Messages in this thread | | | Date | Mon, 10 Jun 2013 22:54:32 +0200 | Subject | Re: [PATCH 18/33] clk: ux500: Add a 2-cell Device Tree parser for obtaining PRCC clocks | From | Ulf Hansson <> |
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On 6 June 2013 14:17, Lee Jones <lee.jones@linaro.org> wrote: > PRCC (peripheral and kernel) clocks are specified using a property tuple > <&phandle base bit>, where 'base' is the peripheral (1, 2, 3, 5 or 6), > and bit is read-in value into that peripheral stipulated by the hardware > specification. > > Cc: Mike Turquette <mturquette@linaro.org> > Cc: Ulf Hansson <ulf.hansson@linaro.org> > Signed-off-by: Lee Jones <lee.jones@linaro.org> > --- > drivers/clk/ux500/u8500_clk.c | 19 +++++++++++++++++++ > 1 file changed, 19 insertions(+) > > diff --git a/drivers/clk/ux500/u8500_clk.c b/drivers/clk/ux500/u8500_clk.c > index ef948ff..3a7040b 100644 > --- a/drivers/clk/ux500/u8500_clk.c > +++ b/drivers/clk/ux500/u8500_clk.c > @@ -15,6 +15,25 @@ > #include <linux/platform_data/clk-ux500.h> > #include "clk.h" > > +struct clk *ux500_twocell_get(struct of_phandle_args *clkspec, void *data) > +{ > + struct clk **clk_data = data; > + unsigned int base, bit; > + > + if (clkspec->args_count != 2) > + return ERR_PTR(-EINVAL); > + > + base = clkspec->args[0]; > + bit = clkspec->args[1]; > + > + if (base != 1 && base != 2 && base != 3 && base != 5 && base != 6) { > + pr_err("%s: invalid PRCC base %d\n", __func__, base); > + return ERR_PTR(-EINVAL); > + } > + > + return PRCC_SHOW(clk_data, base, bit);
Where did this macro come from?
Kind regards Ulf Hansson
> +} > + > const static struct of_device_id u8500_clk_of_match[] = { > { .compatible = "stericsson,u8500-clks", }, > { }, > -- > 1.7.10.4 >
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