Commit fb9e6039 authored by Nikita Yushchenko's avatar Nikita Yushchenko Committed by Paolo Abeni
Browse files

net: renesas: rswitch: fix initial MPIC register setting 



MPIC.PIS must be set per phy interface type.
MPIC.LSC must be set per speed.

Do that strictly per datasheet, instead of hardcoding MPIC.PIS to GMII.

Fixes: 3590918b ("net: ethernet: renesas: Add support for "Ethernet Switch"")
Signed-off-by: default avatarNikita Yushchenko <nikita.yoush@cogentembedded.com>
Reviewed-by: default avatarMichal Swiatkowski <michal.swiatkowski@linux.intel.com>
Link: https://patch.msgid.link/20241211053012.368914-1-nikita.yoush@cogentembedded.com


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent 3d64c3d3

drivers/net/ethernet/renesas/rswitch.c

+21 −6
Original line number Diff line number Diff line
@@ -1116,25 +1116,40 @@ static int rswitch_etha_wait_link_verification(struct rswitch_etha *etha) 


static void rswitch_rmac_setting(struct rswitch_etha *etha, const u8 *mac)

{

	u32 val;

	u32 pis, lsc;



	rswitch_etha_write_mac_address(etha, mac);



	switch (etha->phy_interface) {

	case PHY_INTERFACE_MODE_SGMII:

		pis = MPIC_PIS_GMII;

		break;

	case PHY_INTERFACE_MODE_USXGMII:

	case PHY_INTERFACE_MODE_5GBASER:

		pis = MPIC_PIS_XGMII;

		break;

	default:

		pis = FIELD_GET(MPIC_PIS, ioread32(etha->addr + MPIC));

		break;

	}



	switch (etha->speed) {

	case 100:

		val = MPIC_LSC_100M;

		lsc = MPIC_LSC_100M;

		break;

	case 1000:

		val = MPIC_LSC_1G;

		lsc = MPIC_LSC_1G;

		break;

	case 2500:

		val = MPIC_LSC_2_5G;

		lsc = MPIC_LSC_2_5G;

		break;

	default:

		return;

		lsc = FIELD_GET(MPIC_LSC, ioread32(etha->addr + MPIC));

		break;

	}



	iowrite32(MPIC_PIS_GMII | val, etha->addr + MPIC);

	rswitch_modify(etha->addr, MPIC, MPIC_PIS | MPIC_LSC,

		       FIELD_PREP(MPIC_PIS, pis) | FIELD_PREP(MPIC_LSC, lsc));

}



static void rswitch_etha_enable_mii(struct rswitch_etha *etha)

drivers/net/ethernet/renesas/rswitch.h

+7 −7
Original line number Diff line number Diff line
@@ -724,13 +724,13 @@ enum rswitch_etha_mode { 


#define EAVCC_VEM_SC_TAG	(0x3 << 16)



#define MPIC_PIS_MII		0x00

#define MPIC_PIS_GMII		0x02

#define MPIC_PIS_XGMII		0x04

#define MPIC_LSC_SHIFT		3

#define MPIC_LSC_100M		(1 << MPIC_LSC_SHIFT)

#define MPIC_LSC_1G		(2 << MPIC_LSC_SHIFT)

#define MPIC_LSC_2_5G		(3 << MPIC_LSC_SHIFT)

#define MPIC_PIS		GENMASK(2, 0)

#define MPIC_PIS_GMII		2

#define MPIC_PIS_XGMII		4

#define MPIC_LSC		GENMASK(5, 3)

#define MPIC_LSC_100M		1

#define MPIC_LSC_1G		2

#define MPIC_LSC_2_5G		3



#define MDIO_READ_C45		0x03

#define MDIO_WRITE_C45		0x01