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Commit dd027b00 authored by Arnaud Patard's avatar Arnaud Patard Committed by Sascha Hauer
Browse files

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: default avatarArnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent 01c0761c

arch/arm/mach-mx5/clock-mx51-mx53.c

+7 −0
Original line number Diff line number Diff line
@@ -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)

arch/arm/plat-mxc/pwm.c

+1 −1
Original line number Diff line number Diff line
@@ -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;