diff options
author | Heiko Stübner <heiko@sntech.de> | 2014-08-19 17:45:37 -0700 |
---|---|---|
committer | Heiko Stuebner <heiko@sntech.de> | 2014-10-01 14:14:46 +0200 |
commit | e317c19470f6d690122519bf9ed1c9f21ea11906 (patch) | |
tree | f34377071df2a93aa92f0c714a790e1d52752c11 /drivers/clk/samsung/clk-s3c2443.c | |
parent | 6f1294b5a87238c2f87f74a9942faf2f4ffa63b2 (diff) |
clk: samsung: register restart handlers for s3c2412 and s3c2443
S3C2412, S3C2443 and their derivatives contain a special software-reset
register in their system-controller.
Therefore register a restart handler for those.
Tested on a s3c2416-based board, s3c2412 compile-tested.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/clk/samsung/clk-s3c2443.c')
-rw-r--r-- | drivers/clk/samsung/clk-s3c2443.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/clk/samsung/clk-s3c2443.c b/drivers/clk/samsung/clk-s3c2443.c index c92f853fca9f..0c3c182b902a 100644 --- a/drivers/clk/samsung/clk-s3c2443.c +++ b/drivers/clk/samsung/clk-s3c2443.c @@ -14,6 +14,7 @@ #include <linux/of.h> #include <linux/of_address.h> #include <linux/syscore_ops.h> +#include <linux/reboot.h> #include <dt-bindings/clock/s3c2443.h> @@ -33,6 +34,7 @@ #define HCLKCON 0x30 #define PCLKCON 0x34 #define SCLKCON 0x38 +#define SWRST 0x44 /* the soc types */ enum supported_socs { @@ -354,6 +356,18 @@ struct samsung_clock_alias s3c2450_aliases[] __initdata = { ALIAS(PCLK_I2C1, "s3c2410-i2c.1", "i2c"), }; +static int s3c2443_restart(struct notifier_block *this, + unsigned long mode, void *cmd) +{ + __raw_writel(0x533c2443, reg_base + SWRST); + return NOTIFY_DONE; +} + +static struct notifier_block s3c2443_restart_handler = { + .notifier_call = s3c2443_restart, + .priority = 129, +}; + /* * fixed rate clocks generated outside the soc * Only necessary until the devicetree-move is complete @@ -378,6 +392,7 @@ void __init s3c2443_common_clk_init(struct device_node *np, unsigned long xti_f, void __iomem *base) { struct samsung_clk_provider *ctx; + int ret; reg_base = base; if (np) { @@ -447,6 +462,10 @@ void __init s3c2443_common_clk_init(struct device_node *np, unsigned long xti_f, s3c2443_clk_sleep_init(); samsung_clk_of_add_provider(np, ctx); + + ret = register_restart_handler(&s3c2443_restart_handler); + if (ret) + pr_warn("cannot register restart handler, %d\n", ret); } static void __init s3c2416_clk_init(struct device_node *np) |