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authorArnd Bergmann <arnd@arndb.de>2014-11-28 15:01:57 +0100
committerArnd Bergmann <arnd@arndb.de>2014-11-28 15:01:57 +0100
commit6b7f0570b1f0a7f65d90d6b5d4ddf84c2a13e91b (patch)
treef685bc0bda07a9036f76c4e9c342eacb6354fe8a /drivers/power/reset
parentea4409cc44e8f0f36182fcc22eb48b15ed61dd16 (diff)
parent96acf9dfe1ba59e99eafcf26478118edd195d924 (diff)
Merge tag 'imx-dt-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/dt
Pull "The i.MX device tree changes for 3.19" from Shawn Guo: - Device additions for board vf610-colibri, pwm, backlight, I2C, RTC, ADC etc. - Update i.MX6 phyFLEX board to include PCIe, CAN and audio support - Improve SSI clocks description for i.MX5 platforms - Add ENET2 support for imx6sx-sdb board - Add device tree source for LS1021A SoC, board QDS and TWR - Enable cpufreq support for i.MX53 - Enable VPU device support for i.MX6QDL - Enable poweroff support for i.MX6 SoCs - Add support for TBS2910 Matrix ARM mini PC which is built on i.MX6Q - Create generic base device trees for Vybrid and add support for Colibri VF50 Note: the change set is built on top of imx-soc-3.19 to resolve the dependency that "ARM: dts: imx53: add cpufreq-dt support" uses the clock define IMX5_CLK_ARM that is added by "ARM: imx53: clk: add ARM clock". * tag 'imx-dt-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: (51 commits) ARM: dts: imx6q-tbs2910: Enable snvs-poweroff ARM: dts: imx6: add pm_power_off support for i.mx6 chips ARM: dts: vf-colibri: add USB regulators ARM: dts: imx6: phyFLEX: Add CAN support ARM: dts: imx6: phyFLEX: Add PCIe ARM: dts: imx6: phyFLEX: Set correct interrupt for pmic ARM: dts: imx6: phyFLEX: Enable gpmi in module file ARM: dts: imx6: phyFLEX: set nodes in alphabetical order ARM: dts: vf-colibri-eval-v3.dts: Enable ST-M41T0M6 RTC ARM: dts: vf-colibri: Add I2C support ARM: dts: imx6qdl: Enable CODA960 VPU ARM: dts: imx6q-tbs2910: Remove unneeded 'fsl,mode' property ARM: dts: vf610: enable USB misc/phy nodes where necessary ARM: dts: vf610: use new GPIO support ARM: dts: pbab01: enable I2S audio on phyFLEX-i.MX6 boards ARM: dts: pbab01: move i2c pins and frequency configuration into pfla02 ARM: dts: vf500-colibri: add Colibri VF50 support ARM: dts: vf610: create generic base device trees ARM: dts: vf610: assign oscillator to clock module dt-bindings: arm: add Freescale LS1021A SoC device tree binding ... Signed-off-by; Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/power/reset')
-rw-r--r--drivers/power/reset/Kconfig9
-rw-r--r--drivers/power/reset/Makefile1
-rw-r--r--drivers/power/reset/imx-snvs-poweroff.c66
3 files changed, 76 insertions, 0 deletions
diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig
index f65ff49bb275..028e76504519 100644
--- a/drivers/power/reset/Kconfig
+++ b/drivers/power/reset/Kconfig
@@ -71,6 +71,15 @@ config POWER_RESET_HISI
help
Reboot support for Hisilicon boards.
+config POWER_RESET_IMX
+ bool "IMX6 power-off driver"
+ depends on POWER_RESET && SOC_IMX6
+ help
+ This driver support power off external PMIC by PMIC_ON_REQ on i.mx6
+ boards.If you want to use other pin to control external power,please
+ say N here or disable in dts to make sure pm_power_off never be
+ overwrote wrongly by this driver.
+
config POWER_RESET_MSM
bool "Qualcomm MSM power-off driver"
depends on ARCH_QCOM
diff --git a/drivers/power/reset/Makefile b/drivers/power/reset/Makefile
index 76ce1c59469b..1d4804d6b323 100644
--- a/drivers/power/reset/Makefile
+++ b/drivers/power/reset/Makefile
@@ -6,6 +6,7 @@ obj-$(CONFIG_POWER_RESET_BRCMSTB) += brcmstb-reboot.o
obj-$(CONFIG_POWER_RESET_GPIO) += gpio-poweroff.o
obj-$(CONFIG_POWER_RESET_GPIO_RESTART) += gpio-restart.o
obj-$(CONFIG_POWER_RESET_HISI) += hisi-reboot.o
+obj-$(CONFIG_POWER_RESET_IMX) += imx-snvs-poweroff.o
obj-$(CONFIG_POWER_RESET_MSM) += msm-poweroff.o
obj-$(CONFIG_POWER_RESET_LTC2952) += ltc2952-poweroff.o
obj-$(CONFIG_POWER_RESET_QNAP) += qnap-poweroff.o
diff --git a/drivers/power/reset/imx-snvs-poweroff.c b/drivers/power/reset/imx-snvs-poweroff.c
new file mode 100644
index 000000000000..ad6ce5020ea7
--- /dev/null
+++ b/drivers/power/reset/imx-snvs-poweroff.c
@@ -0,0 +1,66 @@
+/* Power off driver for i.mx6
+ * Copyright (c) 2014, FREESCALE CORPORATION. All rights reserved.
+ *
+ * based on msm-poweroff.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+
+static void __iomem *snvs_base;
+
+static void do_imx_poweroff(void)
+{
+ u32 value = readl(snvs_base);
+
+ /* set TOP and DP_EN bit */
+ writel(value | 0x60, snvs_base);
+}
+
+static int imx_poweroff_probe(struct platform_device *pdev)
+{
+ snvs_base = of_iomap(pdev->dev.of_node, 0);
+ if (!snvs_base) {
+ dev_err(&pdev->dev, "failed to get memory\n");
+ return -ENODEV;
+ }
+
+ pm_power_off = do_imx_poweroff;
+ return 0;
+}
+
+static const struct of_device_id of_imx_poweroff_match[] = {
+ { .compatible = "fsl,sec-v4.0-poweroff", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, of_imx_poweroff_match);
+
+static struct platform_driver imx_poweroff_driver = {
+ .probe = imx_poweroff_probe,
+ .driver = {
+ .name = "imx-snvs-poweroff",
+ .of_match_table = of_match_ptr(of_imx_poweroff_match),
+ },
+};
+
+static int __init imx_poweroff_init(void)
+{
+ return platform_driver_register(&imx_poweroff_driver);
+}
+device_initcall(imx_poweroff_init);