ARM: dts: dra7x-evm: Prevent glitch on DCAN1 pinmux
authorRoger Quadros <rogerq@ti.com>
Tue, 7 Jul 2015 14:27:57 +0000 (17:27 +0300)
committerMarc Kleine-Budde <mkl@pengutronix.de>
Sun, 12 Jul 2015 19:12:54 +0000 (21:12 +0200)
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>
arch/arm/boot/dts/dra7-evm.dts
arch/arm/boot/dts/dra72-evm.dts

index aa465904f6cc420ecad93f006bc5e622d8e70b36..096f68be99e2b962a9b9ee86a22a978509477aad 100644 (file)
 
 &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>;
 };
index 4e1b60581782c43fc40c9b167e45f90e64024068..803738414086a76f80a8e669142b2caaaa400092 100644 (file)
 
 &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 {