From: mpa@pengutronix.de (Markus Pargmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2] ARM: dts: ventana: Add ext-reset support
Date: Fri, 29 May 2015 08:17:57 +0200 [thread overview]
Message-ID: <20150529061757.GA10793@pengutronix.de> (raw)
In-Reply-To: <1432853677-5150-3-git-send-email-tharvey@gateworks.com>
Hi,
On Thu, May 28, 2015 at 03:54:37PM -0700, Tim Harvey wrote:
> The Gateworks Ventana boards have a PMIC that can be used to regulate the
> CPU voltage rails for DVFS support. In order to ensure this PMIC is properly
> reset the watchdog needs to be configured to assert its external reset
> signal.
>
> Additionally the pad used for WDOG_B needs to be configured which we add to
> a hog group for lack of a better location.
Why don't you add this as pinctrl of the watchdog device node? It won't
have any influence anyway until the watchdog driver was setup.
Regards,
Markus
>
> Signed-off-by: Tim Harvey <tharvey@gateworks.com>
> ---
> arch/arm/boot/dts/imx6qdl-gw51xx.dtsi | 13 +++++++++++++
> arch/arm/boot/dts/imx6qdl-gw52xx.dtsi | 13 +++++++++++++
> arch/arm/boot/dts/imx6qdl-gw53xx.dtsi | 13 +++++++++++++
> arch/arm/boot/dts/imx6qdl-gw54xx.dtsi | 18 ++++++++++++++++++
> arch/arm/boot/dts/imx6qdl-gw551x.dtsi | 12 ++++++++++++
> arch/arm/boot/dts/imx6qdl-gw552x.dtsi | 13 +++++++++++++
> 6 files changed, 82 insertions(+)
>
> diff --git a/arch/arm/boot/dts/imx6qdl-gw51xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw51xx.dtsi
> index f2867c4..740c6c4 100644
> --- a/arch/arm/boot/dts/imx6qdl-gw51xx.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-gw51xx.dtsi
> @@ -210,8 +210,21 @@
> status = "okay";
> };
>
> +&wdog1 {
> + ext-reset;
> +};
> +
> &iomuxc {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_hog>;
> +
> imx6qdl-gw51xx {
> + pinctrl_hog: hoggrp {
> + fsl,pins = <
> + MX6QDL_PAD_DISP0_DAT8__WDOG1_B 0x1b0b0
> + >;
> + };
> +
> pinctrl_enet: enetgrp {
> fsl,pins = <
> MX6QDL_PAD_RGMII_RXC__RGMII_RXC 0x1b0b0
> diff --git a/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
> index b5756c2..1b06f18 100644
> --- a/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
> @@ -323,8 +323,21 @@
> status = "okay";
> };
>
> +&wdog1 {
> + ext-reset;
> +};
> +
> &iomuxc {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_hog>;
> +
> imx6qdl-gw52xx {
> + pinctrl_hog: hoggrp {
> + fsl,pins = <
> + MX6QDL_PAD_DISP0_DAT8__WDOG1_B 0x1b0b0
> + >;
> + };
> +
> pinctrl_audmux: audmuxgrp {
> fsl,pins = <
> MX6QDL_PAD_SD2_DAT0__AUD4_RXD 0x130b0
> diff --git a/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
> index 86f03c1..65e5c01 100644
> --- a/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
> @@ -329,8 +329,21 @@
> status = "okay";
> };
>
> +&wdog1 {
> + ext-reset;
> +};
> +
> &iomuxc {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_hog>;
> +
> imx6qdl-gw53xx {
> + pinctrl_hog: hoggrp {
> + fsl,pins = <
> + MX6QDL_PAD_DISP0_DAT8__WDOG1_B 0x1b0b0
> + >;
> + };
> +
> pinctrl_audmux: audmuxgrp {
> fsl,pins = <
> MX6QDL_PAD_SD2_DAT0__AUD4_RXD 0x130b0
> diff --git a/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
> index 4a8d97f..f108781 100644
> --- a/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
> @@ -422,8 +422,26 @@
> status = "okay";
