diff options
Diffstat (limited to 'recipes-kernel/linux/linux-toradex-upstream-6.6/0003-arm64-dts-freescale-imx8mm-verdin-replace-sleep-m.patch')
| -rw-r--r-- | recipes-kernel/linux/linux-toradex-upstream-6.6/0003-arm64-dts-freescale-imx8mm-verdin-replace-sleep-m.patch | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/recipes-kernel/linux/linux-toradex-upstream-6.6/0003-arm64-dts-freescale-imx8mm-verdin-replace-sleep-m.patch b/recipes-kernel/linux/linux-toradex-upstream-6.6/0003-arm64-dts-freescale-imx8mm-verdin-replace-sleep-m.patch new file mode 100644 index 0000000..2fdde24 --- /dev/null +++ b/recipes-kernel/linux/linux-toradex-upstream-6.6/0003-arm64-dts-freescale-imx8mm-verdin-replace-sleep-m.patch @@ -0,0 +1,120 @@ +From dbe145ebf4edaec4bcd9cc632defe58dad030626 Mon Sep 17 00:00:00 2001 +From: Stefan Eichenberger <stefan.eichenberger@toradex.com> +Date: Fri, 26 Jan 2024 13:37:52 +0100 +Subject: [PATCH v1 3/4] arm64: dts: freescale: imx8mm-verdin: replace + sleep-moci hog with regulator + +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. + +Upstream-Status: Submitted [https://lore.kernel.org/linux-devicetree/20240405160720.5977-1-eichest@gmail.com/] +Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com> +--- + .../dts/freescale/imx8mm-verdin-dahlia.dtsi | 5 ++++ + .../boot/dts/freescale/imx8mm-verdin-dev.dtsi | 5 ++++ + .../dts/freescale/imx8mm-verdin-yavia.dtsi | 5 ++++ + .../boot/dts/freescale/imx8mm-verdin.dtsi | 26 ++++++++++++------- + 4 files changed, 31 insertions(+), 10 deletions(-) + +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 */ +-- +2.40.1 + |