diff mbox

[PATCHv2,2/3] ARM: dts: vf610-twr: Add PWM0's pinctrl node

Message ID 1395627736-5338-3-git-send-email-Li.Xiubo@freescale.com (mailing list archive)
State New, archived
Headers show

Commit Message

Xiubo Li March 24, 2014, 2:22 a.m. UTC
Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
---
 arch/arm/boot/dts/vf610-twr.dts | 11 +++++++++++
 1 file changed, 11 insertions(+)

Comments

Bill Pringlemeir July 29, 2014, 6:56 p.m. UTC | #1
On 23 Mar 2014, Li.Xiubo at freescale.com wrote:

> Signed-off-by: Xiubo Li <Li.Xiubo at freescale.com>
> ---
> arch/arm/boot/dts/vf610-twr.dts | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/arch/arm/boot/dts/vf610-twr.dts
> b/arch/arm/boot/dts/vf610-twr.dts index f3af8ea..3fabdb5 100644 ---
> a/arch/arm/boot/dts/vf610-twr.dts +++
> b/arch/arm/boot/dts/vf610-twr.dts @@ -213,6 +213,17 @@
> 			>;
> 		};
>
> + pinctrl_pwm0: pwm0grp { + fsl,pins = < + VF610_PAD_PTB0__FTM0_CH0

Hi Xiubo,

I think you added this for the tower audio board?  Maybe the beeper?
Are these lines needed?

+	VF610_PAD_PTB6__FTM0_CH6		0x1582
+	VF610_PAD_PTB7__FTM0_CH7		0x1582

According to my tower schematics, PTB6 routes to the Primary B35/GPIO4,
and B40/FTM0CH6/PWM4 and to the jumpers J23.  PTB7 routes to
B39/FTM0CH7/PWM5, EIRQ3/B55/B56, and jumper J24.  I think that most
people have some tower serial card which can also route these lines
and/or they are sent to the OpenSDA chip which does a ttyACM (USB
serial) on all Tower main boards.

Did you just add all FTM channels 0-7 in the DTS?  Or are each and every
one mapped to a pin on the expansion/riser boards.  Could we remove the
two lines above and use,

	pinctrl_uart2: uart2grp {
		fsl,pins = <
                        VF610_PAD_PTB6__UART2_TX                0x21a2
                        VF610_PAD_PTB7__UART2_RX                0x21a1
		>;
	};

So that the PTB6/7 map to UART2?  Or are these indeed a conflict with
some audio board (or other)?  I think it might be valuable to add the
'ttyLP2' to the vf610-twr.  An MMC image could echo 'wrong serial port,
set J23/24' for instance to tell people that the serial console was not
connected properly (or something else).  People may also wish to use a
serial interface for other peripherals or as a 2nd debug port.

Thanks,
Bill Pringlemeir.
Xiubo Li July 30, 2014, 2:11 a.m. UTC | #2
Hi Bill Pringlemeir,

> > diff --git a/arch/arm/boot/dts/vf610-twr.dts
> > b/arch/arm/boot/dts/vf610-twr.dts index f3af8ea..3fabdb5 100644 ---
> > a/arch/arm/boot/dts/vf610-twr.dts +++
> > b/arch/arm/boot/dts/vf610-twr.dts @@ -213,6 +213,17 @@
> > 			>;
> > 		};
> >
> > + pinctrl_pwm0: pwm0grp { + fsl,pins = < + VF610_PAD_PTB0__FTM0_CH0
> 
> Hi Xiubo,
> 
> I think you added this for the tower audio board?  Maybe the beeper?

For the PWM leds and beepers, for now only the ch0~ch3 are used here.

> Are these lines needed?
> 
> +	VF610_PAD_PTB6__FTM0_CH6		0x1582
> +	VF610_PAD_PTB7__FTM0_CH7		0x1582
> 
> According to my tower schematics, PTB6 routes to the Primary B35/GPIO4,
> and B40/FTM0CH6/PWM4 and to the jumpers J23.  PTB7 routes to
> B39/FTM0CH7/PWM5, EIRQ3/B55/B56, and jumper J24.  I think that most
> people have some tower serial card which can also route these lines
> and/or they are sent to the OpenSDA chip which does a ttyACM (USB
> serial) on all Tower main boards.
> 
> Did you just add all FTM channels 0-7 in the DTS?  Or are each and every
> one mapped to a pin on the expansion/riser boards.  Could we remove the
> two lines above and use,
> 
> 	pinctrl_uart2: uart2grp {
> 		fsl,pins = <
>                         VF610_PAD_PTB6__UART2_TX                0x21a2
>                         VF610_PAD_PTB7__UART2_RX                0x21a1
> 		>;
> 	};
> 
> So that the PTB6/7 map to UART2?  Or are these indeed a conflict with
> some audio board (or other)? 

There hasn't any confliction with audio board as far as I know.
I think they can be removed.


> I think it might be valuable to add the
> 'ttyLP2' to the vf610-twr.  An MMC image could echo 'wrong serial port,
> set J23/24' for instance to tell people that the serial console was not
> connected properly (or something else).  People may also wish to use a
> serial interface for other peripherals or as a 2nd debug port.
> 

Hum, if so I think it's okay.

@Shawn,

Do you have any comments here ?


Thanks,

BRs
Xiubo



> Thanks,
> Bill Pringlemeir.
Shawn Guo July 30, 2014, 2:58 a.m. UTC | #3
On Wed, Jul 30, 2014 at 10:11:48AM +0800, Xiubo Li-B47053 wrote:
> > I think it might be valuable to add the
> > 'ttyLP2' to the vf610-twr.  An MMC image could echo 'wrong serial port,
> > set J23/24' for instance to tell people that the serial console was not
> > connected properly (or something else).  People may also wish to use a
> > serial interface for other peripherals or as a 2nd debug port.
> > 
> 
> Hum, if so I think it's okay.
> 
> @Shawn,
> 
> Do you have any comments here ?

I'm fine with leaving the pins to serial interface, if it makes the most
sense to most people, which sounds like the case from your discussion.

Shawn
diff mbox

Patch

diff --git a/arch/arm/boot/dts/vf610-twr.dts b/arch/arm/boot/dts/vf610-twr.dts
index f3af8ea..3fabdb5 100644
--- a/arch/arm/boot/dts/vf610-twr.dts
+++ b/arch/arm/boot/dts/vf610-twr.dts
@@ -213,6 +213,17 @@ 
 			>;
 		};
 
+		pinctrl_pwm0: pwm0grp {
+			fsl,pins = <
+				VF610_PAD_PTB0__FTM0_CH0		0x1582
+				VF610_PAD_PTB1__FTM0_CH1		0x1582
+				VF610_PAD_PTB2__FTM0_CH2		0x1582
+				VF610_PAD_PTB3__FTM0_CH3		0x1582
+				VF610_PAD_PTB6__FTM0_CH6		0x1582
+				VF610_PAD_PTB7__FTM0_CH7		0x1582
+			>;
+		};
+
 		pinctrl_sai2: sai2grp {
 			fsl,pins = <
 				VF610_PAD_PTA16__SAI2_TX_BCLK		0x02ed