[PATCH] ARM: mvebu: Update the mpp63 function in the device tree on Armada 370

[jason@lakedaemon.net (Jason Cooper)]

Hey Gregory,

On Wed, Dec 23, 2015 at 03:42:50PM +0100, Gregory CLEMENT wrote:
> Since the commit a526973e0291 ("pinctrl: mvebu: Fix mapping of pin
> 63 (gpo -> gpio)"), the mpp63 is no more declared as a GPO but is a
> GPIO. Even if in the datasheet this pin is described as GPO, the
> experience of the D-Link DNS-327L board shows that it can be used as a
> GPIO.

I think this is worth a comment in the binding doc to prevent confusion.

> This commits generated warnings for the board using this pin as gpo, with
> this patch the dts are fixed by using the new function (gpio) instead of
> the old one.
> 
> The binding documentation has also been updated accordingly.
> 
> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
> ---
>  .../devicetree/bindings/pinctrl/marvell,armada-370-pinctrl.txt       | 5 ++++-
>  arch/arm/boot/dts/armada-370-mirabox.dts                             | 2 +-
>  arch/arm/boot/dts/armada-370-netgear-rn104.dts                       | 2 +-
>  arch/arm/boot/dts/armada-370-synology-ds213j.dts                     | 2 +-
>  4 files changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/marvell,armada-370-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/marvell,armada-370-pinctrl.txt
> index add7c38ec7d8..8662f3aaf312 100644
> --- a/Documentation/devicetree/bindings/pinctrl/marvell,armada-370-pinctrl.txt
> +++ b/Documentation/devicetree/bindings/pinctrl/marvell,armada-370-pinctrl.txt
> @@ -91,6 +91,9 @@ mpp60         60       gpio, dev(ale1), uart1(rxd), sata0(prsnt), pcie(rstout),
>  mpp61         61       gpo, dev(we1), uart1(txd), audio(lrclk)
>  mpp62         62       gpio, dev(a2), uart1(cts), tdm(drx), pcie(clkreq0),
>                         audio(mclk), uart0(cts)
> -mpp63         63       gpo, spi0(sck), tclk
> +mpp63         63       gpio, spi0(sck), tclk

e.g.

mpp63		63	gpio, spi0(sck), tclk (datasheet incorrectly says gpo)

or similar.

thx,

Jason.

>  mpp64         64       gpio, spi0(miso), spi0(cs1)
>  mpp65         65       gpio, spi0(mosi), spi0(cs2)
> +
> +Note: According to the datasheet mpp63 is a gpo but there is at least
> +one example of a gpio usage on the board D-Link DNS-327L
> diff --git a/arch/arm/boot/dts/armada-370-mirabox.dts b/arch/arm/boot/dts/armada-370-mirabox.dts
> index 3aa980ad64f0..d5e19cd4d256 100644
> --- a/arch/arm/boot/dts/armada-370-mirabox.dts
> +++ b/arch/arm/boot/dts/armada-370-mirabox.dts
> @@ -200,7 +200,7 @@
>  &pinctrl {
>  	pwr_led_pin: pwr-led-pin {
>  		marvell,pins = "mpp63";
> -		marvell,function = "gpo";
> +		marvell,function = "gpio";
>  	};
>  
>  	stat_led_pins: stat-led-pins {
> diff --git a/arch/arm/boot/dts/armada-370-netgear-rn104.dts b/arch/arm/boot/dts/armada-370-netgear-rn104.dts
> index faa474874cb8..11565752b9f6 100644
> --- a/arch/arm/boot/dts/armada-370-netgear-rn104.dts
> +++ b/arch/arm/boot/dts/armada-370-netgear-rn104.dts
> @@ -297,7 +297,7 @@
>  
>  	backup_led_pin: backup-led-pin {
>  		marvell,pins = "mpp63";
> -		marvell,function = "gpo";
> +		marvell,function = "gpio";
>  	};
>  
>  	power_led_pin: power-led-pin {
> diff --git a/arch/arm/boot/dts/armada-370-synology-ds213j.dts b/arch/arm/boot/dts/armada-370-synology-ds213j.dts
> index 836bcc07afc5..8ca7a4340c0f 100644
> --- a/arch/arm/boot/dts/armada-370-synology-ds213j.dts
> +++ b/arch/arm/boot/dts/armada-370-synology-ds213j.dts
> @@ -339,7 +339,7 @@
>  
>  	fan_ctrl_high_pin: fan-ctrl-high-pin {
>  		marvell,pins = "mpp63";
> -		marvell,function = "gpo";
> +		marvell,function = "gpio";
>  	};
>  
>  	fan_alarm_pin: fan-alarm-pin {
> -- 
> 2.5.0
>