Messages in this thread Patch in this message |  | | From | Dario Binacchi <> | Subject | [RFC PATCH v2 02/11] clk: imx: add clk_hw based API imx_get_clk_hw_from_dt() | Date | Sun, 1 Jan 2023 18:57:31 +0100 |
| |
Clock providers are recommended to use the struct clk_hw based API, so add an IMX provider helper to get clk_hw from device tree node name.
This is a preparation patch for the upcoming support to setup clocks directly from the device tree.
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> ---
(no changes since v1)
drivers/clk/imx/clk.c | 21 +++++++++++++++++++++ drivers/clk/imx/clk.h | 3 +++ 2 files changed, 24 insertions(+)
diff --git a/drivers/clk/imx/clk.c b/drivers/clk/imx/clk.c index b636cc099d96..6ae122ccd83e 100644 --- a/drivers/clk/imx/clk.c +++ b/drivers/clk/imx/clk.c @@ -68,6 +68,27 @@ void imx_check_clk_hws(struct clk_hw *clks[], unsigned int count) } EXPORT_SYMBOL_GPL(imx_check_clk_hws); +struct clk_hw *imx_get_clk_hw_from_dt(struct device_node *np, + const char *name) +{ + struct of_phandle_args clkspec; + struct clk *clk; + + clkspec.np = of_find_node_by_name(np, name); + if (clkspec.np) { + clk = of_clk_get_from_provider(&clkspec); + if (!IS_ERR(clk)) { + pr_debug("%s: got %s clock\n", __func__, name); + of_node_put(clkspec.np); + return __clk_get_hw(clk); + } + } + + pr_err("%s: failed to %s clock\n", __func__, name); + return ERR_PTR(-ENODEV); +} +EXPORT_SYMBOL_GPL(imx_get_clk_hw_from_dt); + static struct clk *imx_obtain_fixed_clock_from_dt(const char *name) { struct of_phandle_args phandle; diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h index 86538c990a0d..a0e6b8357eb7 100644 --- a/drivers/clk/imx/clk.h +++ b/drivers/clk/imx/clk.h @@ -294,6 +294,9 @@ struct clk_hw *clk_hw_register_gate2(struct device *dev, const char *name, u8 clk_gate_flags, spinlock_t *lock, unsigned int *share_count); +struct clk_hw *imx_get_clk_hw_from_dt(struct device_node *np, + const char *name); + struct clk * imx_obtain_fixed_clock( const char *name, unsigned long rate); -- 2.32.0
|  |