> Subject: [PATCH] arm: dts: imx8m*-venice: add gpio hog support
>
> Add gpio hog support for board-specific gpio lines:
> - put hogs in u-boot.dtsi so as to keep the regular dts files
> in sync with the kernel. The hogs will not be put in the kernel
> as that makes them un-usable by userspace as well as
> re-initializes them to dt defaults overriding changes which may
> have been done by bootloader commands.
> - specify gpio names and initial config
> - enable GPIO_HOG
>
> Signed-off-by: Tim Harvey <thar...@gateworks.com>
Acked-by: Peng Fan <peng....@nxp.com>
> ---
> .../dts/imx8mm-venice-gw71xx-0x-u-boot.dtsi | 46 ++++++
> .../dts/imx8mm-venice-gw72xx-0x-u-boot.dtsi | 81 ++++++++++
> .../dts/imx8mm-venice-gw73xx-0x-u-boot.dtsi | 81 ++++++++++
> arch/arm/dts/imx8mm-venice-gw7901-u-boot.dtsi | 118 ++++++++++++++
> arch/arm/dts/imx8mm-venice-gw7902-u-boot.dtsi | 150
> ++++++++++++++++++ arch/arm/dts/imx8mm-venice-gw7903-u-boot.dtsi |
> 83 ++++++++++ arch/arm/dts/imx8mn-venice-gw7902-u-boot.dtsi | 108
> +++++++++++++
> configs/imx8mm_venice_defconfig | 1 +
> configs/imx8mn_venice_defconfig | 1 +
> 9 files changed, 669 insertions(+)
>
> diff --git a/arch/arm/dts/imx8mm-venice-gw71xx-0x-u-boot.dtsi
> b/arch/arm/dts/imx8mm-venice-gw71xx-0x-u-boot.dtsi
> index f5d52c2fe259..b3592331c72b 100644
> --- a/arch/arm/dts/imx8mm-venice-gw71xx-0x-u-boot.dtsi
> +++ b/arch/arm/dts/imx8mm-venice-gw71xx-0x-u-boot.dtsi
> @@ -3,3 +3,49 @@
> * Copyright 2021 Gateworks Corporation
> */
> #include "imx8mm-venice-gw700x-u-boot.dtsi"
> +
> +&gpio1 {
> + pci_usb_sel {
> + gpio-hog;
> + output-low;
> + gpios = <6 GPIO_ACTIVE_HIGH>;
> + line-name = "pci_usb_sel";
> + };
> +
> + dio_0 {
> + gpio-hog;
> + input;
> + gpios = <7 GPIO_ACTIVE_HIGH>;
> + line-name = "dio0";
> + };
> +
> + dio_1 {
> + gpio-hog;
> + input;
> + gpios = <9 GPIO_ACTIVE_HIGH>;
> + line-name = "dio1";
> + };
> +};
> +
> +&gpio4 {
> + dio_2 {
> + gpio-hog;
> + input;
> + gpios = <3 GPIO_ACTIVE_HIGH>;
> + line-name = "dio2";
> + };
> +
> + dio_3 {
> + gpio-hog;
> + input;
> + gpios = <4 GPIO_ACTIVE_HIGH>;
> + line-name = "dio3";
> + };
> +
> + pci_wdis {
> + gpio-hog;
> + output-high;
> + gpios = <7 GPIO_ACTIVE_HIGH>;
> + line-name = "pci_wdis#";
> + };
> +};
> diff --git a/arch/arm/dts/imx8mm-venice-gw72xx-0x-u-boot.dtsi
> b/arch/arm/dts/imx8mm-venice-gw72xx-0x-u-boot.dtsi
> index f5d52c2fe259..92e44d4ba96b 100644
> --- a/arch/arm/dts/imx8mm-venice-gw72xx-0x-u-boot.dtsi
> +++ b/arch/arm/dts/imx8mm-venice-gw72xx-0x-u-boot.dtsi
> @@ -3,3 +3,84 @@
> * Copyright 2021 Gateworks Corporation
> */
> #include "imx8mm-venice-gw700x-u-boot.dtsi"
