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mx51: add support for pwm 

This patch is adding support for pwm1 and pwm2 devices found
on mx51.
[ this patch has been tested with pwm-backlight driver ]

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Arnaud Patard (Rtp) 2011-01-13 12:26:40 +01:00 committed by Sascha Hauer
parent 01c0761cc1
commit dd027b00eb
2 changed files with 8 additions and 1 deletions
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7
arch/arm/mach-mx5/clock-mx51-mx53.c
View File

@ -1191,6 +1191,11 @@ DEFINE_CLOCK(gpt_ipg_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG10_OFFSET,
DEFINE_CLOCK(gpt_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG9_OFFSET,
NULL, NULL, &ipg_clk, &gpt_ipg_clk);
DEFINE_CLOCK(pwm1_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG6_OFFSET,
NULL, NULL, &ipg_clk, NULL);
DEFINE_CLOCK(pwm2_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG8_OFFSET,
NULL, NULL, &ipg_clk, NULL);
/* I2C */
DEFINE_CLOCK(i2c1_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG9_OFFSET,
NULL, NULL, &ipg_clk, NULL);
@ -1283,6 +1288,8 @@ static struct clk_lookup mx51_lookups[] = {
_REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk)
_REGISTER_CLOCK(NULL, "gpt", gpt_clk)
_REGISTER_CLOCK("fec.0", NULL, fec_clk)
_REGISTER_CLOCK("mxc_pwm.0", "pwm", pwm1_clk)
_REGISTER_CLOCK("mxc_pwm.1", "pwm", pwm2_clk)
_REGISTER_CLOCK("imx-i2c.0", NULL, i2c1_clk)
_REGISTER_CLOCK("imx-i2c.1", NULL, i2c2_clk)
_REGISTER_CLOCK("imx-i2c.2", NULL, hsi2c_clk)

2
arch/arm/plat-mxc/pwm.c
View File

@ -57,7 +57,7 @@ int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)
if (pwm == NULL || period_ns == 0 || duty_ns > period_ns)
return -EINVAL;
if (cpu_is_mx27() || cpu_is_mx3() || cpu_is_mx25()) {
if (cpu_is_mx27() || cpu_is_mx3() || cpu_is_mx25() || cpu_is_mx51()) {
unsigned long long c;
unsigned long period_cycles, duty_cycles, prescale;
u32 cr;