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author | Imre Deak <imre.deak@solidboot.com> | 2007-03-05 17:22:58 +0200 |
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committer | Tony Lindgren <tony@atomide.com> | 2007-09-20 18:34:49 -0700 |
commit | df2c2e70f0cb3fa2586beffc41fcd7e093453bc5 (patch) | |
tree | a26db59b0a0af428cd94d0160997e05b5e5e1a26 /arch/arm/mach-omap1/clock.c | |
parent | c72d8950baf737fe4da1982a8fad1f33fecdde2e (diff) | |
download | op-kernel-dev-df2c2e70f0cb3fa2586beffc41fcd7e093453bc5.zip op-kernel-dev-df2c2e70f0cb3fa2586beffc41fcd7e093453bc5.tar.gz |
ARM: OMAP: add SoSSI clock
This is needed, so that disabling the SoSSI clock during idle can
be prevented.
Signed-off-by: Imre Deak <imre.deak@solidboot.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap1/clock.c')
-rw-r--r-- | arch/arm/mach-omap1/clock.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/arm/mach-omap1/clock.c b/arch/arm/mach-omap1/clock.c index f625f6d..5d9faa6 100644 --- a/arch/arm/mach-omap1/clock.c +++ b/arch/arm/mach-omap1/clock.c @@ -49,6 +49,15 @@ static void omap1_uart_recalc(struct clk * clk) clk->rate = 12000000; } +static void omap1_sossi_recalc(struct clk *clk) +{ + u32 div = omap_readl(MOD_CONF_CTRL_1); + + div = (div >> 17) & 0x7; + div++; + clk->rate = clk->parent->rate / div; +} + static int omap1_clk_enable_dsp_domain(struct clk *clk) { int retval; @@ -396,6 +405,31 @@ static int omap1_set_ext_clk_rate(struct clk * clk, unsigned long rate) return 0; } +static int omap1_set_sossi_rate(struct clk *clk, unsigned long rate) +{ + u32 l; + int div; + unsigned long p_rate; + + p_rate = clk->parent->rate; + /* Round towards slower frequency */ + div = (p_rate + rate - 1) / rate; + div--; + if (div < 0 || div > 7) + return -EINVAL; + + l = omap_readl(MOD_CONF_CTRL_1); + l &= ~(7 << 17); + l |= div << 17; + omap_writel(l, MOD_CONF_CTRL_1); + + clk->rate = p_rate / (div + 1); + if (unlikely(clk->flags & RATE_PROPAGATES)) + propagate_rate(clk); + + return 0; +} + static long omap1_round_ext_clk_rate(struct clk * clk, unsigned long rate) { return 96000000 / calc_ext_dsor(rate); |