git.openwrt.org Git - openwrt/staging/thess.git/blob

   1 From 7f7315db3d262298ab33d198d3f0b09cabfa7b6b Mon Sep 17 00:00:00 2001
   2 From: Lorenzo Bianconi <lorenzo@kernel.org>
   3 Date: Tue, 6 Aug 2024 17:55:48 +0200
   4 Subject: [PATCH] phy: airoha: adjust initialization delay in
   5  airoha_pcie_phy_init()
   6
   7 Align phy-pcie initialization delay to the vendor sdk in
   8 airoha_pcie_phy_init routine and allow the hw to complete required
   9 configuration before proceeding
  10
  11 Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
  12 Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
  13 Link: https://lore.kernel.org/r/8af6f27857619f1e0dd227f08b8584ae8fb22fb2.1722959625.git.lorenzo@kernel.org
  14 Signed-off-by: Vinod Koul <vkoul@kernel.org>
  15 ---
  16  drivers/phy/phy-airoha-pcie.c | 6 +++++-
  17  1 file changed, 5 insertions(+), 1 deletion(-)
  18
  19 --- a/drivers/phy/phy-airoha-pcie.c
  20 +++ b/drivers/phy/phy-airoha-pcie.c
  21 @@ -18,6 +18,9 @@
  22  #define LEQ_LEN_CTRL_MAX_VAL   7
  23  #define FREQ_LOCK_MAX_ATTEMPT  10
  24
  25 +/* PCIe-PHY initialization time in ms needed by the hw to complete */
  26 +#define PHY_HW_INIT_TIME_MS    30
  27 +
  28  enum airoha_pcie_port_gen {
  29         PCIE_PORT_GEN1 = 1,
  30         PCIE_PORT_GEN2,
  31 @@ -1181,7 +1184,8 @@ static int airoha_pcie_phy_init(struct p
  32         airoha_phy_pma1_set_bits(pcie_phy, REG_PCIE_PMA_SS_DA_XPON_PWDB0,
  33                                  PCIE_DA_XPON_CDR_PR_PWDB);
  34
  35 -       usleep_range(100, 200);
  36 +       /* Wait for the PCIe PHY to complete initialization before returning */
  37 +       msleep(PHY_HW_INIT_TIME_MS);
  38
  39         return 0;
  40  }