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ARM: dts: imx: ventana: Add ext watchdog reset

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bc677ff42e adds a device-tree property
to specify that an external watchdog reset is used to reset other
portions of the board and not just the IMX6 SoC.

This adds the property to the proper watchdog as well as the pinmux for
the Gateworks Ventana boards that use this external watchdog reset to
reset the PMIC which will reset all the PMIC power rails and not just
a chip-level IMX6 reset. This helps to work around various system issues
that can cause a hang when coming out of reset.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Tim Harvey 2016-06-29 06:31:03 -07:00 committed by Shawn Guo
parent 29b4817d40
commit 51a012b762
6 changed files with 77 additions and 0 deletions
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12
arch/arm/boot/dts/imx6qdl-gw51xx.dtsi
View File

@ -228,6 +228,12 @@
status = "okay";
};
&wdog1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_wdog>;
fsl,ext-reset-output;
};
&iomuxc {
imx6qdl-gw51xx {
pinctrl_enet: enetgrp {
@ -364,5 +370,11 @@
MX6QDL_PAD_EIM_D22__GPIO3_IO22 0x1b0b0 /* OTG_PWR_EN */
>;
};
pinctrl_wdog: wdoggrp {
fsl,pins = <
MX6QDL_PAD_DISP0_DAT8__WDOG1_B 0x1b0b0
>;
};
};
};

12
arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
View File

@ -353,6 +353,12 @@
status = "okay";
};
&wdog1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_wdog>;
fsl,ext-reset-output;
};
&iomuxc {
imx6qdl-gw52xx {
pinctrl_audmux: audmuxgrp {
@ -549,5 +555,11 @@
MX6QDL_PAD_NANDF_CS1__SD3_VSELECT 0x170f9
>;
};
pinctrl_wdog: wdoggrp {
fsl,pins = <
MX6QDL_PAD_DISP0_DAT8__WDOG1_B 0x1b0b0
>;
};
};
};

12
arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
View File

@ -351,6 +351,12 @@
status = "okay";
};
&wdog1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_wdog>;
fsl,ext-reset-output;
};
&iomuxc {
imx6qdl-gw53xx {
pinctrl_audmux: audmuxgrp {
@ -539,5 +545,11 @@
MX6QDL_PAD_NANDF_CS1__SD3_VSELECT 0x170f9
>;
};
pinctrl_wdog: wdoggrp {
fsl,pins = <
MX6QDL_PAD_DISP0_DAT8__WDOG1_B 0x1b0b0
>;
};
};
};

17
arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
View File

@ -453,6 +453,17 @@
status = "okay";
};
&wdog1 {
status = "disabled";
};
&wdog2 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_wdog>;
fsl,ext-reset-output;
status = "okay";
};
&iomuxc {
imx6qdl-gw54xx {
pinctrl_audmux: audmuxgrp {
@ -654,5 +665,11 @@
MX6QDL_PAD_NANDF_CS1__SD3_VSELECT 0x170f9
>;
};
pinctrl_wdog: wdoggrp {
fsl,pins = <
MX6QDL_PAD_SD1_DAT3__WDOG2_B 0x1b0b0
>;
};
};
};

12
arch/arm/boot/dts/imx6qdl-gw551x.dtsi
View File

@ -239,6 +239,12 @@
status = "okay";
};
&wdog1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_wdog>;
fsl,ext-reset-output;
};
&iomuxc {
imx6qdl-gw51xx {
pinctrl_flexcan1: flexcan1grp {
@ -333,5 +339,11 @@
MX6QDL_PAD_GPIO_1__USB_OTG_ID 0x17059
>;
};
pinctrl_wdog: wdoggrp {
fsl,pins = <
MX6QDL_PAD_DISP0_DAT8__WDOG1_B 0x1b0b0
>;
};
};
};

12
arch/arm/boot/dts/imx6qdl-gw552x.dtsi
View File

@ -197,6 +197,12 @@
status = "okay";
};
&wdog1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_wdog>;
fsl,ext-reset-output;
};
&iomuxc {
imx6qdl-gw552x {
pinctrl_gpio_leds: gpioledsgrp {
@ -286,5 +292,11 @@
MX6QDL_PAD_KEY_ROW1__UART5_RX_DATA 0x1b0b1
>;
};
pinctrl_wdog: wdoggrp {
fsl,pins = <
MX6QDL_PAD_DISP0_DAT8__WDOG1_B 0x1b0b0
>;
};
};
};