From 60a0e5d972bad6927b63aede7a1cfe758b8251ad Mon Sep 17 00:00:00 2001 From: Santosh Shilimkar Date: Tue, 21 Dec 2010 22:37:29 -0700 Subject: 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 Signed-off-by: Santosh Shilimkar Acked-by: Benoit Cousson Signed-off-by: Paul Walmsley --- arch/arm/mach-omap2/clock44xx_data.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/arm') diff --git a/arch/arm/mach-omap2/clock44xx_data.c b/arch/arm/mach-omap2/clock44xx_data.c index 7a8e27bcab42..4821a23aa26c 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, }; -- cgit v1.2.2