From mboxrd@z Thu Jan  1 00:00:00 1970
From: Baruch Siach <baruch@tkos.co.il>
Date: Sun, 12 Jan 2020 12:21:05 +0200
Subject: [PATCH 05/10] arm: mvebu: clearfog: Add option for 2.5 Gbps SFP
In-Reply-To: <20200111193639.19022-5-mrjoel@lixil.net>
References: <20200111193639.19022-1-mrjoel@lixil.net>
 <20200111193639.19022-5-mrjoel@lixil.net>
Message-ID: <87pnfpynzi.fsf@tarshish>
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To: u-boot@lists.denx.de

Hi Joel,

On Sat, Jan 11 2020, Joel Johnson wrote:
> Signed-off-by: Joel Johnson <mrjoel@lixil.net>
> ---
>
>  board/solidrun/clearfog/Kconfig    | 7 +++++++
>  board/solidrun/clearfog/clearfog.c | 4 ++++
>  2 files changed, 11 insertions(+)
>
> diff --git a/board/solidrun/clearfog/Kconfig b/board/solidrun/clearfog/Kconfig
> index 30f53508c2..53f01daf7a 100644
> --- a/board/solidrun/clearfog/Kconfig
> +++ b/board/solidrun/clearfog/Kconfig
> @@ -24,4 +24,11 @@ config CLEARFOG_CON2_SATA
>  	 modules, but the desired protocol must be configured at build
>  	 time since it affects the SerDes topology layout.
>
> +config CLEARFOG_SFP_25GB
> +	bool "Enable 2.5 Gbps mode for SFP"
> +	help
> +	 Set the SFP module connection to support 2.5 Gbps transfer speed for the
> +	 SGMII connection (requires a supporting SFP). By default, transfer speed
> +	 of 1.25 Gbps is used, suitable for a more common 1 Gbps SFP module.

Note that recent Linux kernels support run-time SFP detection and serdes
speed configuration. This patch is still useful for older kernels.

baruch

> +
>  endmenu
> diff --git a/board/solidrun/clearfog/clearfog.c b/board/solidrun/clearfog/clearfog.c
> index 4f51b19ce9..247785ac56 100644
> --- a/board/solidrun/clearfog/clearfog.c
> +++ b/board/solidrun/clearfog/clearfog.c
> @@ -44,7 +44,11 @@ static struct serdes_map board_serdes_map[] = {
>  #else
>  	{PEX2, SERDES_SPEED_5_GBPS, PEX_ROOT_COMPLEX_X1, 0, 0},
>  #endif
> +#if defined (CONFIG_CLEARFOG_SFP_25GB)
> +	{SGMII2, SERDES_SPEED_3_125_GBPS, SERDES_DEFAULT_MODE, 0, 0},
> +#else
>  	{SGMII2, SERDES_SPEED_1_25_GBPS, SERDES_DEFAULT_MODE, 0, 0},
> +#endif
>  };
>
>  int hws_board_topology_load(struct serdes_map **serdes_map_array, u8 *count)

--
     http://baruch.siach.name/blog/                  ~. .~   Tk Open Systems
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