On Mon, Oct 03, 2016 at 07:40:47AM -0700, Andrey Smirnov wrote:
> Port imx_check_clocks() and imx_obtain_fixed_clock() from Linux kernel.
>
> Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
> ---
> arch/arm/mach-imx/clk.h | 4 ++++
> drivers/clk/Makefile | 1 +
> drivers/clk/imx/Makefile | 1 +
> drivers/clk/imx/clk.c | 49 ++++++++++++++++++++++++++++++++++++++++++++++++
> 4 files changed, 55 insertions(+)
> create mode 100644 drivers/clk/imx/Makefile
> create mode 100644 drivers/clk/imx/clk.c
>
> diff --git a/arch/arm/mach-imx/clk.h b/arch/arm/mach-imx/clk.h
> index 35e480f..f96e5d2 100644
> --- a/arch/arm/mach-imx/clk.h
> +++ b/arch/arm/mach-imx/clk.h
> @@ -109,4 +109,8 @@ static inline struct clk *imx_clk_busy_mux(const char *name, void __iomem *reg,
> struct clk *imx_clk_gate_exclusive(const char *name, const char *parent,
> void __iomem *reg, u8 shift, u32 exclusive_mask);
>
> +void imx_check_clocks(struct clk *clks[], unsigned int count);
> +struct clk * __init imx_obtain_fixed_clock(const char *name, unsigned long rate);
> +
> +
> #endif /* __IMX_CLK_H */
> diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
> index 0fe8f1e..6dc82ea 100644
> --- a/drivers/clk/Makefile
> +++ b/drivers/clk/Makefile
> @@ -9,3 +9,4 @@ obj-$(CONFIG_ARCH_ROCKCHIP) += rockchip/
> obj-$(CONFIG_ARCH_TEGRA) += tegra/
> obj-$(CONFIG_CLK_SOCFPGA) += socfpga.o
> obj-$(CONFIG_MACH_MIPS_ATH79) += clk-ar933x.o
> +obj-$(CONFIG_COMMON_CLK) += imx/
> diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile
> new file mode 100644
> index 0000000..0303c0b
> --- /dev/null
> +++ b/drivers/clk/imx/Makefile
> @@ -0,0 +1 @@
> +obj-y += clk.o
> diff --git a/drivers/clk/imx/clk.c b/drivers/clk/imx/clk.c
> new file mode 100644
> index 0000000..0357048
> --- /dev/null
> +++ b/drivers/clk/imx/clk.c
We currently have the i.MX clock support in arch/arm/mach-imx/. This may
or may not be changed, but until it is, other i.MX clock support code
should go to arch/arm/mach-imx/ aswell.
> @@ -0,0 +1,49 @@
> +#include <common.h>
> +#include <init.h>
> +#include <driver.h>
> +#include <linux/clk.h>
> +#include <io.h>
> +#include <of.h>
> +#include <linux/clkdev.h>
> +#include <linux/err.h>
> +
> +#include "../../../arch/arm/mach-imx/clk.h"
#include <mach/clk.h>
> +
> +void __init imx_check_clocks(struct clk *clks[], unsigned int count)
> +{
> + unsigned i;
> +
> + for (i = 0; i < count; i++)
> + if (IS_ERR(clks[i]))
> + pr_err("i.MX clk %u: register failed with %ld\n",
> + i, PTR_ERR(clks[i]));
> +}
> +
> +static struct clk * __init imx_obtain_fixed_clock_from_dt(const char *name)
> +{
> + struct of_phandle_args phandle;
> + struct clk *clk = ERR_PTR(-ENODEV);
> + char *path;
> +
> + path = basprintf("/clocks/%s", name);
> + if (!path)
> + return ERR_PTR(-ENOMEM);
> +
> + phandle.np = of_find_node_by_path(path);
> + kfree(path);
> +
> + if (phandle.np)
> + clk = of_clk_get_from_provider(&phandle);
> +
> + return clk;
> +}
Do we need this anyway? We already have clk providers for fixed-clock.
Hm, looking further, maybe a later patch explains.
Sascha
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
_______________________________________________
barebox mailing list
barebox@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/barebox