> +
> +&gpio1 {
> + rs485_term {
> + gpio-hog;
> + output-low;
> + gpios = <0 GPIO_ACTIVE_HIGH>;
> + line-name = "rs485_term";
> + };
> +
> + mipi_gpio4 {
> + gpio-hog;
> + input;
> + gpios = <1 GPIO_ACTIVE_HIGH>;
> + line-name = "mipi_gpio4";
> + };
> +
> + pci_usb_sel {
> + gpio-hog;
> + output-low;
> + gpios = <6 GPIO_ACTIVE_HIGH>;
> + line-name = "pci_usb_sel";
> + };
> +
> + dio_0 {
> + gpio-hog;
> + input;
> + gpios = <7 GPIO_ACTIVE_HIGH>;
> + line-name = "dio0";
> + };
> +
> + dio_1 {
> + gpio-hog;
> + input;
> + gpios = <9 GPIO_ACTIVE_HIGH>;
> + line-name = "dio1";
> + };
> +};
> +
> +&gpio4 {
> + rs485_en {
> + gpio-hog;
> + output-low;
> + gpios = <0 GPIO_ACTIVE_HIGH>;
> + line-name = "rs485_en";
> + };
> +
> + mipi_gpio3 {
> + gpio-hog;
> + input;
> + gpios = <1 GPIO_ACTIVE_HIGH>;
> + line-name = "mipi_gpio3";
> + };
> +
> + rs485_half {
> + gpio-hog;
> + output-low;
> + gpios = <2 GPIO_ACTIVE_HIGH>;
> + line-name = "rs485_hd";
> + };
> +
> + mipi_gpio2 {
> + gpio-hog;
> + input;
> + gpios = <3 GPIO_ACTIVE_HIGH>;
> + line-name = "mipi_gpio2";
> + };
> +
> + mipi_gpio1 {
> + gpio-hog;
> + input;
> + gpios = <4 GPIO_ACTIVE_HIGH>;
> + line-name = "mipi_gpio1";
> + };
> +
> + pci_wdis {
> + gpio-hog;
> + output-high;
> + gpios = <7 GPIO_ACTIVE_HIGH>;
> + line-name = "pci_wdis#";
> + };
> +};
> diff --git a/arch/arm/dts/imx8mm-venice-gw73xx-0x-u-boot.dtsi
> b/arch/arm/dts/imx8mm-venice-gw73xx-0x-u-boot.dtsi
> index f5d52c2fe259..92e44d4ba96b 100644
> --- a/arch/arm/dts/imx8mm-venice-gw73xx-0x-u-boot.dtsi
> +++ b/arch/arm/dts/imx8mm-venice-gw73xx-0x-u-boot.dtsi
> @@ -3,3 +3,84 @@
> * Copyright 2021 Gateworks Corporation
> */
> #include "imx8mm-venice-gw700x-u-boot.dtsi"
> +
> +&gpio1 {
> + rs485_term {
> + gpio-hog;
> + output-low;
> + gpios = <0 GPIO_ACTIVE_HIGH>;
> + line-name = "rs485_term";
> + };
> +
> + mipi_gpio4 {
> + gpio-hog;
> + input;
> + gpios = <1 GPIO_ACTIVE_HIGH>;
> + line-name = "mipi_gpio4";
> + };
> +
> + pci_usb_sel {
> + gpio-hog;
> + output-low;
> + gpios = <6 GPIO_ACTIVE_HIGH>;
> + line-name = "pci_usb_sel";
> + };
> +
> + dio_0 {
> + gpio-hog;
> + input;
> + gpios = <7 GPIO_ACTIVE_HIGH>;
> + line-name = "dio0";
> + };
> +
> + dio_1 {
> + gpio-hog;
> + input;
> + gpios = <9 GPIO_ACTIVE_HIGH>;
> + line-name = "dio1";
> + };
> +};
> +
> +&gpio4 {
> + rs485_en {
> + gpio-hog;
> + output-low;
> + gpios = <0 GPIO_ACTIVE_HIGH>;
> + line-name = "rs485_en";
> + };
> +
> + mipi_gpio3 {
> + gpio-hog;
> + input;
> + gpios = <1 GPIO_ACTIVE_HIGH>;
> + line-name = "mipi_gpio3";
> + };
> +
> + rs485_half {
> + gpio-hog;
> + output-low;
