[Skiboot] [PATCH 3/5] i2c: Log the engine clock frequency at boot

[Oliver O'Halloran]

Reviewed-by: Oliver O'Halloran <oohall at gmail.com>

On Mon, Apr 24, 2017 at 2:45 PM, Benjamin Herrenschmidt
<benh at kernel.crashing.org> wrote:
> Since it's a non-trivial derivation from HDAT values,
> it's useful to log it for diagnostics.
>
> Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>
> ---
>  hw/p8-i2c.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/hw/p8-i2c.c b/hw/p8-i2c.c
> index 52520dd..bfbc31d 100644
> --- a/hw/p8-i2c.c
> +++ b/hw/p8-i2c.c
> @@ -186,6 +186,7 @@ enum p8_i2c_master_type {
>  struct p8_i2c_master {
>         struct lock             lock;           /* Lock to guard the members */
>         enum p8_i2c_master_type type;           /* P8 vs. Centaur */
> +       uint64_t                start_time;     /* Request start time */
>         uint64_t                poll_interval;  /* Polling interval  */
>         uint64_t                byte_timeout;   /* Timeout per byte */
>         uint64_t                xscom_base;     /* xscom base of i2cm */
> @@ -1485,8 +1486,8 @@ static void p8_i2c_init_one(struct dt_node *i2cm, enum p8_i2c_master_type type)
>         init_timer(&master->recovery, p8_i2c_recover, master);
>         init_timer(&master->sensor_cache, p8_i2c_enable_scache, master);
>
> -       prlog(PR_INFO, "I2C: Chip %08x Eng. %d\n",
> -             master->chip_id, master->engine_id);
> +       prlog(PR_INFO, "I2C: Chip %08x Eng. %d Clock %d Mhz\n",
> +             master->chip_id, master->engine_id, lb_freq / 1000000);
>
>         /* Disable OCC cache during inits */
>         if (master->type == I2C_CENTAUR) {
> --
> 2.9.3
>
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