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authorArnd Bergmann <arnd@arndb.de>2012-01-07 07:44:37 -0500
committerArnd Bergmann <arnd@arndb.de>2012-01-07 15:40:51 -0500
commitb001befe58691ef3627458cd814e8cee7f845c5f (patch)
tree1083f1a1cd3feeceeac4b395534df0ff032fdbc8 /arch/arm/plat-mxc/pwm.c
parent31b2a868451d630bacfdeddc626371b3f9d9a01c (diff)
parent928a11ba36f999436915ea2b1eadf54301f93059 (diff)
Merge branch 'samsung/dt' into next/dt
* samsung/dt: (3 commit) Merge branch 'depends/rmk/for-linus' into samsung/dt Merge branch 'depends/rmk/restart' into next/cleanup Merge branch 'next/cleanup' into samsung/dt Conflicts: arch/arm/mach-tegra/board-dt.c arch/arm/mach-tegra/include/mach/entry-macro.S The latest version of the samsung/dt branch resolves all sorts of conflicts with the latest upstream, no functional changes that are not already there. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/plat-mxc/pwm.c')
-rw-r--r--arch/arm/plat-mxc/pwm.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/plat-mxc/pwm.c b/arch/arm/plat-mxc/pwm.c
index 845de59f07ed..e032717f7d02 100644
--- a/arch/arm/plat-mxc/pwm.c
+++ b/arch/arm/plat-mxc/pwm.c
@@ -77,6 +77,15 @@ int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)
77 do_div(c, period_ns); 77 do_div(c, period_ns);
78 duty_cycles = c; 78 duty_cycles = c;
79 79
80 /*
81 * according to imx pwm RM, the real period value should be
82 * PERIOD value in PWMPR plus 2.
83 */
84 if (period_cycles > 2)
85 period_cycles -= 2;
86 else
87 period_cycles = 0;
88
80 writel(duty_cycles, pwm->mmio_base + MX3_PWMSAR); 89 writel(duty_cycles, pwm->mmio_base + MX3_PWMSAR);
81 writel(period_cycles, pwm->mmio_base + MX3_PWMPR); 90 writel(period_cycles, pwm->mmio_base + MX3_PWMPR);
82 91