> + gpios = <2 GPIO_ACTIVE_HIGH>;
> + line-name = "rs485_hd";
> + };
> +
> + mipi_gpio2 {
> + gpio-hog;
> + input;
> + gpios = <3 GPIO_ACTIVE_HIGH>;
> + line-name = "mipi_gpio2";
> + };
> +
> + mipi_gpio1 {
> + gpio-hog;
> + input;
> + gpios = <4 GPIO_ACTIVE_HIGH>;
> + line-name = "mipi_gpio1";
> + };
> +
> + pci_wdis {
> + gpio-hog;
> + output-high;
> + gpios = <7 GPIO_ACTIVE_HIGH>;
> + line-name = "pci_wdis#";
> + };
> +};
> diff --git a/arch/arm/dts/imx8mm-venice-gw7901-u-boot.dtsi
> b/arch/arm/dts/imx8mm-venice-gw7901-u-boot.dtsi
> index a801ee1deb93..11c773bb70d6 100644
> --- a/arch/arm/dts/imx8mm-venice-gw7901-u-boot.dtsi
> +++ b/arch/arm/dts/imx8mm-venice-gw7901-u-boot.dtsi
> @@ -5,6 +5,124 @@
>
> #include "imx8mm-venice-u-boot.dtsi"
>
> +&gpio1 {
> + uart1_rs422 {
> + gpio-hog;
> + output-high;
> + gpios = <0 GPIO_ACTIVE_HIGH>;
> + line-name = "uart1_rs422#";
> + };
> +
> + uart1rs485 {
> + gpio-hog;
> + output-high;
> + gpios = <3 GPIO_ACTIVE_HIGH>;
> + line-name = "uart1_rs485#";
> + };
> +
> + uart1rs232 {
> + gpio-hog;
> + output-high;
> + gpios = <5 GPIO_ACTIVE_HIGH>;
> + line-name = "uart1_rs232#";
> + };
> +
> + dig1in {
> + gpio-hog;
> + input;
> + gpios = <6 GPIO_ACTIVE_HIGH>;
> + line-name = "dig1_in";
> + };
> +
> + dig1out {
> + gpio-hog;
> + output-low;
> + gpios = <7 GPIO_ACTIVE_HIGH>;
> + line-name = "dig1_out";
> + };
> +};
> +
> +&gpio4 {
> + uart3_rs232 {
> + gpio-hog;
> + output-high;
> + gpios = <6 GPIO_ACTIVE_HIGH>;
> + line-name = "uart3_rs232#";
> + };
> +
> + uart3_rs422 {
> + gpio-hog;
> + output-high;
> + gpios = <7 GPIO_ACTIVE_HIGH>;
> + line-name = "uart3_rs422#";
> + };
> +
> + uart3_rs485 {
> + gpio-hog;
> + output-high;
> + gpios = <8 GPIO_ACTIVE_HIGH>;
> + line-name = "uart3_rs485#";
> + };
> +
> + uart4_rs485 {
> + gpio-hog;
> + output-high;
> + gpios = <27 GPIO_ACTIVE_HIGH>;
> + line-name = "uart4_rs485#";
> + };
> +
> + sim1det {
> + gpio-hog;
> + input;
> + gpios = <29 GPIO_ACTIVE_HIGH>;
> + line-name = "sim1_det";
> + };
> +
> + sim2det {
> + gpio-hog;
> + input;
> + gpios = <30 GPIO_ACTIVE_HIGH>;
> + line-name = "sim2_det";
> + };
> +};
> +
> +&gpio5 {
> + dig2out {
> + gpio-hog;
> + output-low;
> + gpios = <3 GPIO_ACTIVE_HIGH>;
> + line-name = "dig2_out";
> + };
> +
> + dig2in {
> + gpio-hog;
> + input;
> + gpios = <4 GPIO_ACTIVE_HIGH>;
> + line-name = "dig2_in";
> + };
> +
> + sim2sel {
> + gpio-hog;
> + output-low;
> + gpios = <5 GPIO_ACTIVE_HIGH>;
> + line-name = "sim2_sel";
> + };
> +
> + uart4_rs232 {
> + gpio-hog;
> + output-high;
> + gpios = <10 GPIO_ACTIVE_HIGH>;
> + line-name = "uart4_rs232#";
> + };
