diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0407-LF-924-net-enetc-Set-MAC-Rx-FIFO-to-recommended-valu.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0407-LF-924-net-enetc-Set-MAC-Rx-FIFO-to-recommended-valu.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0407-LF-924-net-enetc-Set-MAC-Rx-FIFO-to-recommended-valu.patch b/target/linux/layerscape/patches-5.4/701-net-0407-LF-924-net-enetc-Set-MAC-Rx-FIFO-to-recommended-valu.patch new file mode 100644 index 0000000000..a288938b2a --- /dev/null +++ b/target/linux/layerscape/patches-5.4/701-net-0407-LF-924-net-enetc-Set-MAC-Rx-FIFO-to-recommended-valu.patch @@ -0,0 +1,43 @@ +From 9507f517ac4080627515c31c937f45a4a58ccbe4 Mon Sep 17 00:00:00 2001 +From: Alex Marginean <alexandru.marginean@nxp.com> +Date: Fri, 14 Feb 2020 17:28:26 +0000 +Subject: [PATCH] LF-924: net/enetc: Set MAC Rx FIFO to recommended value + +On LS1028A the MAC Rx FIFO defaults to value 2, which is too high and may +lead to Rx lock-up under traffic. Set it to 1 instead, as recommended by +the hardware team. + +Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com> +Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com> +Acked-by: Jason Liu <jason.hui.liu@nxp.com> +--- + drivers/net/ethernet/freescale/enetc/enetc_hw.h | 2 ++ + drivers/net/ethernet/freescale/enetc/enetc_pf.c | 6 ++++++ + 2 files changed, 8 insertions(+) + +--- a/drivers/net/ethernet/freescale/enetc/enetc_hw.h ++++ b/drivers/net/ethernet/freescale/enetc/enetc_hw.h +@@ -224,6 +224,8 @@ enum enetc_bdr_type {TX, RX}; + #define ENETC_PM0_MAXFRM 0x8014 + #define ENETC_SET_TX_MTU(val) ((val) << 16) + #define ENETC_SET_MAXFRM(val) ((val) & 0xffff) ++#define ENETC_PM0_RX_FIFO 0x801c ++#define ENETC_PM0_RX_FIFO_VAL 1 + + #define ENETC_PM_IMDIO_BASE 0x8030 + /* PCS registers */ +--- a/drivers/net/ethernet/freescale/enetc/enetc_pf.c ++++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.c +@@ -536,6 +536,12 @@ static void enetc_configure_port_mac(str + enetc_port_wr(hw, ENETC_PM0_IF_MODE, ENETC_PM0_IFM_XGMII); + enetc_port_wr(hw, ENETC_PM1_IF_MODE, ENETC_PM0_IFM_XGMII); + } ++ ++ /* on LS1028A the MAC Rx FIFO defaults to value 2, which is too high and ++ * may lead to Rx lock-up under traffic. Set it to 1 instead, as ++ * recommended by the hardware team. ++ */ ++ enetc_port_wr(hw, ENETC_PM0_RX_FIFO, ENETC_PM0_RX_FIFO_VAL); + } + + static void enetc_configure_port_pmac(struct enetc_hw *hw) |