Currently OMAP2+ devices are using the function __omap_dm_timer_reset() to
configure the clock-activity, idle, wakeup-enable and auto-idle fields in the
timer OCP_CFG register. The name of the function is mis-leading because this
function does not actually perform a reset of the timer.
For OMAP2+ devices, HWMOD is responsible for reseting and configuring the
timer OCP_CFG register. Therefore, do not use __omap_dm_timer_reset() for
OMAP2+ devices and rely on HWMOD. Furthermore, some timer instances do not
have the fields clock-activity, wakeup-enable and auto-idle and so this
function could configure the OCP_CFG register incorrectly.
Currently HWMOD is not configuring the clock-activity field in the OCP_CFG
register for timers that have this field. Commit 0f0d080 (ARM: OMAP: DMTimer:
Use posted mode) configures the clock-activity field to keep the f-clk enabled
so that the wake-up capability is enabled. Therefore, add the appropriate flags
to the timer HWMOD structures to configure this field in the same way.
For OMAP2/3 devices all dmtimers have the clock-activity field, where as for
OMAP4 devices, only dmtimer 1, 2 and 10 have the clock-activity field.
Verified on OMAP2420 H4, OMAP3430 Beagle and OMAP4430 Panda that HWMOD is
configuring the dmtimer OCP_CFG register as expected for clock-events timer.
Signed-off-by: Jon Hunter <jon-hunter@xxxxxx>
---
arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c | 13 +++++++++++++
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 13 +++++++++++++
arch/arm/mach-omap2/omap_hwmod_44xx_data.c | 4 ++++
arch/arm/mach-omap2/timer.c | 1 -
4 files changed, 30 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c b/arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c
index d094285..e64df71 100644
--- a/arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c
@@ -62,6 +62,7 @@ static struct omap_hwmod_class_sysconfig omap2xxx_timer_sysc = {
SYSC_HAS_ENAWAKEUP | SYSC_HAS_SOFTRESET |
SYSC_HAS_AUTOIDLE | SYSS_HAS_RESET_STATUS),
.idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
+ .clockact = CLOCKACT_TEST_ICLK,
.sysc_fields = &omap_hwmod_sysc_type1,
};
@@ -239,6 +240,7 @@ struct omap_hwmod omap2xxx_timer1_hwmod = {
},
.dev_attr = &capability_alwon_dev_attr,
.class = &omap2xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer2 */
@@ -257,6 +259,7 @@ struct omap_hwmod omap2xxx_timer2_hwmod = {
},
},
.class = &omap2xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer3 */
@@ -275,6 +278,7 @@ struct omap_hwmod omap2xxx_timer3_hwmod = {
},
},
.class = &omap2xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer4 */
@@ -293,6 +297,7 @@ struct omap_hwmod omap2xxx_timer4_hwmod = {
},
},
.class = &omap2xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer5 */
@@ -311,6 +316,7 @@ struct omap_hwmod omap2xxx_timer5_hwmod = {
},
},
.class = &omap2xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer6 */
@@ -329,6 +335,7 @@ struct omap_hwmod omap2xxx_timer6_hwmod = {
},
},
.class = &omap2xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer7 */
@@ -347,6 +354,7 @@ struct omap_hwmod omap2xxx_timer7_hwmod = {
},
},
.class = &omap2xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer8 */
@@ -365,6 +373,7 @@ struct omap_hwmod omap2xxx_timer8_hwmod = {
},
},
.class = &omap2xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer9 */
@@ -384,6 +393,7 @@ struct omap_hwmod omap2xxx_timer9_hwmod = {
},
.dev_attr = &capability_pwm_dev_attr,
.class = &omap2xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer10 */
@@ -403,6 +413,7 @@ struct omap_hwmod omap2xxx_timer10_hwmod = {
},
.dev_attr = &capability_pwm_dev_attr,
.class = &omap2xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer11 */
@@ -422,6 +433,7 @@ struct omap_hwmod omap2xxx_timer11_hwmod = {
},
.dev_attr = &capability_pwm_dev_attr,
.class = &omap2xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer12 */
@@ -441,6 +453,7 @@ struct omap_hwmod omap2xxx_timer12_hwmod = {
},
.dev_attr = &capability_pwm_dev_attr,
.class = &omap2xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* wd_timer2 */
diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
index 5f0b2ee..4b02440 100644
--- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
@@ -124,6 +124,7 @@ static struct omap_hwmod_class_sysconfig omap3xxx_timer_sysc = {
SYSC_HAS_EMUFREE | SYSC_HAS_AUTOIDLE |
SYSS_HAS_RESET_STATUS),
.idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
+ .clockact = CLOCKACT_TEST_ICLK,
.sysc_fields = &omap_hwmod_sysc_type1,
};
@@ -163,6 +164,7 @@ static struct omap_hwmod omap3xxx_timer1_hwmod = {
},
.dev_attr = &capability_alwon_dev_attr,
.class = &omap3xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer2 */
@@ -180,6 +182,7 @@ static struct omap_hwmod omap3xxx_timer2_hwmod = {
},
},
.class = &omap3xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer3 */
@@ -197,6 +200,7 @@ static struct omap_hwmod omap3xxx_timer3_hwmod = {
},
},
.class = &omap3xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer4 */
@@ -214,6 +218,7 @@ static struct omap_hwmod omap3xxx_timer4_hwmod = {
},
},
.class = &omap3xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer5 */
@@ -231,6 +236,7 @@ static struct omap_hwmod omap3xxx_timer5_hwmod = {
},
},
.class = &omap3xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer6 */
@@ -248,6 +254,7 @@ static struct omap_hwmod omap3xxx_timer6_hwmod = {
},
},
.class = &omap3xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer7 */
@@ -265,6 +272,7 @@ static struct omap_hwmod omap3xxx_timer7_hwmod = {
},
},
.class = &omap3xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer8 */
@@ -283,6 +291,7 @@ static struct omap_hwmod omap3xxx_timer8_hwmod = {
},
.dev_attr = &capability_pwm_dev_attr,
.class = &omap3xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer9 */
@@ -301,6 +310,7 @@ static struct omap_hwmod omap3xxx_timer9_hwmod = {
},
.dev_attr = &capability_pwm_dev_attr,
.class = &omap3xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer10 */
@@ -319,6 +329,7 @@ static struct omap_hwmod omap3xxx_timer10_hwmod = {
},
.dev_attr = &capability_pwm_dev_attr,
.class = &omap3xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer11 */
@@ -337,6 +348,7 @@ static struct omap_hwmod omap3xxx_timer11_hwmod = {
},
.dev_attr = &capability_pwm_dev_attr,
.class = &omap3xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/* timer12 */
@@ -360,6 +372,7 @@ static struct omap_hwmod omap3xxx_timer12_hwmod = {
},
.dev_attr = &capability_secure_dev_attr,
.class = &omap3xxx_timer_hwmod_class,
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
};
/*
diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
index 242aee4..e486ebd 100644
--- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
@@ -2869,6 +2869,7 @@ static struct omap_hwmod_class_sysconfig omap44xx_timer_1ms_sysc = {
SYSC_HAS_SIDLEMODE | SYSC_HAS_SOFTRESET |
SYSS_HAS_RESET_STATUS),
.idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
+ .clockact = CLOCKACT_TEST_ICLK,
.sysc_fields = &omap_hwmod_sysc_type1,
};
@@ -2912,6 +2913,7 @@ static struct omap_hwmod omap44xx_timer1_hwmod = {
.name = "timer1",
.class = &omap44xx_timer_1ms_hwmod_class,
.clkdm_name = "l4_wkup_clkdm",
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
.mpu_irqs = omap44xx_timer1_irqs,
.main_clk = "timer1_fck",
.prcm = {
@@ -2934,6 +2936,7 @@ static struct omap_hwmod omap44xx_timer2_hwmod = {
.name = "timer2",
.class = &omap44xx_timer_1ms_hwmod_class,
.clkdm_name = "l4_per_clkdm",
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
.mpu_irqs = omap44xx_timer2_irqs,
.main_clk = "timer2_fck",
.prcm = {
@@ -3105,6 +3108,7 @@ static struct omap_hwmod omap44xx_timer10_hwmod = {
.name = "timer10",
.class = &omap44xx_timer_1ms_hwmod_class,
.clkdm_name = "l4_per_clkdm",
+ .flags = HWMOD_SET_DEFAULT_CLOCKACT,
.mpu_irqs = omap44xx_timer10_irqs,
.main_clk = "timer10_fck",
.prcm = {
diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index e24ee0f..1ee67a3 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -193,7 +193,6 @@ static int __init omap_dm_timer_init_one(struct omap_dm_timer *timer,
}
}
__omap_dm_timer_init_regs(timer);
- __omap_dm_timer_reset(timer, 1, 1);
__omap_dm_timer_enable_posted(timer);
timer->rate = clk_get_rate(timer->fclk);
--
1.7.9.5
--
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