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ARM: bcm283x: Define UART pinmuxing on board level

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Until RPI 3 and Zero W the pl011 (uart0) was always on pin 14/15. So in
order to take care of them and other boards in the future,
we need to define UART pinmuxing on board level.

This work based on Eric Anholt's patch "ARM: bcm2385: Don't force pl011
onto pins 14/15." and Fabian Vogt's patch "ARM64: dts: bcm2837: assign
uart0 to BT and uart1 to pin headers".

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Stefan Wahren 2017-07-30 19:10:32 +02:00 committed by Eric Anholt
parent 3bfe25fa9f
commit 4188ea2aeb
9 changed files with 53 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/arm/boot/dts/bcm2835-rpi-a-plus.dts
View File

@ -99,3 +99,9 @@
&hdmi {
hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
};
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_gpio14>;
status = "okay";
};

6
arch/arm/boot/dts/bcm2835-rpi-a.dts
View File

@ -94,3 +94,9 @@
&hdmi {
hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
};
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_gpio14>;
status = "okay";
};

6
arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
View File

@ -101,3 +101,9 @@
&hdmi {
hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
};
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_gpio14>;
status = "okay";
};

6
arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts
View File

@ -94,3 +94,9 @@
&hdmi {
hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
};
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_gpio14>;
status = "okay";
};

6
arch/arm/boot/dts/bcm2835-rpi-b.dts
View File

@ -89,3 +89,9 @@
&hdmi {
hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
};
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_gpio14>;
status = "okay";
};

6
arch/arm/boot/dts/bcm2835-rpi-zero.dts
View File

@ -103,3 +103,9 @@
&hdmi {
hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
};
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_gpio14>;
status = "okay";
};

2
arch/arm/boot/dts/bcm2835-rpi.dtsi
View File

@ -39,7 +39,7 @@
};
alt0: alt0 {
brcm,pins = <4 5 7 8 9 10 11 14 15>;
brcm,pins = <4 5 7 8 9 10 11>;
brcm,function = <BCM2835_FSEL_ALT0>;
};
};

6
arch/arm/boot/dts/bcm2836-rpi-2-b.dts
View File

@ -39,3 +39,9 @@
&hdmi {
hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
};
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_gpio14>;
status = "okay";
};

10
arch/arm/boot/dts/bcm2837-rpi-3-b.dts
View File

@ -19,7 +19,17 @@
};
};
/* uart0 communicates with the BT module */
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_gpio32 &gpclk2_gpio43>;
status = "okay";
};
/* uart1 is mapped to the pin header */
&uart1 {
pinctrl-names = "default";
pinctrl-0 = <&uart1_gpio14>;
status = "okay";
};