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Diffstat (limited to 'target/linux/ipq806x/patches-4.14/0071-2-PCI-qcom-Fixed-IPQ806x-PCIE-reset-changes.patch')
-rw-r--r--target/linux/ipq806x/patches-4.14/0071-2-PCI-qcom-Fixed-IPQ806x-PCIE-reset-changes.patch85
1 files changed, 85 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-4.14/0071-2-PCI-qcom-Fixed-IPQ806x-PCIE-reset-changes.patch b/target/linux/ipq806x/patches-4.14/0071-2-PCI-qcom-Fixed-IPQ806x-PCIE-reset-changes.patch
new file mode 100644
index 0000000000..a2ae1e064b
--- /dev/null
+++ b/target/linux/ipq806x/patches-4.14/0071-2-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 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 @@
+ 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 @@
+ 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 @@
+ 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 @@
+ 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 @@
+ 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);