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PCI: qcom: Change duplicate PCI reset to phy reset 

[ Upstream commit dd58318c01 ]

The deinit issues reset_control_assert for PCI twice and does not contain
phy reset.

Link: https://lore.kernel.org/r/20200615210608.21469-4-ansuelsmth@gmail.com
Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Stanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Abhishek Sahu 2020-06-15 23:05:59 +02:00 committed by Greg Kroah-Hartman
parent 29ecf28be9
commit ea552383a9
1 changed files with 8 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/pci/controller/dwc/pcie-qcom.c
View File

@ -287,14 +287,14 @@ static void qcom_pcie_deinit_2_1_0(struct qcom_pcie *pcie)
{
struct qcom_pcie_resources_2_1_0 *res = &pcie->res.v2_1_0;
clk_disable_unprepare(res->phy_clk);
reset_control_assert(res->pci_reset);
reset_control_assert(res->axi_reset);
reset_control_assert(res->ahb_reset);
reset_control_assert(res->por_reset);
reset_control_assert(res->pci_reset);
reset_control_assert(res->phy_reset);
clk_disable_unprepare(res->iface_clk);
clk_disable_unprepare(res->core_clk);
clk_disable_unprepare(res->phy_clk);
clk_disable_unprepare(res->aux_clk);
clk_disable_unprepare(res->ref_clk);
regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies);
@ -333,12 +333,6 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie)
goto err_clk_core;
}
ret = clk_prepare_enable(res->phy_clk);
if (ret) {
dev_err(dev, "cannot prepare/enable phy clock\n");
goto err_clk_phy;
}
ret = clk_prepare_enable(res->aux_clk);
if (ret) {
dev_err(dev, "cannot prepare/enable aux clock\n");
@ -411,6 +405,12 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie)
return ret;
}
ret = clk_prepare_enable(res->phy_clk);
if (ret) {
dev_err(dev, "cannot prepare/enable phy clock\n");
goto err_deassert_ahb;
}
/* wait for clock acquisition */
usleep_range(1000, 1500);
@ -428,8 +428,6 @@ err_deassert_ahb:
err_clk_ref:
clk_disable_unprepare(res->aux_clk);
err_clk_aux:
clk_disable_unprepare(res->phy_clk);
err_clk_phy:
clk_disable_unprepare(res->core_clk);
err_clk_core:
clk_disable_unprepare(res->iface_clk);