lkml.org 
[lkml]   [2013]   [Jun]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH 18/33] clk: ux500: Add a 2-cell Device Tree parser for obtaining PRCC clocks
From
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
>


\
 
 \ /
  Last update: 2013-06-10 23:21    [W:0.247 / U:0.036 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site