* [PATCH] ARM: bcm2835: add label for uart0
@ 2015-10-02 18:31 ` Stefan Wahren
0 siblings, 0 replies; 10+ messages in thread
From: Stefan Wahren @ 2015-10-02 18:31 UTC (permalink / raw)
To: Stephen Warren, Lee Jones, Eric Anholt
Cc: Mark Rutland, Pawel Moll, Ian Campbell, Rob Herring,
linux-rpi-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA, Stefan Wahren
This patch adds a label for uart0 to allow changing of uart0 pins.
Signed-off-by: Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org>
---
arch/arm/boot/dts/bcm2835.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi
index 301c73f..2029394 100644
--- a/arch/arm/boot/dts/bcm2835.dtsi
+++ b/arch/arm/boot/dts/bcm2835.dtsi
@@ -92,7 +92,7 @@
#interrupt-cells = <2>;
};
- uart@7e201000 {
+ uart0: uart@7e201000 {
compatible = "brcm,bcm2835-pl011", "arm,pl011", "arm,primecell";
reg = <0x7e201000 0x1000>;
interrupts = <2 25>;
--
1.7.9.5
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^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH] ARM: bcm2835: add label for uart0
@ 2015-10-02 18:31 ` Stefan Wahren
0 siblings, 0 replies; 10+ messages in thread
From: Stefan Wahren @ 2015-10-02 18:31 UTC (permalink / raw)
To: linux-arm-kernel
This patch adds a label for uart0 to allow changing of uart0 pins.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
arch/arm/boot/dts/bcm2835.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi
index 301c73f..2029394 100644
--- a/arch/arm/boot/dts/bcm2835.dtsi
+++ b/arch/arm/boot/dts/bcm2835.dtsi
@@ -92,7 +92,7 @@
#interrupt-cells = <2>;
};
- uart at 7e201000 {
+ uart0: uart at 7e201000 {
compatible = "brcm,bcm2835-pl011", "arm,pl011", "arm,primecell";
reg = <0x7e201000 0x1000>;
interrupts = <2 25>;
--
1.7.9.5
^ permalink raw reply related [flat|nested] 10+ messages in thread
* Re: [PATCH] ARM: bcm2835: add label for uart0
2015-10-02 18:31 ` Stefan Wahren
@ 2015-10-06 21:53 ` Eric Anholt
-1 siblings, 0 replies; 10+ messages in thread
From: Eric Anholt @ 2015-10-06 21:53 UTC (permalink / raw)
To: Stephen Warren, Lee Jones
Cc: Mark Rutland, Pawel Moll, Ian Campbell, Rob Herring,
linux-rpi-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA, Stefan Wahren
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Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org> writes:
> This patch adds a label for uart0 to allow changing of uart0 pins.
>
> Signed-off-by: Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org>
This patch seems innocuous, but could you clarify for me how exactly you
change the uart0 pins, and why one would do that?
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^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH] ARM: bcm2835: add label for uart0
@ 2015-10-06 21:53 ` Eric Anholt
0 siblings, 0 replies; 10+ messages in thread
From: Eric Anholt @ 2015-10-06 21:53 UTC (permalink / raw)
To: linux-arm-kernel
Stefan Wahren <stefan.wahren@i2se.com> writes:
> This patch adds a label for uart0 to allow changing of uart0 pins.
>
> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
This patch seems innocuous, but could you clarify for me how exactly you
change the uart0 pins, and why one would do that?
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH] ARM: bcm2835: add label for uart0
2015-10-06 21:53 ` Eric Anholt
@ 2015-10-07 2:26 ` Stephen Warren
-1 siblings, 0 replies; 10+ messages in thread
From: Stephen Warren @ 2015-10-07 2:26 UTC (permalink / raw)
To: Eric Anholt
Cc: Stefan Wahren, Lee Jones, Mark Rutland, Pawel Moll, Ian Campbell,
Rob Herring, linux-rpi-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA
On 10/06/2015 03:53 PM, Eric Anholt wrote:
> Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org> writes:
>
>> This patch adds a label for uart0 to allow changing of uart0
>> pins.
>>
>> Signed-off-by: Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org>
>
> This patch seems innocuous, but could you clarify for me how
> exactly you change the uart0 pins, and why one would do that?
I /assume/ this is so that some other DT file (that includes the
edited file) can add some pinctrl-related properties to this DT node,
using syntax such as:
&uart0 {
new content;
};
If so, the patch,
Acked-by: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
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^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH] ARM: bcm2835: add label for uart0
@ 2015-10-07 2:26 ` Stephen Warren
0 siblings, 0 replies; 10+ messages in thread
From: Stephen Warren @ 2015-10-07 2:26 UTC (permalink / raw)
To: linux-arm-kernel
On 10/06/2015 03:53 PM, Eric Anholt wrote:
> Stefan Wahren <stefan.wahren@i2se.com> writes:
>
>> This patch adds a label for uart0 to allow changing of uart0
>> pins.
>>
>> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
>
> This patch seems innocuous, but could you clarify for me how
> exactly you change the uart0 pins, and why one would do that?
