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63 lines
1.9 KiB
Diff
63 lines
1.9 KiB
Diff
From 490d103232287eb51c92c49a4ef8865fd0a9d59e Mon Sep 17 00:00:00 2001
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From: Sham Muthayyan <smuthayy@codeaurora.org>
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Date: Tue, 19 Jul 2016 18:58:18 +0530
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Subject: PCI: qcom: Fixed IPQ806x PCIE reset changes
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Change-Id: Ia6590e960b9754b1e8b7a51f318788cd63e9e321
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Signed-off-by: Sham Muthayyan <smuthayy@codeaurora.org>
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---
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--- a/drivers/pci/controller/dwc/pcie-qcom.c
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+++ b/drivers/pci/controller/dwc/pcie-qcom.c
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@@ -92,6 +92,7 @@ struct qcom_pcie_resources_2_1_0 {
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struct reset_control *ahb_reset;
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struct reset_control *por_reset;
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struct reset_control *phy_reset;
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+ struct reset_control *ext_reset;
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struct regulator_bulk_data supplies[QCOM_PCIE_2_1_0_MAX_SUPPLY];
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};
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@@ -261,6 +262,10 @@ static int qcom_pcie_get_resources_2_1_0
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if (IS_ERR(res->por_reset))
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return PTR_ERR(res->por_reset);
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+ res->ext_reset = devm_reset_control_get(dev, "ext");
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+ if (IS_ERR(res->ext_reset))
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+ return PTR_ERR(res->ext_reset);
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+
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res->phy_reset = devm_reset_control_get_exclusive(dev, "phy");
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return PTR_ERR_OR_ZERO(res->phy_reset);
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}
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@@ -274,6 +279,7 @@ static void qcom_pcie_deinit_2_1_0(struc
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reset_control_assert(res->ahb_reset);
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reset_control_assert(res->por_reset);
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reset_control_assert(res->pci_reset);
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+ reset_control_assert(res->ext_reset);
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clk_disable_unprepare(res->iface_clk);
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clk_disable_unprepare(res->core_clk);
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clk_disable_unprepare(res->phy_clk);
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@@ -290,15 +296,21 @@ static int qcom_pcie_init_2_1_0(struct q
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u32 val;
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int ret;
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+ ret = reset_control_assert(res->ahb_reset);
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+ if (ret) {
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+ dev_err(dev, "cannot assert ahb reset\n");
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+ return ret;
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+ }
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+
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ret = regulator_bulk_enable(ARRAY_SIZE(res->supplies), res->supplies);
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if (ret < 0) {
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dev_err(dev, "cannot enable regulators\n");
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return ret;
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}
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- ret = reset_control_assert(res->ahb_reset);
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+ ret = reset_control_deassert(res->ext_reset);
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if (ret) {
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- dev_err(dev, "cannot assert ahb reset\n");
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+ dev_err(dev, "cannot assert ext reset\n");
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goto err_assert_ahb;
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}
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