[U-Boot] [PATCH] watchdog: bcm2835_wdt: Remove unused BCM283x watchdog driver and its references

[Stefan Roese]

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 at denx.de>
Cc: Paolo Pisati <p.pisati at gmail.com>
---
 arch/arm/mach-bcm283x/reset.c  |  4 ----
 drivers/watchdog/Kconfig       |  9 ---------
 drivers/watchdog/Makefile      |  1 -
 drivers/watchdog/bcm2835_wdt.c | 34 ----------------------------------
 4 files changed, 48 deletions(-)
 delete mode 100644 drivers/watchdog/bcm2835_wdt.c

diff --git a/arch/arm/mach-bcm283x/reset.c b/arch/arm/mach-bcm283x/reset.c
index 7712d4664c..b3da0c7cd6 100644
--- a/arch/arm/mach-bcm283x/reset.c
+++ b/arch/arm/mach-bcm283x/reset.c
@@ -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;
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index e2a6a27b2a..ae539d309d 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -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 OMAP_WATCHDOG
 	bool "TI OMAP watchdog driver"
 	depends on ARCH_OMAP2PLUS
diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
index 3e3b60b00d..48fe3c64a9 100644
--- a/drivers/watchdog/Makefile
+++ b/drivers/watchdog/Makefile
@@ -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
diff --git a/drivers/watchdog/bcm2835_wdt.c b/drivers/watchdog/bcm2835_wdt.c
deleted file mode 100644
index 6cffcb15e0..0000000000
--- a/drivers/watchdog/bcm2835_wdt.c
+++ /dev/null
@@ -1,34 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Watchdog driver for Broadcom BCM2835
- *
- * Copyright (C) 2017 Paolo Pisati <p.pisati at 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;
-}
-- 
2.21.0