[PATCHv2 03/11] mxc: Fix Drive Strength Field in the IOMUX controller

[Eric Miao]

On Tue, Feb 2, 2010 at 9:16 PM, Amit Kucheria
<amit.kucheria at canonical.com> wrote:
> i.MX51 defines 4 values:
>
> 00: Low Drive Strength
> 01: Medium Drive Strength
> 10: High Drive Strength
> 11: Max Drive Strength
>
> Signed-off-by: Amit Kucheria <amit.kucheria at canonical.com>
> ---
>  arch/arm/plat-mxc/include/mach/iomux-v3.h |    8 +++++---
>  1 files changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/plat-mxc/include/mach/iomux-v3.h b/arch/arm/plat-mxc/include/mach/iomux-v3.h
> index 1deda01..f2f73d3 100644
> --- a/arch/arm/plat-mxc/include/mach/iomux-v3.h
> +++ b/arch/arm/plat-mxc/include/mach/iomux-v3.h
> @@ -81,11 +81,13 @@ struct pad_desc {
>
>  #define PAD_CTL_ODE                    (1 << 3)
>
> -#define PAD_CTL_DSE_STANDARD           (0 << 1)
> -#define PAD_CTL_DSE_HIGH               (1 << 1)
> -#define PAD_CTL_DSE_MAX                        (2 << 1)
> +#define PAD_CTL_DSE_LOW                        (0 << 1)
> +#define PAD_CTL_DSE_MED                        (1 << 1)
> +#define PAD_CTL_DSE_HIGH               (2 << 1)
> +#define PAD_CTL_DSE_MAX                        (3 << 1)
>

I'm seeing some changes in recent kernel with introduction of PAD_CTL_DRV_*,
which also affects mx3, think it's a tough problem to keep backward
compatibility
now, one way out is to introduce maybe PAD_CTL_DRV_EXTREME specifically
for imx51.

>  #define PAD_CTL_SRE_FAST               (1 << 0)
> +#define PAD_CTL_SRE_SLOW               (0 << 0)
>
>  /*
>  * setups a single pad in the iomuxer
> --
> 1.6.3.3
>
>
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