From 28b11a8b1258214b3b5d58bb6e3bbcb0fc9fd4fe Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Thu, 31 Jul 2014 07:28:05 +0200 Subject: [PATCH] ARM: BCM5301X: add restart support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Rafał Miłecki --- arch/arm/mach-bcm/bcm_5301x.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) --- a/arch/arm/mach-bcm/bcm_5301x.c +++ b/arch/arm/mach-bcm/bcm_5301x.c @@ -12,9 +12,26 @@ #include #include +#include static bool first_fault = true; +static struct bcma_bus *bcm5301x_get_bcma_bus(void) +{ + struct device_node *np; + struct platform_device *pdev; + + np = of_find_compatible_node(NULL, NULL, "brcm,bus-axi"); + if (!np) + return NULL; + + pdev = of_find_device_by_node(np); + if (!pdev) + return NULL; + + return platform_get_drvdata(pdev); +} + static int bcm5301x_abort_handler(unsigned long addr, unsigned int fsr, struct pt_regs *regs) { @@ -49,6 +66,19 @@ static void __init bcm5301x_dt_init(void of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); } +static void bcm5301x_restart(enum reboot_mode mode, const char *cmd) +{ + struct bcma_bus *bus = bcm5301x_get_bcma_bus(); + + if (bus) + bcma_chipco_watchdog_timer_set(&bus->drv_cc, 1); + else + pr_warn("Unable to access bcma bus\n"); + + while (1) + ; +} + static const char __initconst *bcm5301x_dt_compat[] = { "brcm,bcm4708", NULL, @@ -57,5 +87,6 @@ static const char __initconst *bcm5301x_ DT_MACHINE_START(BCM5301X, "BCM5301X") .init_early = bcm5301x_init_early, .init_machine = bcm5301x_dt_init, + .restart = bcm5301x_restart, .dt_compat = bcm5301x_dt_compat, MACHINE_END