[PATCH] arm64: dts: marvell: Disable AP I2C on Armada-8040-DB

[PATCH] arm64: dts: marvell: Disable AP I2C on Armada-8040-DB

[Miquel Raynal]

From: Konstantin Porotchkin <kostap@marvell.com>

While AP I2C bus was available to users in early revisions of the SoC,
this is not the case anymore since eMMC was connected to the AP. Most
users do not have access to this I2C bus so do not enable it in the
board device tree.

As there are three I2C buses enabled on this board, add an alias to be
sure the two other buses keep their initial numbering.

Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
[<miquel.raynal@bootlin.com>: Reword commit message, add alias]
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 arch/arm64/boot/dts/marvell/armada-8040-db.dts | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/arch/arm64/boot/dts/marvell/armada-8040-db.dts b/arch/arm64/boot/dts/marvell/armada-8040-db.dts
index 9f4f939ab65f..d6e9c014c2f9 100644
--- a/arch/arm64/boot/dts/marvell/armada-8040-db.dts
+++ b/arch/arm64/boot/dts/marvell/armada-8040-db.dts
@@ -27,6 +27,8 @@
 		ethernet1 = &cp0_eth2;
 		ethernet2 = &cp1_eth0;
 		ethernet3 = &cp1_eth1;
+		i2c1 = &cp0_i2c0;
+		i2c2 = &cp1_i2c0;
 	};
 
 	cp0_reg_usb3_0_vbus: cp0-usb3-0-vbus {
@@ -72,11 +74,6 @@
 	};
 };
 
-&i2c0 {
-	status = "okay";
-	clock-frequency = <100000>;
-};
-
 &spi0 {
 	status = "okay";
 
-- 
2.19.1


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Re: [PATCH] arm64: dts: marvell: Disable AP I2C on Armada-8040-DB

[Gregory CLEMENT]

Hi Miquel,

> From: Konstantin Porotchkin <kostap@marvell.com>
>
> While AP I2C bus was available to users in early revisions of the SoC,
> this is not the case anymore since eMMC was connected to the AP. Most
> users do not have access to this I2C bus so do not enable it in the
> board device tree.
>
> As there are three I2C buses enabled on this board, add an alias to be
> sure the two other buses keep their initial numbering.
>
> Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
> [<miquel.raynal@bootlin.com>: Reword commit message, add alias]
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

Applied on mvebu/dt64

Thanks,

Gregory

> ---
>  arch/arm64/boot/dts/marvell/armada-8040-db.dts | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/marvell/armada-8040-db.dts b/arch/arm64/boot/dts/marvell/armada-8040-db.dts
> index 9f4f939ab65f..d6e9c014c2f9 100644
> --- a/arch/arm64/boot/dts/marvell/armada-8040-db.dts
> +++ b/arch/arm64/boot/dts/marvell/armada-8040-db.dts
> @@ -27,6 +27,8 @@
>  		ethernet1 = &cp0_eth2;
>  		ethernet2 = &cp1_eth0;
>  		ethernet3 = &cp1_eth1;
> +		i2c1 = &cp0_i2c0;
> +		i2c2 = &cp1_i2c0;
>  	};
>  
>  	cp0_reg_usb3_0_vbus: cp0-usb3-0-vbus {
> @@ -72,11 +74,6 @@
>  	};
>  };
>  
> -&i2c0 {
> -	status = "okay";
> -	clock-frequency = <100000>;
> -};
> -
>  &spi0 {
>  	status = "okay";
>  
> -- 
> 2.19.1
>

-- 
Gregory Clement, Bootlin
Embedded Linux and Kernel engineering
http://bootlin.com

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