diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.1/0087-gpio-poweroff-Allow-it-to-work-on-Raspberry-Pi.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.1/0087-gpio-poweroff-Allow-it-to-work-on-Raspberry-Pi.patch | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/target/linux/brcm2708/patches-4.1/0087-gpio-poweroff-Allow-it-to-work-on-Raspberry-Pi.patch b/target/linux/brcm2708/patches-4.1/0087-gpio-poweroff-Allow-it-to-work-on-Raspberry-Pi.patch deleted file mode 100644 index e7c733fa53..0000000000 --- a/target/linux/brcm2708/patches-4.1/0087-gpio-poweroff-Allow-it-to-work-on-Raspberry-Pi.patch +++ /dev/null @@ -1,108 +0,0 @@ -From d600a3f1ffc633465794c3519f2eb4aa536a9dde Mon Sep 17 00:00:00 2001 -From: Phil Elwell <phil@raspberrypi.org> -Date: Thu, 25 Jun 2015 12:16:11 +0100 -Subject: [PATCH 087/222] gpio-poweroff: Allow it to work on Raspberry Pi - -The Raspberry Pi firmware manages the power-down and reboot -process. To do this it installs a pm_power_off handler, causing -the gpio-poweroff module to abort the probe function. - -This patch introduces a "force" DT property that overrides that -behaviour, and also adds a DT overlay to enable and control it. - -Note that running in an active-low configuration (DT parameter -"active_low") requires a custom dt-blob.bin and probably won't -allow a reboot without switching off, so an external inversion -of the trigger signal may be preferable. ---- - arch/arm/boot/dts/overlays/Makefile | 1 + - arch/arm/boot/dts/overlays/README | 13 +++++++++ - .../boot/dts/overlays/gpio-poweroff-overlay.dts | 34 ++++++++++++++++++++++ - drivers/power/reset/gpio-poweroff.c | 4 ++- - 4 files changed, 51 insertions(+), 1 deletion(-) - create mode 100644 arch/arm/boot/dts/overlays/gpio-poweroff-overlay.dts - ---- a/arch/arm/boot/dts/overlays/Makefile -+++ b/arch/arm/boot/dts/overlays/Makefile -@@ -16,6 +16,7 @@ dtb-$(RPI_DT_OVERLAYS) += ads7846-overla - dtb-$(RPI_DT_OVERLAYS) += bmp085_i2c-sensor-overlay.dtb - dtb-$(RPI_DT_OVERLAYS) += dht11-overlay.dtb - dtb-$(RPI_DT_OVERLAYS) += enc28j60-overlay.dtb -+dtb-$(RPI_DT_OVERLAYS) += gpio-poweroff-overlay.dtb - dtb-$(RPI_DT_OVERLAYS) += hifiberry-amp-overlay.dtb - dtb-$(RPI_DT_OVERLAYS) += hifiberry-dac-overlay.dtb - dtb-$(RPI_DT_OVERLAYS) += hifiberry-dacplus-overlay.dtb ---- a/arch/arm/boot/dts/overlays/README -+++ b/arch/arm/boot/dts/overlays/README -@@ -192,6 +192,19 @@ Params: int_pin GPIO us - speed SPI bus speed (default 12000000) - - -+Name: gpio-poweroff -+Info: Drives a GPIO high or low on reboot -+Load: gpio-poweroff,<param>=<val> -+Params: gpiopin GPIO for signalling (default 26) -+ -+ active_low Set if the power control device requires a -+ high->low transition to trigger a power-down. -+ Note that this will require the support of a -+ custom dt-blob.bin to prevent a power-down -+ during the boot process, and that a reboot -+ will also cause the pin to go low. -+ -+ - Name: hifiberry-amp - Info: Configures the HifiBerry Amp and Amp+ audio cards - Load: dtoverlay=hifiberry-amp ---- /dev/null -+++ b/arch/arm/boot/dts/overlays/gpio-poweroff-overlay.dts -@@ -0,0 +1,34 @@ -+// Definitions for gpio-poweroff module -+/dts-v1/; -+/plugin/; -+ -+/ { -+ compatible = "brcm,bcm2708"; -+ -+ fragment@0 { -+ target-path = "/"; -+ __overlay__ { -+ power_ctrl: power_ctrl { -+ compatible = "gpio-poweroff"; -+ gpios = <&gpio 26 0>; -+ force; -+ }; -+ }; -+ }; -+ -+ fragment@1 { -+ target = <&gpio>; -+ __overlay__ { -+ power_ctrl_pins: power_ctrl_pins { -+ brcm,pins = <26>; -+ brcm,function = <1>; // out -+ }; -+ }; -+ }; -+ -+ __overrides__ { -+ gpiopin = <&power_ctrl>,"gpios:4", -+ <&power_ctrl_pins>,"brcm,pins:0"; -+ active_low = <&power_ctrl>,"gpios:8"; -+ }; -+}; ---- a/drivers/power/reset/gpio-poweroff.c -+++ b/drivers/power/reset/gpio-poweroff.c -@@ -48,9 +48,11 @@ static void gpio_poweroff_do_poweroff(vo - static int gpio_poweroff_probe(struct platform_device *pdev) - { - bool input = false; -+ bool force = false; - - /* If a pm_power_off function has already been added, leave it alone */ -- if (pm_power_off != NULL) { -+ force = of_property_read_bool(pdev->dev.of_node, "force"); -+ if (!force && (pm_power_off != NULL)) { - dev_err(&pdev->dev, - "%s: pm_power_off function already registered", - __func__); |