[U-Boot] [PATCH u-boot-marvell v3 02/10] board: turris_mox: Change SERDES map depending on module topology

[Stefan Roese]

On 20.11.18 13:04, Marek Behún wrote:
> When SFP module is connected directly to CPU module we want the SGMII
> lane speed at 1.25 Gbps.
> 
> This is a temporary solution till there is a comphy driver in the kernel
> capable of changing SGMII speed at runtime.
> 
> Signed-off-by: Marek Behún <marek.behun at nic.cz>

Reviewed-by: Stefan Roese <sr at denx.de>

Thanks,
Stefan

> ---
>   board/CZ.NIC/turris_mox/turris_mox.c | 33 ++++++++++++++++++++++++++++
>   1 file changed, 33 insertions(+)
> 
> diff --git a/board/CZ.NIC/turris_mox/turris_mox.c b/board/CZ.NIC/turris_mox/turris_mox.c
> index 415c462493..3c0ab58756 100644
> --- a/board/CZ.NIC/turris_mox/turris_mox.c
> +++ b/board/CZ.NIC/turris_mox/turris_mox.c
> @@ -8,6 +8,7 @@
>   #include <dm.h>
>   #include <clk.h>
>   #include <spi.h>
> +#include <mvebu/comphy.h>
>   #include <linux/string.h>
>   #include <linux/libfdt.h>
>   #include <fdt_support.h>
> @@ -206,6 +207,38 @@ static int mox_get_topology(const u8 **ptopology, int *psize, int *pis_sd)
>   	return 0;
>   }
>   
> +int comphy_update_map(struct comphy_map *serdes_map, int count)
> +{
> +	int ret, i, size, sfpindex = -1, swindex = -1;
> +	const u8 *topology;
> +
> +	ret = mox_get_topology(&topology, &size, NULL);
> +	if (ret)
> +		return ret;
> +
> +	for (i = 0; i < size; ++i) {
> +		if (topology[i] == MOX_MODULE_SFP && sfpindex == -1)
> +			sfpindex = i;
> +		else if ((topology[i] == MOX_MODULE_TOPAZ ||
> +			  topology[i] == MOX_MODULE_PERIDOT) &&
> +			 swindex == -1)
> +			swindex = i;
> +	}
> +
> +	if (sfpindex >= 0 && swindex >= 0) {
> +		if (sfpindex < swindex)
> +			serdes_map[0].speed = PHY_SPEED_1_25G;
> +		else
> +			serdes_map[0].speed = PHY_SPEED_3_125G;
> +	} else if (sfpindex >= 0) {
> +		serdes_map[0].speed = PHY_SPEED_1_25G;
> +	} else if (swindex >= 0) {
> +		serdes_map[0].speed = PHY_SPEED_3_125G;
> +	}
> +
> +	return 0;
> +}
> +
>   int last_stage_init(void)
>   {
>   	int ret, i;
> 

Viele Grüße,
Stefan

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