[U-Boot] [PATCH 07/10] ddr: altera: Zero DM IN delay in scc_mgr_zero_group()

[George Broz]

On 6 April 2016 at 19:04, Marek Vasut <marex at denx.de> wrote:
> This one last set of delay configuration registers was not properly
> zeroed out originally, fix it and zero them out.
>
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Dinh Nguyen <dinguyen at opensource.altera.com>
> Cc: Chin Liang See <clsee at altera.com>
> ---
>  drivers/ddr/altera/sequencer.c | 16 +++++++++++++---
>  1 file changed, 13 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/ddr/altera/sequencer.c b/drivers/ddr/altera/sequencer.c
> index 254b130..0321e3b 100644
> --- a/drivers/ddr/altera/sequencer.c
> +++ b/drivers/ddr/altera/sequencer.c
> @@ -303,15 +303,22 @@ static void scc_mgr_set_dqs_en_delay(u32 read_group, u32 delay)
>         scc_mgr_set(SCC_MGR_DQS_EN_DELAY_OFFSET, read_group, delay);
>  }
>
> +static void scc_mgr_set_dq_in_delay(u32 dq_in_group, u32 delay)
> +{
> +       scc_mgr_set(SCC_MGR_IO_IN_DELAY_OFFSET, dq_in_group, delay);
> +}
> +
>  static void scc_mgr_set_dqs_io_in_delay(u32 delay)
>  {
>         scc_mgr_set(SCC_MGR_IO_IN_DELAY_OFFSET, rwcfg->mem_dq_per_write_dqs,
>                     delay);
>  }
>
> -static void scc_mgr_set_dq_in_delay(u32 dq_in_group, u32 delay)
> +static void scc_mgr_set_dm_in_delay(u32 dm, u32 delay)
>  {
> -       scc_mgr_set(SCC_MGR_IO_IN_DELAY_OFFSET, dq_in_group, delay);
> +       scc_mgr_set(SCC_MGR_IO_IN_DELAY_OFFSET,
> +                   rwcfg->mem_dq_per_write_dqs + 1 + dm,
> +                   delay);
>  }
>
>  static void scc_mgr_set_dq_out1_delay(u32 dq_in_group, u32 delay)
> @@ -584,8 +591,11 @@ static void scc_mgr_zero_group(const u32 write_group, const int out_only)
>                 writel(0xff, &sdr_scc_mgr->dq_ena);
>
>                 /* Zero all DM config settings. */
> -               for (i = 0; i < RW_MGR_NUM_DM_PER_WRITE_GROUP; i++)
> +               for (i = 0; i < RW_MGR_NUM_DM_PER_WRITE_GROUP; i++) {
> +                       if (!out_only)
> +                               scc_mgr_set_dm_in_delay(i, 0);
>                         scc_mgr_set_dm_out1_delay(i, 0);
> +               }
>
>                 /* Multicast to all DM enables. */
>                 writel(0xff, &sdr_scc_mgr->dm_ena);
> --
> 2.7.0
>

Tested on: SoCKit, DE0_Nano_SoC
Tested-by: George Broz <brozgeo at gmail.com>