> +
> + uart4_rs422 {
> + gpio-hog;
> + output-high;
> + gpios = <13 GPIO_ACTIVE_HIGH>;
> + line-name = "uart4_rs422#";
> + };
> +};
> +
> &fec1 {
> phy-reset-gpios = <&gpio4 19 GPIO_ACTIVE_LOW>;
> phy-reset-duration = <1>;
> diff --git a/arch/arm/dts/imx8mm-venice-gw7902-u-boot.dtsi
> b/arch/arm/dts/imx8mm-venice-gw7902-u-boot.dtsi
> index d0e5d6c5b634..1e1769f55127 100644
> --- a/arch/arm/dts/imx8mm-venice-gw7902-u-boot.dtsi
> +++ b/arch/arm/dts/imx8mm-venice-gw7902-u-boot.dtsi
> @@ -5,6 +5,156 @@
>
> #include "imx8mm-venice-u-boot.dtsi"
>
> +&gpio1 {
> + m2rst {
> + gpio-hog;
> + output-low;
> + gpios = <13 GPIO_ACTIVE_HIGH>;
> + line-name = "m2_reset";
> + };
> +
> + m2wdis {
> + gpio-hog;
> + output-high;
> + gpios = <15 GPIO_ACTIVE_HIGH>;
> + line-name = "m2_wdis#";
> + };
> +};
> +
> +&gpio2 {
> + uart2en {
> + gpio-hog;
> + output-high;
> + gpios = <8 GPIO_ACTIVE_HIGH>;
> + line-name = "uart2_en#";
> + };
> +};
> +
> +&gpio3 {
> + m2gdis {
> + gpio-hog;
> + output-high;
> + gpios = <1 GPIO_ACTIVE_HIGH>;
> + line-name = "m2_gdis#";
> + };
> +
> + m2off {
> + gpio-hog;
> + output-high;
> + gpios = <7 GPIO_ACTIVE_HIGH>;
> + line-name = "m2_off#";
> + };
> +};
> +
> +&gpio4 {
> + ampgpio3 {
> + gpio-hog;
> + input;
> + gpios = <11 GPIO_ACTIVE_HIGH>;
> + line-name = "amp_gpio3";
> + };
> +
> + ampgpio2 {
> + gpio-hog;
> + input;
> + gpios = <12 GPIO_ACTIVE_HIGH>;
> + line-name = "amp_gpio2";
> + };
> +
> + ampgpio1 {
> + gpio-hog;
> + input;
> + gpios = <14 GPIO_ACTIVE_HIGH>;
> + line-name = "amp_gpio1";
> + };
> +
> + ltrpwr {
> + gpio-hog;
> + output-low;
> + gpios = <16 GPIO_ACTIVE_HIGH>;
> + line-name = "lte_pwr#";
> + };
> +
> + lterst {
> + gpio-hog;
> + output-low;
> + gpios = <17 GPIO_ACTIVE_HIGH>;
> + line-name = "lte_rst";
> + };
> +
> + ampgpio4 {
> + gpio-hog;
> + input;
> + gpios = <20 GPIO_ACTIVE_HIGH>;
> + line-name = "amp_gpio4";
> + };
> +
> + appgpio1 {
> + gpio-hog;
> + input;
> + gpios = <21 GPIO_ACTIVE_HIGH>;
> + line-name = "app_gpio1";
> + };
> +
> + uart1rs485 {
> + gpio-hog;
> + output-low;
> + gpios = <23 GPIO_ACTIVE_HIGH>;
> + line-name = "uart1_rs485";
> + };
> +
> + uart1term {
> + gpio-hog;
> + output-low;
> + gpios = <25 GPIO_ACTIVE_HIGH>;
> + line-name = "uart1_term";
> + };
> +
> + uart1half {
> + gpio-hog;
> + output-low;
> + gpios = <26 GPIO_ACTIVE_HIGH>;
> + line-name = "uart1_half";
> + };
> +
> + appgpio2 {
> + gpio-hog;
> + input;
> + gpios = <27 GPIO_ACTIVE_HIGH>;
> + line-name = "app_gpio2";
> + };
> +
> + mipigpio1 {
> + gpio-hog;
> + input;
> + gpios = <28 GPIO_ACTIVE_HIGH>;
> + line-name = "mipi_gpio1";
> + };
