Commit 95c2e689 authored by Diogo Ivo's avatar Diogo Ivo Committed by Paolo Abeni
Browse files

net: ti: icssg-prueth: Adjust IPG configuration for SR1.0 

Correctly adjust the IPG based on the Silicon Revision.

Based on the work of Roger Quadros, Vignesh Raghavendra
and Grygorii Strashko in TI's 5.10 SDK [1].

[1]: https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/tree/?h=ti-linux-5.10.y



Co-developed-by: default avatarJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: default avatarJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: default avatarDiogo Ivo <diogo.ivo@siemens.com>
Reviewed-by: default avatarRoger Quadros <rogerq@kernel.org>
Reviewed-by: default avatarMD Danish Anwar <danishanwar@ti.com>
Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent 8623dea2

drivers/net/ethernet/ti/icssg/icssg_config.c

+11 −3
Original line number Diff line number Diff line
@@ -20,6 +20,8 @@ 
/* IPG is in core_clk cycles */

#define MII_RT_TX_IPG_100M	0x17

#define MII_RT_TX_IPG_1G	0xb

#define MII_RT_TX_IPG_100M_SR1	0x166

#define MII_RT_TX_IPG_1G_SR1	0x1a



#define	ICSSG_QUEUES_MAX		64

#define	ICSSG_QUEUE_OFFSET		0xd00
@@ -202,23 +204,29 @@ void icssg_config_ipg(struct prueth_emac *emac) 
{

	struct prueth *prueth = emac->prueth;

	int slice = prueth_emac_slice(emac);

	u32 ipg;



	switch (emac->speed) {

	case SPEED_1000:

		icssg_mii_update_ipg(prueth->mii_rt, slice, MII_RT_TX_IPG_1G);

		ipg = emac->is_sr1 ? MII_RT_TX_IPG_1G_SR1 : MII_RT_TX_IPG_1G;

		break;

	case SPEED_100:

		icssg_mii_update_ipg(prueth->mii_rt, slice, MII_RT_TX_IPG_100M);

		ipg = emac->is_sr1 ? MII_RT_TX_IPG_100M_SR1 : MII_RT_TX_IPG_100M;

		break;

	case SPEED_10:

		/* Firmware hardcodes IPG for SR1.0 */

		if (emac->is_sr1)

			return;

		/* IPG for 10M is same as 100M */

		icssg_mii_update_ipg(prueth->mii_rt, slice, MII_RT_TX_IPG_100M);

		ipg = MII_RT_TX_IPG_100M;

		break;

	default:

		/* Other links speeds not supported */

		netdev_err(emac->ndev, "Unsupported link speed\n");

		return;

	}



	icssg_mii_update_ipg(prueth->mii_rt, slice, ipg);

}



static void emac_r30_cmd_init(struct prueth_emac *emac)