target/linux/lantiq/patches-4.9/0070-MIPS-Lantiq-Keep-ethernet-enabled-during-boot.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Thu, 19 Jan 2017 14:14:36 +0100
   3 Subject: [PATCH] MIPS: Lantiq: Keep ethernet enabled during boot
   4
   5 Disabling ethernet during reboot (only to enable it again when the
   6 ethernet driver attaches) can put the chip into a faulty state where it
   7 corrupts the header of all incoming packets.
   8
   9 This happens if packets arrive during the time window where the core is
  10 disabled, and it can be easily reproduced by rebooting while sending a
  11 flood ping to the broadcast address.
  12
  13 Cc: john@phrozen.org
  14 Cc: hauke.mehrtens@lantiq.com
  15 Cc: stable@vger.kernel.org
  16 Fixes: 95135bfa7ead ("MIPS: Lantiq: Deactivate most of the devices by default")
  17 Signed-off-by: Felix Fietkau <nbd@nbd.name>
  18 ---
  19
  20 --- a/arch/mips/lantiq/xway/sysctrl.c
  21 +++ b/arch/mips/lantiq/xway/sysctrl.c
  22 @@ -564,7 +564,7 @@ void __init ltq_soc_init(void)
  23                 clkdev_add_pmu("1a800000.pcie", "msi", 1, 1, PMU1_PCIE2_MSI);
  24                 clkdev_add_pmu("1a800000.pcie", "pdi", 1, 1, PMU1_PCIE2_PDI);
  25                 clkdev_add_pmu("1a800000.pcie", "ctl", 1, 1, PMU1_PCIE2_CTL);
  26 -               clkdev_add_pmu("1e108000.eth", NULL, 1, 0, PMU_SWITCH | PMU_PPE_DP);
  27 +               clkdev_add_pmu("1e108000.eth", NULL, 0, 0, PMU_SWITCH | PMU_PPE_DP);
  28                 clkdev_add_pmu("1da00000.usif", "NULL", 1, 0, PMU_USIF);
  29                 clkdev_add_pmu("1e103100.deu", NULL, 1, 0, PMU_DEU);
  30         } else if (of_machine_is_compatible("lantiq,ar10")) {
  31 @@ -572,7 +572,7 @@ void __init ltq_soc_init(void)
  32                                   ltq_ar10_fpi_hz(), ltq_ar10_pp32_hz());
  33                 clkdev_add_pmu("1e101000.usb", "ctl", 1, 0, PMU_USB0);
  34                 clkdev_add_pmu("1e106000.usb", "ctl", 1, 0, PMU_USB1);
  35 -               clkdev_add_pmu("1e108000.eth", NULL, 1, 0, PMU_SWITCH |
  36 +               clkdev_add_pmu("1e108000.eth", NULL, 0, 0, PMU_SWITCH |
  37                                PMU_PPE_DP | PMU_PPE_TC);
  38                 clkdev_add_pmu("1da00000.usif", "NULL", 1, 0, PMU_USIF);
  39                 clkdev_add_pmu("1f203000.rcu", "gphy", 1, 0, PMU_GPHY);
  40 @@ -594,11 +594,11 @@ void __init ltq_soc_init(void)
  41                 clkdev_add_pmu(NULL, "ahb", 1, 0, PMU_AHBM | PMU_AHBS);
  42
  43                 clkdev_add_pmu("1da00000.usif", "NULL", 1, 0, PMU_USIF);
  44 -               clkdev_add_pmu("1e108000.eth", NULL, 1, 0,
  45 +               clkdev_add_pmu("1e108000.eth", NULL, 0, 0,
  46                                 PMU_SWITCH | PMU_PPE_DPLUS | PMU_PPE_DPLUM |
  47                                 PMU_PPE_EMA | PMU_PPE_TC | PMU_PPE_SLL01 |
  48                                 PMU_PPE_QSB | PMU_PPE_TOP);
  49 -               clkdev_add_pmu("1f203000.rcu", "gphy", 1, 0, PMU_GPHY);
  50 +               clkdev_add_pmu("1f203000.rcu", "gphy", 0, 0, PMU_GPHY);
  51                 clkdev_add_pmu("1e103000.sdio", NULL, 1, 0, PMU_SDIO);
  52                 clkdev_add_pmu("1e103100.deu", NULL, 1, 0, PMU_DEU);
  53                 clkdev_add_pmu("1e116000.mei", "dfe", 1, 0, PMU_DFE);