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net: dsa: ocelot: document why reset procedure is different for felix/seville

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The overall idea (issue soft reset, enable memories, initialize
memories, enable core) is the same, so it would make sense that an
attempt is made to unify the procedures.

It is not immediately obvious that the fields are not part of the same
register targets, though. So add a comment.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vladimir Oltean 2020-09-18 13:57:46 +03:00 committed by David S. Miller
parent 9a73f0b580
commit c129fc55fe
2 changed files with 7 additions and 0 deletions
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3
drivers/net/dsa/ocelot/felix_vsc9959.c
View file

@ -737,6 +737,9 @@ static int vsc9959_sys_ram_init_status(struct ocelot *ocelot)
return ocelot_read(ocelot, SYS_RAM_INIT);
}
/* CORE_ENA is in SYS:SYSTEM:RESET_CFG
* RAM_INIT is in SYS:RAM_CTRL:RAM_INIT
*/
static int vsc9959_reset(struct ocelot *ocelot)
{
int val, err;

4
drivers/net/dsa/ocelot/seville_vsc9953.c
View file

@ -820,6 +820,10 @@ static int vsc9953_mdio_read(struct mii_bus *bus, int phy_id, int regnum)
return err;
}
/* CORE_ENA is in SYS:SYSTEM:RESET_CFG
* MEM_INIT is in SYS:SYSTEM:RESET_CFG
* MEM_ENA is in SYS:SYSTEM:RESET_CFG
*/
static int vsc9953_reset(struct ocelot *ocelot)
{
int val, err;