[U-Boot-Users] [PATCH] MPC8568E-MDS: reset UCCs to use them reliably

[Andy Fleming]

applied, thanks!

On 10/22/07, Anton Vorontsov <avorontsov at ru.mvista.com> wrote:
> In order to use GETH1 and GETH2 on the MPC8568E-MDS, we should reset
> UCCs.
>
> p.s Similar code exists in the Linux kernel board file (for capability
> reasons with older U-Boots), but should be removed some day.
>
> Signed-off-by: Anton Vorontsov <avorontsov at ru.mvista.com>
> ---
>  board/mpc8568mds/bcsr.c       |   21 +++++++++++++++++++++
>  board/mpc8568mds/bcsr.h       |    9 +++++++++
>  board/mpc8568mds/mpc8568mds.c |    3 +++
>  3 files changed, 33 insertions(+), 0 deletions(-)
>
> diff --git a/board/mpc8568mds/bcsr.c b/board/mpc8568mds/bcsr.c
> index aae0f98..791a50f 100644
> --- a/board/mpc8568mds/bcsr.c
> +++ b/board/mpc8568mds/bcsr.c
> @@ -21,6 +21,8 @@
>   */
>
>  #include <common.h>
> +#include <asm/io.h>
> +
>  #include "bcsr.h"
>
>  void enable_8568mds_duart()
> @@ -54,3 +56,22 @@ void enable_8568mds_qe_mdio()
>
>         bcsr[7] |= 0x01;
>  }
> +
> +#if defined(CONFIG_UEC_ETH1) || defined(CONFIG_UEC_ETH2)
> +void reset_8568mds_uccs(void)
> +{
> +       volatile u8 *bcsr = (u8 *)(CFG_BCSR);
> +
> +       /* Turn off UCC1 & UCC2 */
> +       out_8(&bcsr[8], in_8(&bcsr[8]) & ~BCSR_UCC1_GETH_EN);
> +       out_8(&bcsr[9], in_8(&bcsr[9]) & ~BCSR_UCC2_GETH_EN);
> +
> +       /* Mode is RGMII, all bits clear */
> +       out_8(&bcsr[11], in_8(&bcsr[11]) & ~(BCSR_UCC1_MODE_MSK |
> +                                            BCSR_UCC2_MODE_MSK));
> +
> +       /* Turn UCC1 & UCC2 on */
> +       out_8(&bcsr[8], in_8(&bcsr[8]) | BCSR_UCC1_GETH_EN);
> +       out_8(&bcsr[9], in_8(&bcsr[9]) | BCSR_UCC2_GETH_EN);
> +}
> +#endif
> diff --git a/board/mpc8568mds/bcsr.h b/board/mpc8568mds/bcsr.h
> index aefd9bf..f7f70bc 100644
> --- a/board/mpc8568mds/bcsr.h
> +++ b/board/mpc8568mds/bcsr.h
> @@ -90,6 +90,11 @@
>         7       Flash write protect
>  */
>
> +#define BCSR_UCC1_GETH_EN      (0x1 << 7)
> +#define BCSR_UCC2_GETH_EN      (0x1 << 7)
> +#define BCSR_UCC1_MODE_MSK     (0x3 << 4)
> +#define BCSR_UCC2_MODE_MSK     (0x3 << 0)
> +
>  /*BCSR Utils functions*/
>
>  void enable_8568mds_duart(void);
> @@ -97,4 +102,8 @@ void enable_8568mds_flash_write(void);
>  void disable_8568mds_flash_write(void);
>  void enable_8568mds_qe_mdio(void);
>
> +#if defined(CONFIG_UEC_ETH1) || defined(CONFIG_UEC_ETH2)
> +void reset_8568mds_uccs(void);
> +#endif
> +
>  #endif /* __BCSR_H_ */
> diff --git a/board/mpc8568mds/mpc8568mds.c b/board/mpc8568mds/mpc8568mds.c
> index 818ff13..2b3f44f 100644
> --- a/board/mpc8568mds/mpc8568mds.c
> +++ b/board/mpc8568mds/mpc8568mds.c
> @@ -106,6 +106,9 @@ int board_early_init_f (void)
>
>         enable_8568mds_duart();
>         enable_8568mds_flash_write();
> +#if defined(CONFIG_UEC_ETH1) || defined(CONFIG_UEC_ETH2)
> +       reset_8568mds_uccs();
> +#endif
>  #if defined(CONFIG_QE) && !defined(CONFIG_eTSEC_MDIO_BUS)
>         enable_8568mds_qe_mdio();
>  #endif
> --
> 1.5.0.6
>
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