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| author |   Santosh Shilimkar <santosh.shilimkar@ti.com> | 2010-06-16 19:01:33 +0300 |
|---|---|---|
| committer |   Tony Lindgren <tony@atomide.com> | 2010-06-16 19:01:33 +0300 |
| commit | 090830b4c79cd5ac85430822a9b87c90848bedcf (patch) | |
| tree | eb9a7ef3a9d9b7e4f7c9fc9b897cf4204fae20e7 /arch | |
| parent | OMAP3: PM: fix IO daisy chain enable to use PM_WKEN reg (diff) | |
| download | linux-dev-090830b4c79cd5ac85430822a9b87c90848bedcf.tar.xz linux-dev-090830b4c79cd5ac85430822a9b87c90848bedcf.zip | |
OMAP4: clock: Fix multi-omap boot with reset un-used clocks
This patch uses "ENABLE_ON_INIT" flag on the emif clock nodes
to avoid the emif clk getting cut as part of reset un-used clock
routine which prevents boot.
Since "omap4xxx_clk_init()" calls "clk_enable_init_clocks()"
which increases the usecount on all ENABLE_ON_INIT clocks, it
prevents "omap2_clk_disable_unused()" from disabling the clock.
The real fix is to have driver for EMIF and do clock get/enable
as part of it. The EMIF driver is planned to be done HWMOD way
so till that available to keep omap3_defconfig booting on OMAP4430,
this patch is necessary.
(Will updated the auto-gen script for 44xx accordingly)
The fix was suggested by Paul Walmsley
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Nishanth Menon <nm@ti.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-omap2/clock44xx_data.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/clock44xx_data.c b/arch/arm/mach-omap2/clock44xx_data.c index 02804224517b..e10db7a90cb2 100644 --- a/arch/arm/mach-omap2/clock44xx_data.c +++ b/arch/arm/mach-omap2/clock44xx_data.c @@ -1369,6 +1369,7 @@ static struct clk emif1_ick = { .ops = &clkops_omap2_dflt, .enable_reg = OMAP4430_CM_MEMIF_EMIF_1_CLKCTRL, .enable_bit = OMAP4430_MODULEMODE_HWCTRL, + .flags = ENABLE_ON_INIT, .clkdm_name = "l3_emif_clkdm", .parent = &ddrphy_ck, .recalc = &followparent_recalc, @@ -1379,6 +1380,7 @@ static struct clk emif2_ick = { .ops = &clkops_omap2_dflt, .enable_reg = OMAP4430_CM_MEMIF_EMIF_2_CLKCTRL, .enable_bit = OMAP4430_MODULEMODE_HWCTRL, + .flags = ENABLE_ON_INIT, .clkdm_name = "l3_emif_clkdm", .parent = &ddrphy_ck, .recalc = &followparent_recalc, |