| Message ID | 20240405160720.5977-4-eichest@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | arm64: dts: freescale: verdin-imx8mm/imx8mp: add sleep-moci support | expand |
On Fri, Apr 05, 2024 at 06:07:19PM +0200, Stefan Eichenberger wrote: > From: Stefan Eichenberger <stefan.eichenberger@toradex.com> > > The Verdin family has a signal called sleep-moci which can be used to > turn off peripherals on the carrier board when the SoM goes into > suspend. So far we have hogged this signal, which means the peripherals > are always on and it is not possible to add peripherals that depend on > the sleep-moci to be on. With this change, we replace the hog with a > regulator so that peripherals can add their own regulators that use the > same gpio. Carrier boards that allow peripherals to be powered off in > suspend can disable this regulator and implement their own regulator to > control the sleep-moci. > > Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com> Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi index 1cff0b829357..b64dac4f29c2 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi @@ -58,6 +58,11 @@ &flexspi { status = "okay"; }; +&gpio5 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_ctrl_sleep_moci>; +}; + /* Current measurement into module VCC */ &hwmon { status = "okay"; diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi index 3c4b8ca125e3..95b7c9a03a23 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi @@ -78,6 +78,11 @@ &i2c3 { status = "okay"; }; +&gpio5 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_ctrl_sleep_moci>; +}; + &gpio_expander_21 { status = "okay"; }; diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin-yavia.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin-yavia.dtsi index 1e28c78e381f..763f069e8405 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-verdin-yavia.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin-yavia.dtsi @@ -81,6 +81,11 @@ &gpio3 { pinctrl-0 = <&pinctrl_gpios_ext_yavia>; }; +&gpio5 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_ctrl_sleep_moci>; +}; + &hwmon_temp { status = "okay"; }; diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi index 6f0811587142..4768b05fd765 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi @@ -110,6 +110,22 @@ reg_ethphy: regulator-ethphy { startup-delay-us = <200000>; }; + /* + * By default we enable CTRL_SLEEP_MOCI#, this is required to have + * peripherals on the carrier board powered. + * If more granularity or power saving is required this can be disabled + * in the carrier board device tree files. + */ + reg_force_sleep_moci: regulator-force-sleep-moci { + compatible = "regulator-fixed"; + enable-active-high; + /* Verdin CTRL_SLEEP_MOCI# (SODIMM 256) */ + gpio = <&gpio5 1 GPIO_ACTIVE_HIGH>; + regulator-always-on; + regulator-boot-on; + regulator-name = "CTRL_SLEEP_MOCI#"; + }; + reg_usb_otg1_vbus: regulator-usb-otg1 { compatible = "regulator-fixed"; enable-active-high; @@ -333,16 +349,6 @@ &gpio5 { "SODIMM_212", "SODIMM_151", "SODIMM_153"; - - ctrl-sleep-moci-hog { - gpio-hog; - /* Verdin CTRL_SLEEP_MOCI# (SODIMM 256) */ - gpios = <1 GPIO_ACTIVE_HIGH>; - line-name = "CTRL_SLEEP_MOCI#"; - output-high; - pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_ctrl_sleep_moci>; - }; }; /* On-module I2C */