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watchdog: bcm2835_wdt: Remove unused BCM283x watchdog driver and its references

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The BCM2835/2836 watchdog is not used in mainline U-Boot at all. This
patch removes the driver and its references (CONFIG_BCM2835_WDT)
completely.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Paolo Pisati <p.pisati@gmail.com>
This commit is contained in:
Stefan Roese
2019-05-10 14:26:57 +02:00
parent 898c40c0d6
commit c7adc0b5f9
4 changed files with 0 additions and 48 deletions
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4
arch/arm/mach-bcm283x/reset.c
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@@ -23,11 +23,7 @@
/* max ticks timeout */
#define BCM2835_WDOG_MAX_TIMEOUT 0x000fffff
#ifdef CONFIG_BCM2835_WDT
extern void hw_watchdog_disable(void);
#else
void hw_watchdog_disable(void) {}
#endif
__efi_runtime_data struct bcm2835_wdog_regs *wdog_regs =
(struct bcm2835_wdog_regs *)BCM2835_WDOG_PHYSADDR;

9
drivers/watchdog/Kconfig
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@@ -17,15 +17,6 @@ config WATCHDOG_RESET_DISABLE
Disable reset watchdog, which can let WATCHDOG_RESET invalid, so
that the watchdog will not be fed in u-boot.
config BCM2835_WDT
bool "Enable BCM2835/2836 watchdog driver"
select HW_WATCHDOG
help
Say Y here to enable the BCM2835/2836 watchdog
This provides basic infrastructure to support BCM2835/2836 watchdog
hardware, with a max timeout of ~15secs.
config IMX_WATCHDOG
bool "Enable Watchdog Timer support for IMX and LSCH2 of NXP"
select HW_WATCHDOG if !WDT

1
drivers/watchdog/Makefile
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@@ -20,7 +20,6 @@ obj-$(CONFIG_WDT_SANDBOX) += sandbox_wdt.o
obj-$(CONFIG_WDT_ARMADA_37XX) += armada-37xx-wdt.o
obj-$(CONFIG_WDT_ASPEED) += ast_wdt.o
obj-$(CONFIG_WDT_BCM6345) += bcm6345_wdt.o
obj-$(CONFIG_BCM2835_WDT) += bcm2835_wdt.o
obj-$(CONFIG_WDT_ORION) += orion_wdt.o
obj-$(CONFIG_WDT_CDNS) += cdns_wdt.o
obj-$(CONFIG_WDT_MPC8xx) += mpc8xx_wdt.o

34
drivers/watchdog/bcm2835_wdt.c
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@@ -1,34 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Watchdog driver for Broadcom BCM2835
*
* Copyright (C) 2017 Paolo Pisati <p.pisati@gmail.com>
*/
#include <common.h>
#include <efi_loader.h>
#include <asm/io.h>
#include <asm/arch/wdog.h>
#define SECS_TO_WDOG_TICKS(x) ((x) << 16)
#define MAX_TIMEOUT 0xf /* ~15s */
static __efi_runtime_data bool enabled = true;
extern void reset_cpu(ulong ticks);
void hw_watchdog_reset(void)
{
if (enabled)
reset_cpu(SECS_TO_WDOG_TICKS(MAX_TIMEOUT));
}
void hw_watchdog_init(void)
{
hw_watchdog_reset();
}
void __efi_runtime hw_watchdog_disable(void)
{
enabled = false;
}