diff options
| author | Philipp Tomsich <philipp.tomsich@theobroma-systems.com> | 2018-02-16 16:07:25 +0100 |
|---|---|---|
| committer | Philipp Tomsich <philipp.tomsich@theobroma-systems.com> | 2018-02-24 18:46:45 +0100 |
| commit | 35a69a3b01298e605025f4758d79f667463c9ee1 (patch) | |
| tree | ebe5de60a009374f599df9f595331bbdf995ded1 /drivers/clk | |
| parent | a9bdd67653c026d3f568375ca8e48fb5014c62c9 (diff) | |
rockchip: clk: rk3368: handle clk_enable requests for GMAC
Since commit ba1f96672522 ("net: designware: add clock support"), the
designware GMAC driver enables all referenced clocks. While this is a
no-op for the RK3368 during boot-up (reset behaviour has all the clock
gates open anyway), we still need to handle the clock-ids passed in
the enable op of the clock-driver and return a success.
This change extends the RK3368 clk driver to:
(a) provide a enable op
(b) signals success to the caller when the clocks for the GMAC are
enabled (no actual action is necessary as the gates are open
after reset)
References: commit ba1f96672522 ("net: designware: add clock support")
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Tested-by: Klaus Goger <klaus.goger@theobroma-systems.com>
Diffstat (limited to 'drivers/clk')
| -rw-r--r-- | drivers/clk/rockchip/clk_rk3368.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/clk/rockchip/clk_rk3368.c b/drivers/clk/rockchip/clk_rk3368.c index 3ac9add527b..ea00f1fc9cc 100644 --- a/drivers/clk/rockchip/clk_rk3368.c +++ b/drivers/clk/rockchip/clk_rk3368.c @@ -568,12 +568,31 @@ static int __maybe_unused rk3368_clk_set_parent(struct clk *clk, struct clk *par return -ENOENT; } +static int rk3368_clk_enable(struct clk *clk) +{ + switch (clk->id) { + case SCLK_MAC: + case SCLK_MAC_RX: + case SCLK_MAC_TX: + case SCLK_MACREF: + case SCLK_MACREF_OUT: + case ACLK_GMAC: + case PCLK_GMAC: + /* Required to successfully probe the Designware GMAC driver */ + return 0; + } + + debug("%s: unsupported clk %ld\n", __func__, clk->id); + return -ENOENT; +} + static struct clk_ops rk3368_clk_ops = { .get_rate = rk3368_clk_get_rate, .set_rate = rk3368_clk_set_rate, #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) .set_parent = rk3368_clk_set_parent, #endif + .enable = rk3368_clk_enable, }; static int rk3368_clk_probe(struct udevice *dev) |