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authorSantosh Shilimkar <santosh.shilimkar@ti.com>2010-12-21 22:37:29 -0700
committerPaul Walmsley <paul@pwsan.com>2010-12-21 22:37:29 -0700
commit60a0e5d972bad6927b63aede7a1cfe758b8251ad (patch)
treeffee970a3da91ae6b766fa37e79d80db51f4afd8 /arch/arm/mach-omap2
parent80f093657371b3ebb1d05354a698088bf7b21c15 (diff)
OMAP4: clock data: Keep L3INSTR clock domain modulemode under HW control
L3INSTR clock domain is read only register and its reset value is HW_AUTO. The modules withing this clock domain needs to be kept under hardware control. MODULEMODE: - 0x0: Module is disable by software. Any INTRCONN access to module results in an error, except if resulting from a module wakeup (asynchronous wakeup). - 0x1: Module is managed automatically by hardware according to clock domain transition. A clock domain sleep transition put module into idle. A wakeup domain transition put it back into function. If CLKTRCTRL=3, any INTRCONN access to module is always granted. Module clocks may be gated according to the clock domain state. This patch keeps CM_L3INSTR_L3_3_CLKCTRL, CM_L3INSTR_L3_INSTR_CLKCTRL and CM_L3INSTR_INTRCONN_WP1_CLKCTRL module mode under hardware control by using ENABLE_ON_INIT flag. Without this the OMAP4 device OFF mode SAR restore phase aborts during interconnect register restore phase. This can be also handled by doing explicit a clock enable and disable in the low power code since there is no direct module associated with it. But that seems not necessary since the clock domain is under HW control. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Benoit Cousson <b-cousson@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
Diffstat (limited to 'arch/arm/mach-omap2')
-rw-r--r--arch/arm/mach-omap2/clock44xx_data.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/clock44xx_data.c b/arch/arm/mach-omap2/clock44xx_data.c
index 7a8e27bcab4..4821a23aa26 100644
--- a/arch/arm/mach-omap2/clock44xx_data.c
+++ b/arch/arm/mach-omap2/clock44xx_data.c
@@ -1829,6 +1829,7 @@ static struct clk l3_instr_ick = {
.enable_reg = OMAP4430_CM_L3INSTR_L3_INSTR_CLKCTRL,
.enable_bit = OMAP4430_MODULEMODE_HWCTRL,
.clkdm_name = "l3_instr_clkdm",
+ .flags = ENABLE_ON_INIT,
.parent = &l3_div_ck,
.recalc = &followparent_recalc,
};
@@ -1839,6 +1840,7 @@ static struct clk l3_main_3_ick = {
.enable_reg = OMAP4430_CM_L3INSTR_L3_3_CLKCTRL,
.enable_bit = OMAP4430_MODULEMODE_HWCTRL,
.clkdm_name = "l3_instr_clkdm",
+ .flags = ENABLE_ON_INIT,
.parent = &l3_div_ck,
.recalc = &followparent_recalc,
};
@@ -2143,6 +2145,7 @@ static struct clk ocp_wp_noc_ick = {
.enable_reg = OMAP4430_CM_L3INSTR_OCP_WP1_CLKCTRL,
.enable_bit = OMAP4430_MODULEMODE_HWCTRL,
.clkdm_name = "l3_instr_clkdm",
+ .flags = ENABLE_ON_INIT,
.parent = &l3_div_ck,
.recalc = &followparent_recalc,
};