> };
>
> +&wdog1 {
> + status = "disabled";
> +};
> +
> +&wdog2 {
> + status = "okay";
> + ext-reset;
> +};
> +
> &iomuxc {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_hog>;
> +
> imx6qdl-gw54xx {
> + pinctrl_hog: hoggrp {
> + fsl,pins = <
> + MX6QDL_PAD_SD1_DAT3__WDOG2_B 0x1b0b0
> + >;
> + };
> +
> pinctrl_audmux: audmuxgrp {
> fsl,pins = <
> MX6QDL_PAD_SD2_DAT0__AUD4_RXD 0x130b0
> diff --git a/arch/arm/boot/dts/imx6qdl-gw551x.dtsi b/arch/arm/boot/dts/imx6qdl-gw551x.dtsi
> index d1866a0..ae3c2a4 100644
> --- a/arch/arm/boot/dts/imx6qdl-gw551x.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-gw551x.dtsi
> @@ -227,8 +227,20 @@
> status = "okay";
> };
>
> +&wdog1 {
> + ext-reset;
> +};
> +
> &iomuxc {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_hog>;
> imx6qdl-gw51xx {
> + pinctrl_hog: hoggrp {
> + fsl,pins = <
> + MX6QDL_PAD_DISP0_DAT8__WDOG1_B 0x1b0b0
> + >;
> + };
> +
> pinctrl_flexcan1: flexcan1grp {
> fsl,pins = <
> MX6QDL_PAD_KEY_ROW2__FLEXCAN1_RX 0x1b0b1
> diff --git a/arch/arm/boot/dts/imx6qdl-gw552x.dtsi b/arch/arm/boot/dts/imx6qdl-gw552x.dtsi
> index 5c6587f..52eaf42 100644
> --- a/arch/arm/boot/dts/imx6qdl-gw552x.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-gw552x.dtsi
> @@ -185,8 +185,21 @@
> status = "okay";
> };
>
> +&wdog1 {
> + ext-reset;
> +};
> +
> &iomuxc {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_hog>;
> +
> imx6qdl-gw552x {
> + pinctrl_hog: hoggrp {
> + fsl,pins = <
> + MX6QDL_PAD_DISP0_DAT8__WDOG1_B 0x1b0b0
> + >;
> + };
> +
> pinctrl_gpio_leds: gpioledsgrp {
> fsl,pins = <
> MX6QDL_PAD_KEY_COL0__GPIO4_IO06 0x1b0b0
> --
> 1.9.1
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
--
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next prev parent reply other threads:[~2015-05-29 6:17 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-28 22:54 [PATCH 0/2] imx6: Implement external watchdog reset Tim Harvey
2015-05-28 22:54 ` [PATCH 1/2] watchdog: imx2_wdt: add external reset support via 'ext-reset' dt property Tim Harvey
2015-05-29 16:37 ` Lucas Stach
2015-05-28 22:54 ` [PATCH 2/2] ARM: dts: ventana: Add ext-reset support Tim Harvey
2015-05-29 6:17 ` Markus Pargmann [this message]
2015-05-29 14:01 ` Tim Harvey
2015-06-04 20:15 ` [PATCH v2 0/2] imx6: Implement external watchdog reset Tim Harvey
2015-06-04 20:15 ` [PATCH v2 1/2] watchdog: imx2_wdt: add external reset support via 'ext-reset-output' dt prop Tim Harvey
2015-06-05 16:38 ` Zhi Li
2015-06-25 23:22 ` Tim Harvey
2015-06-22 9:22 ` Lucas Stach
2015-06-28 15:07 ` Shawn Guo
2015-06-29 1:17 ` Shawn Guo
2015-07-02 16:49 ` Tim Harvey
2015-07-03 1:02 ` Shawn Guo
2015-07-28 15:27 ` [PATCH v3 0/2] imx6: Implement external watchdog reset Tim Harvey
2015-07-28 15:27 ` [PATCH v3 1/2] watchdog: imx2_wdt: add external reset support via 'ext-reset-output' dt prop Tim Harvey
2015-08-05 13:01 ` Shawn Guo
2015-10-13 14:11 ` Tim Harvey
2015-07-28 15:27 ` [PATCH v3 2/2] ARM: dts: ventana: Add ext-reset support Tim Harvey
2015-10-30 17:00 ` [PATCH v3 0/2] imx6: Implement external watchdog reset Akshay Bhat
2015-10-30 17:31 ` Tim Harvey
2015-06-04 20:16 ` [PATCH v2 2/2] ARM: dts: ventana: Add ext-reset support Tim Harvey
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