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pci: msm: Bring pine EP out of reset after link up

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This change is to bring pine EP out of reset post link-up.

Change-Id: Ied7533258496e8c08f619997626d70bcd6f0f8de
Signed-off-by: Ramya SR <quic_rsr@quicinc.com>
Signed-off-by: Yogesh Jadav <quic_yjadav@quicinc.com>
Signed-off-by: Joco Zhang <quic_pingshen@quicinc.com>
This commit is contained in:
Ramya SR 2022-04-04 21:21:36 +05:30 • committed by Joco Zhang
parent f8b910e71e
commit caf2e99f0c
1 changed files with 13 additions and 1 deletions
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14
drivers/pci/controller/pci-msm.c
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@ -1043,6 +1043,7 @@ struct pcie_i2c_ctrl {
u32 reg_update_count;
u32 version_reg;
bool force_i2c_setting;
bool ep_reset_postlinkup;
struct pcie_i2c_reg_update *switch_reg_update;
u32 switch_reg_update_count;
/* client specific callbacks */
@ -6137,7 +6138,8 @@ static int msm_pcie_enable_link(struct msm_pcie_dev_t *dev)
msleep(20);
}
/* bring eps out of reset */
if (dev->i2c_ctrl.client && dev->i2c_ctrl.client_i2c_reset) {
if (dev->i2c_ctrl.client && dev->i2c_ctrl.client_i2c_reset
&& !dev->i2c_ctrl.ep_reset_postlinkup) {
dev->i2c_ctrl.client_i2c_reset(&dev->i2c_ctrl, false);
msleep(100);
}
@ -6303,6 +6305,14 @@ static int msm_pcie_enable(struct msm_pcie_dev_t *dev)
msm_pcie_config_link_pm(dev, true);
}
#if IS_ENABLED(CONFIG_I2C)
/* Bring pine EP out of reset*/
if (dev->i2c_ctrl.client && dev->i2c_ctrl.client_i2c_reset
&& dev->i2c_ctrl.ep_reset_postlinkup) {
dev->i2c_ctrl.client_i2c_reset(&dev->i2c_ctrl, false);
msleep(100);
}
#endif
goto out;
link_fail:
@ -8281,6 +8291,8 @@ static int msm_pcie_i2c_ctrl_init(struct msm_pcie_dev_t *pcie_dev)
&i2c_ctrl->version_reg);
i2c_ctrl->force_i2c_setting = of_property_read_bool(i2c_client_node,
"force-i2c-setting");
i2c_ctrl->ep_reset_postlinkup = of_property_read_bool(i2c_client_node,
"ep_reset_postlinkup");
of_get_property(i2c_client_node, "dump-regs", &size);
if (size) {