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ARM: dts: dra7x-evm: Prevent glitch on DCAN1 pinmux

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Driver core sets "default" pinmux on on probe and CAN driver
sets "sleep" pinmux during register. This causes a small window
where the CAN pins are in "default" state with the DCAN module
being disabled.

Change the "default" state to be like sleep so this glitch is
avoided. Add a new "active" state that is used by the driver
when CAN is actually active.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Roger Quadros 2015-07-07 17:27:57 +03:00 committed by Marc Kleine-Budde
parent 0333651911
commit 2acb5c301e
2 changed files with 6 additions and 4 deletions
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5
arch/arm/boot/dts/dra7-evm.dts
View File

@ -686,7 +686,8 @@
&dcan1 {
status = "ok";
pinctrl-names = "default", "sleep";
pinctrl-0 = <&dcan1_pins_default>;
pinctrl-names = "default", "sleep", "active";
pinctrl-0 = <&dcan1_pins_sleep>;
pinctrl-1 = <&dcan1_pins_sleep>;
pinctrl-2 = <&dcan1_pins_default>;
};

5
arch/arm/boot/dts/dra72-evm.dts
View File

@ -587,9 +587,10 @@
&dcan1 {
status = "ok";
pinctrl-names = "default", "sleep";
pinctrl-0 = <&dcan1_pins_default>;
pinctrl-names = "default", "sleep", "active";
pinctrl-0 = <&dcan1_pins_sleep>;
pinctrl-1 = <&dcan1_pins_sleep>;
pinctrl-2 = <&dcan1_pins_default>;
};
&qspi {