> +};
> +
> +&gpio5 {
> + mipigpio4 {
> + gpio-hog;
> + input;
> + gpios = <3 GPIO_ACTIVE_HIGH>;
> + line-name = "mipi_gpio4";
> + };
> +
> + mipigpio3 {
> + gpio-hog;
> + input;
> + gpios = <4 GPIO_ACTIVE_HIGH>;
> + line-name = "mipi_gpio3";
> + };
> +
> + mipigpio2 {
> + gpio-hog;
> + input;
> + gpios = <5 GPIO_ACTIVE_HIGH>;
> + line-name = "mipi_gpio2";
> + };
> +};
> +
> &fec1 {
> phy-reset-gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
> phy-reset-duration = <1>;
> diff --git a/arch/arm/dts/imx8mm-venice-gw7903-u-boot.dtsi
> b/arch/arm/dts/imx8mm-venice-gw7903-u-boot.dtsi
> index 36a605468b22..896e5d4edde3 100644
> --- a/arch/arm/dts/imx8mm-venice-gw7903-u-boot.dtsi
> +++ b/arch/arm/dts/imx8mm-venice-gw7903-u-boot.dtsi
> @@ -5,6 +5,89 @@
>
> #include "imx8mm-venice-u-boot.dtsi"
>
> +&gpio1 {
> + rs422en {
> + gpio-hog;
> + output-high;
> + gpios = <10 GPIO_ACTIVE_HIGH>;
> + line-name = "rs422_en#";
> + };
> +
> + rs485en {
> + gpio-hog;
> + output-high;
> + gpios = <11 GPIO_ACTIVE_HIGH>;
> + line-name = "rs485_en#";
> + };
> +
> + rs232en {
> + gpio-hog;
> + output-low;
> + gpios = <12 GPIO_ACTIVE_HIGH>;
> + line-name = "rs232_en#";
> + };
> +};
> +
> +&gpio2 {
> + dig2in {
> + gpio-hog;
> + input;
> + gpios = <0 GPIO_ACTIVE_HIGH>;
> + line-name = "dig2_in";
> + };
> +
> + dig2out {
> + gpio-hog;
> + output-high;
> + gpios = <1 GPIO_ACTIVE_HIGH>;
> + line-name = "dig2_out#";
> + };
> +
> + dig1out {
> + gpio-hog;
> + output-high;
> + gpios = <8 GPIO_ACTIVE_HIGH>;
> + line-name = "dig1_out#";
> + };
> +
> + dig1in {
> + gpio-hog;
> + input;
> + gpios = <9 GPIO_ACTIVE_HIGH>;
> + line-name = "dig1_in";
> + };
> +};
> +
> +&gpio5 {
> + sim1det {
> + gpio-hog;
> + input;
> + gpios = <7 GPIO_ACTIVE_LOW>;
> + line-name = "sim1_det#";
> + };
> +
> + sim2det {
> + gpio-hog;
> + input;
> + gpios = <8 GPIO_ACTIVE_LOW>;
> + line-name = "sim2_det#";
> + };
> +
> + sim2sel {
> + gpio-hog;
> + output-low;
> + gpios = <9 GPIO_ACTIVE_HIGH>;
> + line-name = "sim2_sel";
> + };
> +
> + pci_wdis {
> + gpio-hog;
> + output-high;
> + gpios = <12 GPIO_ACTIVE_HIGH>;
> + line-name = "pci_wdis#";
> + };
> +};
> +
> &fec1 {
> phy-reset-gpios = <&gpio4 25 GPIO_ACTIVE_LOW>;
> phy-reset-duration = <1>;
> diff --git a/arch/arm/dts/imx8mn-venice-gw7902-u-boot.dtsi
> b/arch/arm/dts/imx8mn-venice-gw7902-u-boot.dtsi
> index b334b56b82a1..9431e2a6cde7 100644
> --- a/arch/arm/dts/imx8mn-venice-gw7902-u-boot.dtsi
> +++ b/arch/arm/dts/imx8mn-venice-gw7902-u-boot.dtsi
> @@ -5,6 +5,114 @@
>
> #include "imx8mn-venice-u-boot.dtsi"
>
> +&gpio1 {
> + m2rst {
> + gpio-hog;
> + output-low;
