pwm: sun4i: Support direct clock output on Allwinner A64

Allwinner A64 is capable of a direct clock output on PWM (see A64 User
Manual chapter 3.10). Add support for this in the sun4i PWM driver.
Signed-off-by: Peter Vasil <peter.vasil@gmail.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

drivers/pwm/pwm-sun4i.c

@@ -352,6 +352,12 @@ static const struct sun4i_pwm_data sun4i_pwm_single_bypass = {
 	.npwm = 1,
 };
 
+static const struct sun4i_pwm_data sun50i_a64_pwm_data = {
+	.has_prescaler_bypass = true,
+	.has_direct_mod_clk_output = true,
+	.npwm = 1,
+};
+
 static const struct sun4i_pwm_data sun50i_h6_pwm_data = {
 	.has_prescaler_bypass = true,
 	.has_direct_mod_clk_output = true,
@@ -374,6 +380,9 @@ static const struct of_device_id sun4i_pwm_dt_ids[] = {
 	}, {
 		.compatible = "allwinner,sun8i-h3-pwm",
 		.data = &sun4i_pwm_single_bypass,
+	}, {
+		.compatible = "allwinner,sun50i-a64-pwm",
+		.data = &sun50i_a64_pwm_data,
 	}, {
 		.compatible = "allwinner,sun50i-h6-pwm",
 		.data = &sun50i_h6_pwm_data,