[PATCH] ARM: nomadik: disable UART0 on Nomadik boards

[PATCH] ARM: nomadik: disable UART0 on Nomadik boards

[Linus Walleij]

The UART0 is not used on these boards, yet active and blocking
other use. Fix this by disabling UART0 and setting port aliases
to maintain port enumeration to userspace.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ARM SoC folks: please apply this directly to fixes if you're
OK with it.
---
 arch/arm/boot/dts/ste-nomadik-nhk15.dts    | 1 +
 arch/arm/boot/dts/ste-nomadik-s8815.dts    | 4 ++++
 arch/arm/boot/dts/ste-nomadik-stn8815.dtsi | 1 +
 3 files changed, 6 insertions(+)

diff --git a/arch/arm/boot/dts/ste-nomadik-nhk15.dts b/arch/arm/boot/dts/ste-nomadik-nhk15.dts
index 3d0b8755caee..3d25dba143a5 100644
--- a/arch/arm/boot/dts/ste-nomadik-nhk15.dts
+++ b/arch/arm/boot/dts/ste-nomadik-nhk15.dts
@@ -17,6 +17,7 @@
 	};
 
 	aliases {
+		serial1 = &uart1;
 		stmpe-i2c0 = &stmpe0;
 		stmpe-i2c1 = &stmpe1;
 	};
diff --git a/arch/arm/boot/dts/ste-nomadik-s8815.dts b/arch/arm/boot/dts/ste-nomadik-s8815.dts
index 85d3b95dfdba..3c140d05f796 100644
--- a/arch/arm/boot/dts/ste-nomadik-s8815.dts
+++ b/arch/arm/boot/dts/ste-nomadik-s8815.dts
@@ -15,6 +15,10 @@
 		bootargs = "root=/dev/ram0 console=ttyAMA1,115200n8 earlyprintk";
 	};
 
+	aliases {
+		serial1 = &uart1;
+	};
+
 	src at 101e0000 {
 		/* These chrystal drivers are not used on this board */
 		disable-sxtalo;
diff --git a/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi b/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
index 6846e3eb027d..8e601d02ca8c 100644
--- a/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
+++ b/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
@@ -763,6 +763,7 @@
 			clock-names = "uartclk", "apb_pclk";
 			pinctrl-names = "default";
 			pinctrl-0 = <&uart0_default_mux>;
+			status = "disabled";
 		};
 
 		uart1: uart at 101fb000 {
-- 
2.4.3

[PATCH] ARM: nomadik: disable UART0 on Nomadik boards

[Olof Johansson]

On Sat, Jul 25, 2015 at 11:22:03AM +0200, Linus Walleij wrote:
> The UART0 is not used on these boards, yet active and blocking
> other use. Fix this by disabling UART0 and setting port aliases
> to maintain port enumeration to userspace.
> 
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
> ARM SoC folks: please apply this directly to fixes if you're
> OK with it.

Applied, thanks!


-Olof