Re: [PATCH v2 1/4] ARM: dts: sun8i: Add PWM pin in H3

From: Milo Kim
Date: Thu Sep 01 2016 - 09:06:25 EST


On 09/01/2016 01:20 AM, Maxime Ripard wrote:
Hi Milo,

On Wed, Aug 31, 2016 at 05:25:17PM +0900, Milo Kim wrote:
H3 PA5 pin is assigned for single PWM channel.

Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
Cc: Chen-Yu Tsai <wens@xxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Milo Kim <woogyom.kim@xxxxxxxxx>
---
arch/arm/boot/dts/sun8i-h3.dtsi | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-h3.dtsi b/arch/arm/boot/dts/sun8i-h3.dtsi
index fdf9fdb..05d0c4b 100644
--- a/arch/arm/boot/dts/sun8i-h3.dtsi
+++ b/arch/arm/boot/dts/sun8i-h3.dtsi
@@ -360,6 +360,13 @@
allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
};

+ pwm0_pin_a: pwm0@0 {
+ allwinner,pins = "PA5";
+ allwinner,function = "pwm0";
+ allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+ allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+ };
+

Is it used on any boards?

If not, we have the policy of not merging the pinctrl nodes that are
not used by anyone to avoid bloating the DT for no particular reason.

Yes, I have. It's Nano Pi M1 which was derived from Orange Pi PC.
The board DTS is ready to be sent out, but I'm not sure which is better.

a) Send new board DTS file in other patch thread

[PATCH v3 0/4] Add PWM feature in Allwinner H3
[PATCH v3 1/4] ARM: dts: sun8i: Add PWM pin in H3
..
[PATCH v3 4/4] pwm: sunxi: Add H3 support

[PATCH] ARM: dts: sun8i: Add Nano Pi M1 support

Or

b) Include the DTS in next patch-set v3
[PATCH v3 0/4] Add PWM feature in Allwinner H3
[PATCH v3 1/4] ARM: dts: sun8i: Add PWM pin in H3
[PATCH v3 2/4] ARM: dts: sun8i: Add PWM controller node in H3
[PATCH v3 3/4] ARM: dts: sun8i: Add Nano Pi M1 support
...

I'd like to have your opinion.

Best regards,
Milo