On Fri, Dec 16, 2011 at 11:35:39AM -0500, Mark Langsdorf wrote:
> Is there a portable/generic approach for other drivers that may
> want to use arm-cpufreq.c? arm_clk is not normally defined for
> my SoC and I don't see an easy way to pull it in.
Could you tell me the details? Is your board arch/arm/mach-highbank/ Rob
maintained?
clk API is the most generic way for arm as far as I find out.
Thanks
Richard
>
> --Mark Langsdorf
> Calxeda, Inc.
>
> ________________________________________
> From: Richard Zhao [richard.zhao@xxxxxxxxxx]
> Sent: Friday, December 16, 2011 4:31 AM
> To: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; cpufreq@xxxxxxxxxxxxxxx; devicetree-discuss@xxxxxxxxxxxxxxxx
> Cc: linux@xxxxxxxxxxxxxxxx; davej@xxxxxxxxxx; kernel@xxxxxxxxxxxxxx; shawn.guo@xxxxxxxxxx; eric.miao@xxxxxxxxxx; Mark Langsdorf; linaro-dev@xxxxxxxxxxxxxxxx; patches@xxxxxxxxxx; Richard Zhao
> Subject: [PATCH V2 3/4] arm/imx6q: register arm_clk as cpu to clkdev
>
> cpufreq needs cpu clock to change frequency.
>
> Signed-off-by: Richard Zhao <richard.zhao@xxxxxxxxxx>
> ---
> arch/arm/mach-imx/clock-imx6q.c | 1 +
> 1 files changed, 1 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-imx/clock-imx6q.c b/arch/arm/mach-imx/clock-imx6q.c
> index 039a7ab..72acbc2 100644
> --- a/arch/arm/mach-imx/clock-imx6q.c
> +++ b/arch/arm/mach-imx/clock-imx6q.c
> @@ -1911,6 +1911,7 @@ static struct clk_lookup lookups[] = {
> _REGISTER_CLOCK(NULL, "gpmi_io_clk", gpmi_io_clk),
> _REGISTER_CLOCK(NULL, "usboh3_clk", usboh3_clk),
> _REGISTER_CLOCK(NULL, "sata_clk", sata_clk),
> + _REGISTER_CLOCK(NULL, "cpu", arm_clk),
> };
>
> int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode)
> --
> 1.7.5.4
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