I /assume/ this is so that some other DT file (that includes the
edited file) can add some pinctrl-related properties to this DT node,
using syntax such as:
&uart0 {
new content;
};
If so, the patch,
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH] ARM: bcm2835: add label for uart0
2015-10-07 2:26 ` Stephen Warren
@ 2015-10-07 6:47 ` Stefan Wahren
-1 siblings, 0 replies; 10+ messages in thread
From: Stefan Wahren @ 2015-10-07 6:47 UTC (permalink / raw)
To: Stephen Warren, Eric Anholt
Cc: Mark Rutland, Pawel Moll, Ian Campbell, Lee Jones,
devicetree-u79uwXL29TY76Z2rM5mHXA, Rob Herring,
linux-rpi-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r
Am 07.10.2015 um 04:26 schrieb Stephen Warren:
> On 10/06/2015 03:53 PM, Eric Anholt wrote:
>> Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org> writes:
>>
>>> This patch adds a label for uart0 to allow changing of uart0
>>> pins.
>>>
>>> Signed-off-by: Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org>
>> This patch seems innocuous, but could you clarify for me how
>> exactly you change the uart0 pins, and why one would do that?
> I /assume/ this is so that some other DT file (that includes the
> edited file) can add some pinctrl-related properties to this DT node,
> using syntax such as:
>
> &uart0 {
> new content;
> };
>
> If so, the patch,
> Acked-by: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
Your assumption is correct. In case the UART should be used on a custom
board with Raspberry Pi Compute Module and a microcontroller this change
is necessary to reference the UART:
&gpio {
// ...
uart0_pins: uart0_pins {
brcm,pins = <36 37>;
brcm,function = <BCM2835_FSEL_ALT2>;
};
}
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_pins>;
status = "okay";
};
Thanks
Stefan
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^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH] ARM: bcm2835: add label for uart0
@ 2015-10-07 6:47 ` Stefan Wahren
0 siblings, 0 replies; 10+ messages in thread
From: Stefan Wahren @ 2015-10-07 6:47 UTC (permalink / raw)
To: linux-arm-kernel
Am 07.10.2015 um 04:26 schrieb Stephen Warren:
> On 10/06/2015 03:53 PM, Eric Anholt wrote:
>> Stefan Wahren <stefan.wahren@i2se.com> writes:
>>
>>> This patch adds a label for uart0 to allow changing of uart0
>>> pins.
>>>
>>> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
>> This patch seems innocuous, but could you clarify for me how
>> exactly you change the uart0 pins, and why one would do that?
> I /assume/ this is so that some other DT file (that includes the
> edited file) can add some pinctrl-related properties to this DT node,
> using syntax such as:
>
> &uart0 {
> new content;
> };
>
> If so, the patch,
> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Your assumption is correct. In case the UART should be used on a custom
board with Raspberry Pi Compute Module and a microcontroller this change
is necessary to reference the UART:
&gpio {
// ...
uart0_pins: uart0_pins {
brcm,pins = <36 37>;
brcm,function = <BCM2835_FSEL_ALT2>;
};
}
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_pins>;
status = "okay";
};
Thanks
Stefan
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH] ARM: bcm2835: add label for uart0
2015-10-02 18:31 ` Stefan Wahren
@ 2015-10-15 0:33 ` Eric Anholt
-1 siblings, 0 replies; 10+ messages in thread
From: Eric Anholt @ 2015-10-15 0:33 UTC (permalink / raw)
To: Stephen Warren, Lee Jones
Cc: Mark Rutland, Pawel Moll, Ian Campbell, Rob Herring,
linux-rpi-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA, Stefan Wahren
[-- Attachment #1: Type: text/plain, Size: 262 bytes --]
Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org> writes:
> This patch adds a label for uart0 to allow changing of uart0 pins.
>
> Signed-off-by: Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org>
Pulled to bcm2835-dt-next with Stephen's ack.
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^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH] ARM: bcm2835: add label for uart0
@ 2015-10-15 0:33 ` Eric Anholt
0 siblings, 0 replies; 10+ messages in thread
From: Eric Anholt @ 2015-10-15 0:33 UTC (permalink / raw)
To: linux-arm-kernel
Stefan Wahren <stefan.wahren@i2se.com> writes:
> This patch adds a label for uart0 to allow changing of uart0 pins.
>
> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Pulled to bcm2835-dt-next with Stephen's ack.
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2015-10-02 18:31 [PATCH] ARM: bcm2835: add label for uart0 Stefan Wahren
2015-10-02 18:31 ` Stefan Wahren
[not found] ` <1443810675-25558-1-git-send-email-stefan.wahren-eS4NqCHxEME@public.gmane.org>
2015-10-06 21:53 ` Eric Anholt
2015-10-06 21:53 ` Eric Anholt
[not found] ` <87oagbhdfb.fsf-omZaPlIz5HhaEpDpdNBo/KxOck334EZe@public.gmane.org>
2015-10-07 2:26 ` Stephen Warren
2015-10-07 2:26 ` Stephen Warren
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2015-10-07 6:47 ` Stefan Wahren
2015-10-07 6:47 ` Stefan Wahren
2015-10-15 0:33 ` Eric Anholt
2015-10-15 0:33 ` Eric Anholt
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