@@ -38,6 +38,13 @@ config POWER_RESET_AXXIA
Say Y if you have an Axxia family SoC.
+config POWER_RESET_BCM63XX
+ bool "Broadcom BCM63xx reset driver"
+ depends on ARM || MIPS || COMPILE_TEST
+ default ARCH_BCM_63XX
+ help
+ This driver provides restart support for the Broadcom DSL SoCs.
+
config POWER_RESET_BRCMSTB
bool "Broadcom STB reset driver"
depends on ARM || MIPS || COMPILE_TEST
@@ -2,6 +2,7 @@ obj-$(CONFIG_POWER_RESET_AS3722) += as3722-poweroff.o
obj-$(CONFIG_POWER_RESET_AT91_POWEROFF) += at91-poweroff.o
obj-$(CONFIG_POWER_RESET_AT91_RESET) += at91-reset.o
obj-$(CONFIG_POWER_RESET_AXXIA) += axxia-reset.o
+obj-$(CONFIG_POWER_RESET_BCM63XX) += bcm63xx-reboot.o
obj-$(CONFIG_POWER_RESET_BRCMSTB) += brcmstb-reboot.o
obj-$(CONFIG_POWER_RESET_GPIO) += gpio-poweroff.o
obj-$(CONFIG_POWER_RESET_GPIO_RESTART) += gpio-restart.o
new file mode 100644
@@ -0,0 +1,80 @@
+/*
+ * Broadcom BCM63xx DSL SoCs reboot handler
+ *
+ * Copyright (C) 2015, Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/reboot.h>
+#include <linux/of.h>
+
+static void __iomem *rst_base;
+
+#define SOFT_RESET BIT(0)
+
+static int bcm63xx_restart_handler(struct notifier_block *this,
+ unsigned long mdoe, void *cmd)
+{
+ u32 reg;
+
+ reg = __raw_readl(rst_base);
+ reg |= SOFT_RESET;
+ __raw_writel(reg, rst_base);
+
+ while (1)
+ ;
+
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block bcm63xx_restart_nb = {
+ .notifier_call = bcm63xx_restart_handler,
+ .priority = 128,
+};
+
+#ifdef CONFIG_OF
+static const struct of_device_id bcm63xx_reboot_of_match[] = {
+ { .compatible = "brcm,bcm6328-soft-reset", },
+ { /* sentinel */ },
+};
+#endif
+
+static int bcm63xx_reboot_probe(struct platform_device *pdev)
+{
+ struct resource *r;
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ rst_base = devm_ioremap_resource(&pdev->dev, r);
+ if (IS_ERR(rst_base)) {
+ dev_err(&pdev->dev, "failed to remap registers\n");
+ return PTR_ERR(rst_base);
+ }
+
+ return register_restart_handler(&bcm63xx_restart_nb);
+}
+
+static struct platform_driver bcm63xx_reboot_driver = {
+ .probe = bcm63xx_reboot_probe,
+ .driver = {
+ .name = "bcm63xx-soft-reset",
+ .of_match_table = of_match_ptr(bcm63xx_reboot_of_match),
+ },
+};
+
+static int __init bcm63xx_reboot_init(void)
+{
+ return platform_driver_probe(&bcm63xx_reboot_driver,
+ bcm63xx_reboot_probe);
+}
+subsys_initcall(bcm63xx_reboot_init);
Add a sofware reset driver for the Broadcom BCM63xx DSL SoCs, starting with 6328 all the way through newer chips such as 63138. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> --- drivers/power/reset/Kconfig | 7 ++++ drivers/power/reset/Makefile | 1 + drivers/power/reset/bcm63xx-reboot.c | 80 ++++++++++++++++++++++++++++++++++++ 3 files changed, 88 insertions(+) create mode 100644 drivers/power/reset/bcm63xx-reboot.c