sfc: Add support for SFN4111T

Add support code for the SFN4111T 100/1000/10GBASE-T reference design,
based in part on the existing code for the SFE4001.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c
index db8e147f00b2..84771a792099 100644
--- a/drivers/net/sfc/falcon.c
+++ b/drivers/net/sfc/falcon.c
@@ -2971,6 +2971,13 @@ int falcon_init_nic(struct efx_nic *efx)
         EFX_SET_OWORD_FIELD(temp, ONCHIP_SRAM, 1);
         falcon_write(efx, &temp, NIC_STAT_REG);
 
+        /* Set the source of the GMAC clock */
+        if (falcon_rev(efx) == FALCON_REV_B0) {
+                falcon_read(efx, &temp, GPIO_CTL_REG_KER);
+                EFX_SET_OWORD_FIELD(temp, GPIO_USE_NIC_CLK, true);
+                falcon_write(efx, &temp, GPIO_CTL_REG_KER);
+        }
+
         /* Set buffer table mode */
         EFX_POPULATE_OWORD_1(temp, BUF_TBL_MODE, BUF_TBL_MODE_FULL);
         falcon_write(efx, &temp, BUF_TBL_CFG_REG_KER);