> + gpios = <13 GPIO_ACTIVE_HIGH>;
> + line-name = "m2_reset";
> + };
> +
> + m2wdis {
> + gpio-hog;
> + output-high;
> + gpios = <15 GPIO_ACTIVE_HIGH>;
> + line-name = "m2_wdis#";
> + };
> +};
> +
> +&gpio2 {
> + uart2en {
> + gpio-hog;
> + output-high;
> + gpios = <8 GPIO_ACTIVE_HIGH>;
> + line-name = "uart2_en#";
> + };
> +};
> +
> +&gpio3 {
> + m2gdis {
> + gpio-hog;
> + output-high;
> + gpios = <1 GPIO_ACTIVE_HIGH>;
> + line-name = "m2_gdis#";
> + };
> +
> + m2off {
> + gpio-hog;
> + output-high;
> + gpios = <7 GPIO_ACTIVE_HIGH>;
> + line-name = "m2_off#";
> + };
> +};
> +
> +&gpio4 {
> + appgpio1 {
> + gpio-hog;
> + input;
> + gpios = <21 GPIO_ACTIVE_HIGH>;
> + line-name = "app_gpio1";
> + };
> +
> + uart1rs485 {
> + gpio-hog;
> + output-low;
> + gpios = <23 GPIO_ACTIVE_HIGH>;
> + line-name = "uart1_rs485";
> + };
> +
> + uart1term {
> + gpio-hog;
> + output-low;
> + gpios = <25 GPIO_ACTIVE_HIGH>;
> + line-name = "uart1_term";
> + };
> +
> + uart1half {
> + gpio-hog;
> + output-low;
> + gpios = <26 GPIO_ACTIVE_HIGH>;
> + line-name = "uart1_half";
> + };
> +
> + appgpio2 {
> + gpio-hog;
> + input;
> + gpios = <27 GPIO_ACTIVE_HIGH>;
> + line-name = "app_gpio2";
> + };
> +
> + mipigpio1 {
> + gpio-hog;
> + input;
> + gpios = <28 GPIO_ACTIVE_HIGH>;
> + line-name = "mipi_gpio1";
> + };
> +};
> +
> +&gpio5 {
> + mipigpio4 {
> + gpio-hog;
> + input;
> + gpios = <3 GPIO_ACTIVE_HIGH>;
> + line-name = "mipi_gpio4";
> + };
> +
> + mipigpio3 {
> + gpio-hog;
> + input;
> + gpios = <4 GPIO_ACTIVE_HIGH>;
> + line-name = "mipi_gpio3";
> + };
> +
> + mipigpio2 {
> + gpio-hog;
> + input;
> + gpios = <5 GPIO_ACTIVE_HIGH>;
> + line-name = "mipi_gpio2";
> + };
> +};
> +
> &fec1 {
> phy-reset-gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
> phy-reset-duration = <1>;
> diff --git a/configs/imx8mm_venice_defconfig
> b/configs/imx8mm_venice_defconfig index 78dc7acb3e60..03caef612790
> 100644
> --- a/configs/imx8mm_venice_defconfig
> +++ b/configs/imx8mm_venice_defconfig
> @@ -74,6 +74,7 @@ CONFIG_SPL_CLK_COMPOSITE_CCF=y
> CONFIG_CLK_COMPOSITE_CCF=y CONFIG_SPL_CLK_IMX8MM=y
> CONFIG_CLK_IMX8MM=y
> +CONFIG_GPIO_HOG=y
> CONFIG_MXC_GPIO=y
> CONFIG_DM_I2C=y
> CONFIG_LED=y
> diff --git a/configs/imx8mn_venice_defconfig
> b/configs/imx8mn_venice_defconfig index dbfda3706dbc..d0723c440708
> 100644
> --- a/configs/imx8mn_venice_defconfig
> +++ b/configs/imx8mn_venice_defconfig
> @@ -76,6 +76,7 @@ CONFIG_SPL_CLK_COMPOSITE_CCF=y
> CONFIG_CLK_COMPOSITE_CCF=y CONFIG_SPL_CLK_IMX8MN=y
> CONFIG_CLK_IMX8MN=y
> +CONFIG_GPIO_HOG=y
> CONFIG_MXC_GPIO=y
> CONFIG_DM_I2C=y
> CONFIG_LED=y
> --
> 2.17.1
