, &tusb_async, &dev_t);
- return gpmc_cs_set_timings(async_cs, &t);
+ return gpmc_cs_set_timings(async_cs, &t, &tusb_async);
}
static int tusb_set_sync_mode(unsigned sysclk_ps)
@@ -98,7 +98,7 @@
gpmc_calc_timings(&t, &tusb_sync, &dev_t);
- return gpmc_cs_set_timings(sync_cs, &t);
+ return gpmc_cs_set_timings(sync_cs, &t, &tusb_sync);
}
/* tusb driver calls this when it changes the chip's clocking */