package/boot/uboot-mediatek/patches/101-17-net-mediatek-optimize-the-switch-reset-delay-wait-ti.patch

   1 From d9a52701f6677889cc3332ab7a888f35cd69cc76 Mon Sep 17 00:00:00 2001
   2 From: Weijie Gao <weijie.gao@mediatek.com>
   3 Date: Wed, 19 Jul 2023 17:16:59 +0800
   4 Subject: [PATCH 17/29] net: mediatek: optimize the switch reset delay wait
   5  time
   6
   7 Not all switches requires 1 second delay after deasserting reset.
   8 MT7531 requires only maximum 200ms.
   9
  10 This patch defines dedicated reset wait time for each switch chip, and will
  11 significantly improve the boot time for boards using MT7531.
  12
  13 Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
  14 ---
  15  drivers/net/mtk_eth.c | 7 +++++--
  16  1 file changed, 5 insertions(+), 2 deletions(-)
  17
  18 --- a/drivers/net/mtk_eth.c
  19 +++ b/drivers/net/mtk_eth.c
  20 @@ -127,6 +127,7 @@ struct mtk_eth_priv {
  21         u32 mt753x_smi_addr;
  22         u32 mt753x_phy_base;
  23         u32 mt753x_pmcr;
  24 +       u32 mt753x_reset_wait_time;
  25
  26         struct gpio_desc rst_gpio;
  27         int mcm;
  28 @@ -943,12 +944,12 @@ int mt753x_switch_init(struct mtk_eth_pr
  29                 reset_assert(&priv->rst_mcm);
  30                 udelay(1000);
  31                 reset_deassert(&priv->rst_mcm);
  32 -               mdelay(1000);
  33 +               mdelay(priv->mt753x_reset_wait_time);
  34         } else if (dm_gpio_is_valid(&priv->rst_gpio)) {
  35                 dm_gpio_set_value(&priv->rst_gpio, 0);
  36                 udelay(1000);
  37                 dm_gpio_set_value(&priv->rst_gpio, 1);
  38 -               mdelay(1000);
  39 +               mdelay(priv->mt753x_reset_wait_time);
  40         }
  41
  42         ret = priv->switch_init(priv);
  43 @@ -1528,11 +1529,13 @@ static int mtk_eth_of_to_plat(struct ude
  44                         priv->switch_init = mt7530_setup;
  45                         priv->switch_mac_control = mt7530_mac_control;
  46                         priv->mt753x_smi_addr = MT753X_DFL_SMI_ADDR;
  47 +                       priv->mt753x_reset_wait_time = 1000;
  48                 } else if (!strcmp(str, "mt7531")) {
  49                         priv->sw = SW_MT7531;
  50                         priv->switch_init = mt7531_setup;
  51                         priv->switch_mac_control = mt7531_mac_control;
  52                         priv->mt753x_smi_addr = MT753X_DFL_SMI_ADDR;
  53 +                       priv->mt753x_reset_wait_time = 200;
  54                 } else {
  55                         printf("error: unsupported switch\n");
  56                         return -EINVAL;