diff options
| author | Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> | 2019-10-23 22:23:12 +0200 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2019-11-20 22:32:00 +0100 |
| commit | caaaf62ac89fc9b794d75cbb8c198b1684e736e1 (patch) | |
| tree | 9361d9d0609dd2f9402ea1aae7638b2964f04348 /drivers/timer | |
| parent | 26fb85f4ab73cd57099d9058531f25b9cdf1c9a1 (diff) | |
timer: dw-apb: add reset handling
To use this DM timer on socfpga as system tick, it needs to take itself
out of reset.
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Diffstat (limited to 'drivers/timer')
| -rw-r--r-- | drivers/timer/dw-apb-timer.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/timer/dw-apb-timer.c b/drivers/timer/dw-apb-timer.c index 86312b8dc7..fad22be8c9 100644 --- a/drivers/timer/dw-apb-timer.c +++ b/drivers/timer/dw-apb-timer.c @@ -8,6 +8,7 @@ #include <common.h> #include <dm.h> #include <clk.h> +#include <reset.h> #include <timer.h> #include <asm/io.h> @@ -18,7 +19,8 @@ #define DW_APB_CTRL 0x8 struct dw_apb_timer_priv { - fdt_addr_t regs; + fdt_addr_t regs; + struct reset_ctl_bulk resets; }; static int dw_apb_timer_get_count(struct udevice *dev, u64 *count) @@ -42,6 +44,12 @@ static int dw_apb_timer_probe(struct udevice *dev) struct clk clk; int ret; + ret = reset_get_bulk(dev, &priv->resets); + if (ret) + dev_warn(dev, "Can't get reset: %d\n", ret); + else + reset_deassert_bulk(&priv->resets); + ret = clk_get_by_index(dev, 0, &clk); if (ret) return ret; @@ -67,6 +75,13 @@ static int dw_apb_timer_ofdata_to_platdata(struct udevice *dev) return 0; } +static int dw_apb_timer_remove(struct udevice *dev) +{ + struct dw_apb_timer_priv *priv = dev_get_priv(dev); + + return reset_release_bulk(&priv->resets); +} + static const struct timer_ops dw_apb_timer_ops = { .get_count = dw_apb_timer_get_count, }; @@ -83,5 +98,6 @@ U_BOOT_DRIVER(dw_apb_timer) = { .probe = dw_apb_timer_probe, .of_match = dw_apb_timer_ids, .ofdata_to_platdata = dw_apb_timer_ofdata_to_platdata, + .remove = dw_apb_timer_remove, .priv_auto_alloc_size = sizeof(struct dw_apb_timer_priv), }; |