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path: root/target/linux/imx6/patches-3.14/0060-pci_imx6_fix-link-failure.patch
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Diffstat (limited to 'target/linux/imx6/patches-3.14/0060-pci_imx6_fix-link-failure.patch')
-rw-r--r--target/linux/imx6/patches-3.14/0060-pci_imx6_fix-link-failure.patch38
1 files changed, 0 insertions, 38 deletions
diff --git a/target/linux/imx6/patches-3.14/0060-pci_imx6_fix-link-failure.patch b/target/linux/imx6/patches-3.14/0060-pci_imx6_fix-link-failure.patch
deleted file mode 100644
index e416d83..0000000
--- a/target/linux/imx6/patches-3.14/0060-pci_imx6_fix-link-failure.patch
+++ /dev/null
@@ -1,38 +0,0 @@
-PCI: imx6: fix occasional link failure
-
-According to the IMX6 reference manuals, REF_SSP_EN (Reference clock enable
-for SS function) must remain deasserted until the reference clock is running
-at the appropriate frequency.
-
-Without this patch we find a high link failure rate (>5%) on certain
-IMX6 boards at various temperatures.
-
-Signed-off-by: Tim Harvey <tharvey@gateworks.com>
-
---- a/drivers/pci/host/pci-imx6.c
-+++ b/drivers/pci/host/pci-imx6.c
-@@ -262,11 +262,6 @@ static int imx6_pcie_deassert_core_reset
- if (gpio_is_valid(imx6_pcie->power_on_gpio))
- gpio_set_value(imx6_pcie->power_on_gpio, 1);
-
-- regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1,
-- IMX6Q_GPR1_PCIE_TEST_PD, 0 << 18);
-- regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1,
-- IMX6Q_GPR1_PCIE_REF_CLK_EN, 1 << 16);
--
- ret = clk_prepare_enable(imx6_pcie->sata_ref_100m);
- if (ret) {
- dev_err(pp->dev, "unable to enable sata_ref_100m\n");
-@@ -294,6 +289,12 @@ static int imx6_pcie_deassert_core_reset
- /* allow the clocks to stabilize */
- usleep_range(200, 500);
-
-+ /* power up core phy and enable ref clock */
-+ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1,
-+ IMX6Q_GPR1_PCIE_TEST_PD, 0 << 18);
-+ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR1,
-+ IMX6Q_GPR1_PCIE_REF_CLK_EN, 1 << 16);
-+
- /* Some boards don't have PCIe reset GPIO. */
- if (gpio_is_valid(imx6_pcie->reset_gpio)) {
- gpio_set_value(imx6_pcie->reset_gpio, 0);