From dd027b00eb5cc8580452fe66447eacdce2d57db6 Mon Sep 17 00:00:00 2001 From: "Arnaud Patard (Rtp)" Date: Thu, 13 Jan 2011 12:26:40 +0100 Subject: [PATCH] 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 Signed-off-by: Sascha Hauer --- arch/arm/mach-mx5/clock-mx51-mx53.c | 7 +++++++ arch/arm/plat-mxc/pwm.c | 2 +- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c index f1f45b63f455..ce4ffd769138 100644 --- a/arch/arm/mach-mx5/clock-mx51-mx53.c +++ b/arch/arm/mach-mx5/clock-mx51-mx53.c @@ -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) diff --git a/arch/arm/plat-mxc/pwm.c b/arch/arm/plat-mxc/pwm.c index c36f2630ed93..7a61ef8f471a 100644 --- a/arch/arm/plat-mxc/pwm.c +++ b/arch/arm/plat-mxc/pwm.c @@ -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;