On Monday, August 22, 2011 03:41:36 PM Helmut Raiger wrote:
> Signed-off-by: Helmut Raiger <helmut.rai...@hale.at>
> ---
> arch/arm/cpu/arm1136/mx31/generic.c | 14 ++++++++++++++
> arch/arm/include/asm/arch-mx31/clock.h | 1 +
> 2 files changed, 15 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/cpu/arm1136/mx31/generic.c
> b/arch/arm/cpu/arm1136/mx31/generic.c index 248431b..b077d29 100644
> --- a/arch/arm/cpu/arm1136/mx31/generic.c
> +++ b/arch/arm/cpu/arm1136/mx31/generic.c
> @@ -72,6 +72,18 @@ static u32 mx31_get_ipg_clk(void)
> return freq;
> }
>
> +/* hsp is the clock for the ipu */
> +static u32 mx31_get_hsp_clk(void)
> +{
> + u32 freq = mx31_get_mcu_main_clk();
> + u32 pdr0 = __REG(CCM_PDR0);
Can't we do readl() here?
> +
> + /* divided by HSP_PODF in PDR0 */
> + freq /= ((pdr0 >> 11) & 0x7) + 1;
Um, don't we have defined constants for those magic numbers already?
> +
> + return freq;
> +}
> +
> void mx31_dump_clocks(void)
> {
> u32 cpufreq = mx31_get_mcu_main_clk();
> @@ -88,6 +100,8 @@ unsigned int mxc_get_clock(enum mxc_clock clk)
> case MXC_CSPI_CLK:
> case MXC_UART_CLK:
> return mx31_get_ipg_clk();
> + case MXC_IPU_CLK:
> + return mx31_get_hsp_clk();
> }
> return -1;
> }
> diff --git a/arch/arm/include/asm/arch-mx31/clock.h
> b/arch/arm/include/asm/arch-mx31/clock.h index fb035c4..b0aa1ce 100644
> --- a/arch/arm/include/asm/arch-mx31/clock.h
> +++ b/arch/arm/include/asm/arch-mx31/clock.h
> @@ -29,6 +29,7 @@ enum mxc_clock {
> MXC_IPG_CLK,
> MXC_CSPI_CLK,
> MXC_UART_CLK,
> + MXC_IPU_CLK
> };
>
> unsigned int mxc_get_clock(enum mxc_clock clk);
Cheers
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