diff options
| -rw-r--r-- | arch/arm/mach-omap2/clock.c | 34 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/clock.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/clock44xx_data.c | 7 |
3 files changed, 41 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c index 61ee23596ea8..759c72a48f7f 100644 --- a/arch/arm/mach-omap2/clock.c +++ b/arch/arm/mach-omap2/clock.c @@ -70,9 +70,41 @@ u8 cpu_mask; /*------------------------------------------------------------------------- - * OMAP2/3 specific clock functions + * OMAP2/3/4 specific clock functions *-------------------------------------------------------------------------*/ +void omap2_init_dpll_parent(struct clk *clk) +{ + u32 v; + struct dpll_data *dd; + + dd = clk->dpll_data; + if (!dd) + return; + + /* Return bypass rate if DPLL is bypassed */ + v = __raw_readl(dd->control_reg); + v &= dd->enable_mask; + v >>= __ffs(dd->enable_mask); + + /* Reparent in case the dpll is in bypass */ + if (cpu_is_omap24xx()) { + if (v == OMAP2XXX_EN_DPLL_LPBYPASS || + v == OMAP2XXX_EN_DPLL_FRBYPASS) + clk_reparent(clk, dd->clk_bypass); + } else if (cpu_is_omap34xx()) { + if (v == OMAP3XXX_EN_DPLL_LPBYPASS || + v == OMAP3XXX_EN_DPLL_FRBYPASS) + clk_reparent(clk, dd->clk_bypass); + } else if (cpu_is_omap44xx()) { + if (v == OMAP4XXX_EN_DPLL_LPBYPASS || + v == OMAP4XXX_EN_DPLL_FRBYPASS || + v == OMAP4XXX_EN_DPLL_MNBYPASS) + clk_reparent(clk, dd->clk_bypass); + } + return; +} + /** * _omap2xxx_clk_commit - commit clock parent/rate changes in hardware * @clk: struct clk * diff --git a/arch/arm/mach-omap2/clock.h b/arch/arm/mach-omap2/clock.h index 8418f3a22e60..93c48df3b5b1 100644 --- a/arch/arm/mach-omap2/clock.h +++ b/arch/arm/mach-omap2/clock.h @@ -82,6 +82,7 @@ unsigned long omap2_fixed_divisor_recalc(struct clk *clk); long omap2_clksel_round_rate(struct clk *clk, unsigned long target_rate); int omap2_clksel_set_rate(struct clk *clk, unsigned long rate); u32 omap2_get_dpll_rate(struct clk *clk); +void omap2_init_dpll_parent(struct clk *clk); int omap2_wait_clock_ready(void __iomem *reg, u32 cval, const char *name); void omap2_clk_prepare_for_reboot(void); int omap2_dflt_clk_enable(struct clk *clk); diff --git a/arch/arm/mach-omap2/clock44xx_data.c b/arch/arm/mach-omap2/clock44xx_data.c index 9ae526ee0daf..2210e227d78a 100644 --- a/arch/arm/mach-omap2/clock44xx_data.c +++ b/arch/arm/mach-omap2/clock44xx_data.c @@ -278,6 +278,7 @@ static struct clk dpll_abe_ck = { .name = "dpll_abe_ck", .parent = &abe_dpll_refclk_mux_ck, .dpll_data = &dpll_abe_dd, + .init = &omap2_init_dpll_parent, .ops = &clkops_noncore_dpll_ops, .recalc = &omap3_dpll_recalc, .round_rate = &omap2_dpll_round_rate, @@ -439,6 +440,7 @@ static struct clk dpll_core_ck = { .name = "dpll_core_ck", .parent = &dpll_sys_ref_clk, .dpll_data = &dpll_core_dd, + .init = &omap2_init_dpll_parent, .ops = &clkops_null, .recalc = &omap3_dpll_recalc, .flags = CLOCK_IN_OMAP4430, @@ -665,6 +667,7 @@ static struct clk dpll_iva_ck = { .name = "dpll_iva_ck", .parent = &dpll_sys_ref_clk, .dpll_data = &dpll_iva_dd, + .init = &omap2_init_dpll_parent, .ops = &clkops_noncore_dpll_ops, .recalc = &omap3_dpll_recalc, .round_rate = &omap2_dpll_round_rate, @@ -727,6 +730,7 @@ static struct clk dpll_mpu_ck = { .name = "dpll_mpu_ck", .parent = &dpll_sys_ref_clk, .dpll_data = &dpll_mpu_dd, + .init = &omap2_init_dpll_parent, .ops = &clkops_noncore_dpll_ops, .recalc = &omap3_dpll_recalc, .round_rate = &omap2_dpll_round_rate, @@ -802,6 +806,7 @@ static struct clk dpll_per_ck = { .name = "dpll_per_ck", .parent = &dpll_sys_ref_clk, .dpll_data = &dpll_per_dd, + .init = &omap2_init_dpll_parent, .ops = &clkops_noncore_dpll_ops, .recalc = &omap3_dpll_recalc, .round_rate = &omap2_dpll_round_rate, @@ -924,6 +929,7 @@ static struct clk dpll_unipro_ck = { .name = "dpll_unipro_ck", .parent = &dpll_sys_ref_clk, .dpll_data = &dpll_unipro_dd, + .init = &omap2_init_dpll_parent, .ops = &clkops_noncore_dpll_ops, .recalc = &omap3_dpll_recalc, .round_rate = &omap2_dpll_round_rate, @@ -981,6 +987,7 @@ static struct clk dpll_usb_ck = { .name = "dpll_usb_ck", .parent = &dpll_sys_ref_clk, .dpll_data = &dpll_usb_dd, + .init = &omap2_init_dpll_parent, .ops = &clkops_noncore_dpll_ops, .recalc = &omap3_dpll_recalc, .round_rate = &omap2_dpll_round_rate, |