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>
Index: linux-2.6-submit/arch/arm/mach-mx5/clock-mx51-mx53.c
===================================================================
--- linux-2.6-submit.orig/arch/arm/mach-mx5/clock-mx51-mx53.c	2011-01-04 11:36:15.000000000 +0100
+++ linux-2.6-submit/arch/arm/mach-mx5/clock-mx51-mx53.c	2011-01-04 11:39:55.000000000 +0100
@@ -1206,6 +1206,11 @@
 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);
@@ -1298,6 +1303,8 @@
 	_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)
Index: linux-2.6-submit/arch/arm/mach-mx5/devices.c
===================================================================
--- linux-2.6-submit.orig/arch/arm/mach-mx5/devices.c	2011-01-04 11:11:43.000000000 +0100
+++ linux-2.6-submit/arch/arm/mach-mx5/devices.c	2011-01-04 11:39:55.000000000 +0100
@@ -120,6 +120,44 @@
 	},
 };
 
+static struct resource pwm1_resources[] = {
+	{
+		.start = MX51_PWM1_BASE_ADDR,
+		.end = MX51_PWM1_BASE_ADDR + 0x14,
+		.flags = IORESOURCE_MEM,
+	}, {
+		.start = MX51_MXC_INT_PWM1,
+		.end = MX51_MXC_INT_PWM1,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+struct platform_device mxc_pwm1_device = {
+	.name = "mxc_pwm",
+	.id = 0,
+	.num_resources = ARRAY_SIZE(pwm1_resources),
+	.resource = pwm1_resources,
+};
+
+static struct resource pwm2_resources[] = {
+	{
+		.start = MX51_PWM2_BASE_ADDR,
+		.end = MX51_PWM2_BASE_ADDR + 0x14,
+		.flags = IORESOURCE_MEM,
+	}, {
+		.start = MX51_MXC_INT_PWM2,
+		.end = MX51_MXC_INT_PWM2,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+struct platform_device mxc_pwm2_device = {
+	.name = "mxc_pwm",
+	.id = 1,
+	.num_resources = ARRAY_SIZE(pwm2_resources),
+	.resource = pwm2_resources,
+};
+
 static struct resource mxc_kpp_resources[] = {
 	{
 		.start = MX51_MXC_INT_KPP,
Index: linux-2.6-submit/arch/arm/mach-mx5/devices.h
===================================================================
--- linux-2.6-submit.orig/arch/arm/mach-mx5/devices.h	2011-01-04 11:11:43.000000000 +0100
+++ linux-2.6-submit/arch/arm/mach-mx5/devices.h	2011-01-04 11:39:55.000000000 +0100
@@ -4,3 +4,5 @@
 extern struct platform_device mxc_usbdr_udc_device;
 extern struct platform_device mxc_hsi2c_device;
 extern struct platform_device mxc_keypad_device;
+extern struct platform_device mxc_pwm1_device;
+extern struct platform_device mxc_pwm2_device;
Index: linux-2.6-submit/arch/arm/plat-mxc/pwm.c
===================================================================
--- linux-2.6-submit.orig/arch/arm/plat-mxc/pwm.c	2011-01-04 11:09:58.000000000 +0100
+++ linux-2.6-submit/arch/arm/plat-mxc/pwm.c	2011-01-04 11:39:55.000000000 +0100
@@ -57,7 +57,7 @@
 	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;