[PATCH v2 02/16] pwm: pxa: update documentation regarding pwm-cells

Claudiu Beznea claudiu.beznea at microchip.com
Fri Jan 12 06:22:49 PST 2018


pwm-cells should be at least 2 to provide channel number and period value.

Cc: Mike Dunn <mikedunn at newsguy.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea at microchip.com>
---
 Documentation/devicetree/bindings/pwm/pxa-pwm.txt | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/pwm/pxa-pwm.txt b/Documentation/devicetree/bindings/pwm/pxa-pwm.txt
index 5ae9f1e3c338..a0e20edeeebc 100644
--- a/Documentation/devicetree/bindings/pwm/pxa-pwm.txt
+++ b/Documentation/devicetree/bindings/pwm/pxa-pwm.txt
@@ -10,7 +10,7 @@ Required properties:
   Note that one device instance must be created for each PWM that is used, so the
   length covers only the register window for one PWM output, not that of the
   entire PWM controller.  Currently length is 0x10 for all supported devices.
-- #pwm-cells: Should be 1.  This cell is used to specify the period in
+- #pwm-cells: Should be 2.  This cell is used to specify the period in
   nanoseconds.
 
 Example PWM device node:
@@ -18,13 +18,13 @@ Example PWM device node:
 pwm0: pwm at 40b00000 {
 	compatible = "marvell,pxa250-pwm";
 	reg = <0x40b00000 0x10>;
-	#pwm-cells = <1>;
+	#pwm-cells = <2>;
 };
 
 Example PWM client node:
 
 backlight {
 	compatible = "pwm-backlight";
-	pwms = <&pwm0 5000000>;
+	pwms = <&pwm0 0 5000000>;
 	...
 }
-- 
2.7.4




More information about the linux-rpi-kernel mailing list