diff options
Diffstat (limited to 'target/linux/ipq806x/patches-4.19/0071-2-PCI-qcom-Fixed-IPQ806x-PCIE-reset-changes.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-4.19/0071-2-PCI-qcom-Fixed-IPQ806x-PCIE-reset-changes.patch | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-4.19/0071-2-PCI-qcom-Fixed-IPQ806x-PCIE-reset-changes.patch b/target/linux/ipq806x/patches-4.19/0071-2-PCI-qcom-Fixed-IPQ806x-PCIE-reset-changes.patch new file mode 100644 index 0000000000..8b9e5ff5d1 --- /dev/null +++ b/target/linux/ipq806x/patches-4.19/0071-2-PCI-qcom-Fixed-IPQ806x-PCIE-reset-changes.patch @@ -0,0 +1,85 @@ +From 490d103232287eb51c92c49a4ef8865fd0a9d59e Mon Sep 17 00:00:00 2001 +From: Sham Muthayyan <smuthayy@codeaurora.org> +Date: Tue, 19 Jul 2016 18:58:18 +0530 +Subject: PCI: qcom: Fixed IPQ806x PCIE reset changes + +Change-Id: Ia6590e960b9754b1e8b7a51f318788cd63e9e321 +Signed-off-by: Sham Muthayyan <smuthayy@codeaurora.org> +--- + drivers/pci/host/pcie-qcom.c | 24 +++++++++++++++++++----- + 1 file changed, 19 insertions(+), 5 deletions(-) + +--- a/drivers/pci/dwc/pcie-qcom.c ++++ b/drivers/pci/dwc/pcie-qcom.c +@@ -98,6 +98,7 @@ struct qcom_pcie_resources_2_1_0 { + struct reset_control *ahb_reset; + struct reset_control *por_reset; + struct reset_control *phy_reset; ++ struct reset_control *ext_reset; + struct regulator *vdda; + struct regulator *vdda_phy; + struct regulator *vdda_refclk; +@@ -275,6 +276,10 @@ static int qcom_pcie_get_resources_2_1_0 + if (IS_ERR(res->por_reset)) + return PTR_ERR(res->por_reset); + ++ res->ext_reset = devm_reset_control_get(dev, "ext"); ++ if (IS_ERR(res->ext_reset)) ++ return PTR_ERR(res->ext_reset); ++ + res->phy_reset = devm_reset_control_get_exclusive(dev, "phy"); + return PTR_ERR_OR_ZERO(res->phy_reset); + } +@@ -288,6 +293,7 @@ static void qcom_pcie_deinit_2_1_0(struc + reset_control_assert(res->ahb_reset); + reset_control_assert(res->por_reset); + reset_control_assert(res->pci_reset); ++ reset_control_assert(res->ext_reset); + clk_disable_unprepare(res->iface_clk); + clk_disable_unprepare(res->core_clk); + clk_disable_unprepare(res->phy_clk); +@@ -306,6 +312,12 @@ static int qcom_pcie_init_2_1_0(struct q + u32 val; + int ret; + ++ ret = reset_control_assert(res->ahb_reset); ++ if (ret) { ++ dev_err(dev, "cannot assert ahb reset\n"); ++ return ret; ++ } ++ + ret = regulator_enable(res->vdda); + if (ret) { + dev_err(dev, "cannot enable vdda regulator\n"); +@@ -324,16 +336,16 @@ static int qcom_pcie_init_2_1_0(struct q + goto err_vdda_phy; + } + +- ret = reset_control_assert(res->ahb_reset); ++ ret = reset_control_deassert(res->ext_reset); + if (ret) { +- dev_err(dev, "cannot assert ahb reset\n"); +- goto err_assert_ahb; ++ dev_err(dev, "cannot assert ext reset\n"); ++ goto err_reset_ext; + } + + ret = clk_prepare_enable(res->iface_clk); + if (ret) { + dev_err(dev, "cannot prepare/enable iface clock\n"); +- goto err_assert_ahb; ++ goto err_iface; + } + + ret = clk_prepare_enable(res->core_clk); +@@ -422,7 +434,9 @@ err_clk_phy: + clk_disable_unprepare(res->core_clk); + err_clk_core: + clk_disable_unprepare(res->iface_clk); +-err_assert_ahb: ++err_iface: ++ reset_control_assert(res->ext_reset); ++err_reset_ext: + regulator_disable(res->vdda_phy); + err_vdda_phy: + regulator_disable(res->vdda_refclk); |