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clk: tegra: Implement reset control reset 

For completeness, also implement this reset framework API for Tegra.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Reviewed-by: Arto Merilainen <amerilainen@nvidia.com>
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Mikko Perttunen 2017-03-02 16:16:16 +02:00 committed by Thierry Reding
parent 9619dba832
commit 4236e752f1
1 changed files with 16 additions and 0 deletions
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16
drivers/clk/tegra/clk.c
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@ -17,6 +17,7 @@
#include <linux/clkdev.h> #include <linux/clkdev.h>
#include <linux/clk.h> #include <linux/clk.h>
#include <linux/clk-provider.h> #include <linux/clk-provider.h>
#include <linux/delay.h>
#include <linux/of.h> #include <linux/of.h>
#include <linux/clk/tegra.h> #include <linux/clk/tegra.h>
#include <linux/reset-controller.h> #include <linux/reset-controller.h>
@ -182,6 +183,20 @@ static int tegra_clk_rst_deassert(struct reset_controller_dev *rcdev,
return -EINVAL; return -EINVAL;
} }
static int tegra_clk_rst_reset(struct reset_controller_dev *rcdev,
unsigned long id)
{
int err;
err = tegra_clk_rst_assert(rcdev, id);
if (err)
return err;
udelay(1);
return tegra_clk_rst_deassert(rcdev, id);
}
const struct tegra_clk_periph_regs *get_reg_bank(int clkid) const struct tegra_clk_periph_regs *get_reg_bank(int clkid)
{ {
int reg_bank = clkid / 32; int reg_bank = clkid / 32;
@ -274,6 +289,7 @@ void __init tegra_init_from_table(struct tegra_clk_init_table *tbl,
static const struct reset_control_ops rst_ops = { static const struct reset_control_ops rst_ops = {
.assert = tegra_clk_rst_assert, .assert = tegra_clk_rst_assert,
.deassert = tegra_clk_rst_deassert, .deassert = tegra_clk_rst_deassert,
.reset = tegra_clk_rst_reset,
}; };
static struct reset_controller_dev rst_ctlr = { static struct reset_controller_dev rst_ctlr = {