target/linux/layerscape/patches-5.4/701-net-0302-staging-fsl_ppfe-eth-remove-jumbo-frame-enable-from-.patch

   1 From 162c09cee1b5b00e09fd99273fd2f8c460c0d989 Mon Sep 17 00:00:00 2001
   2 From: Calvin Johnson <calvin.johnson@nxp.com>
   3 Date: Wed, 20 Jun 2018 10:23:16 +0530
   4 Subject: [PATCH] staging: fsl_ppfe/eth: remove jumbo frame enable from gemac
   5  init
   6
   7 MAC Receive Control Register was configured to allow jumbo frames.
   8 This is removed as jumbo frames can be supported anytime by changing
   9 mtu which will in turn modify MAX_FL field of MAC RCR.
  10 Jumbo frames caused pfe to hang on LS1012A rev 1.0 Silicon due to
  11 erratum A-010897.
  12
  13 Signed-off-by: Calvin Johnson <calvin.johnson@nxp.com>
  14 ---
  15  drivers/staging/fsl_ppfe/pfe_eth.c | 1 -
  16  drivers/staging/fsl_ppfe/pfe_hal.c | 9 ---------
  17  2 files changed, 10 deletions(-)
  18
  19 --- a/drivers/staging/fsl_ppfe/pfe_eth.c
  20 +++ b/drivers/staging/fsl_ppfe/pfe_eth.c
  21 @@ -1272,7 +1272,6 @@ static int pfe_gemac_init(struct pfe_eth
  22         gemac_set_config(priv->EMAC_baseaddr, &cfg);
  23         gemac_allow_broadcast(priv->EMAC_baseaddr);
  24         gemac_enable_1536_rx(priv->EMAC_baseaddr);
  25 -       gemac_enable_rx_jmb(priv->EMAC_baseaddr);
  26         gemac_enable_stacked_vlan(priv->EMAC_baseaddr);
  27         gemac_enable_pause_rx(priv->EMAC_baseaddr);
  28         gemac_set_bus_width(priv->EMAC_baseaddr, 64);
  29 --- a/drivers/staging/fsl_ppfe/pfe_hal.c
  30 +++ b/drivers/staging/fsl_ppfe/pfe_hal.c
  31 @@ -1028,15 +1028,6 @@ void gemac_set_rx_max_fl(void *base, int
  32                 | (mtu << 16), base + EMAC_RCNTRL_REG);
  33  }
  34
  35 -/* GEMAC enable jumbo function.
  36 - * @param[in]  base    GEMAC base address
  37 - */
  38 -void gemac_enable_rx_jmb(void *base)
  39 -{
  40 -       writel((readl(base + EMAC_RCNTRL_REG) & PFE_RCR_MAX_FL_MASK)
  41 -               | (JUMBO_FRAME_SIZE << 16), base + EMAC_RCNTRL_REG);
  42 -}
  43 -
  44  /* GEMAC enable stacked vlan function.
  45   * @param[in]  base    GEMAC base address
  46   */