diff options
Diffstat (limited to 'target/linux/ipq806x/patches-5.4/096-PCI-qcom-Make-sure-PCIe-is-reset-before-init-for-rev.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-5.4/096-PCI-qcom-Make-sure-PCIe-is-reset-before-init-for-rev.patch | 46 |
1 files changed, 0 insertions, 46 deletions
diff --git a/target/linux/ipq806x/patches-5.4/096-PCI-qcom-Make-sure-PCIe-is-reset-before-init-for-rev.patch b/target/linux/ipq806x/patches-5.4/096-PCI-qcom-Make-sure-PCIe-is-reset-before-init-for-rev.patch deleted file mode 100644 index 2ca336b05b..0000000000 --- a/target/linux/ipq806x/patches-5.4/096-PCI-qcom-Make-sure-PCIe-is-reset-before-init-for-rev.patch +++ /dev/null @@ -1,46 +0,0 @@ -From 1960d75e3251659be8276529e4d01cf6993d9f4a Mon Sep 17 00:00:00 2001 -From: Ansuel Smith <ansuelsmth@gmail.com> -Date: Tue, 1 Sep 2020 14:21:44 +0200 -Subject: [PATCH] PCI: qcom: Make sure PCIe is reset before init for rev 2.1.0 - -Qsdk U-Boot can incorrectly leave the PCIe interface in an undefined -state if bootm command is used instead of bootipq. This is caused by the -not deinit of PCIe when bootm is called. Reset the PCIe before init -anyway to fix this U-Boot bug. - -Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com> -Fixes: 82a823833f4e ("PCI: qcom: Add Qualcomm PCIe controller driver") -Cc: stable@vger.kernel.org # v4.19+ ---- - drivers/pci/controller/dwc/pcie-qcom.c | 13 +++++++++++++ - 1 file changed, 13 insertions(+) - ---- a/drivers/pci/controller/dwc/pcie-qcom.c -+++ b/drivers/pci/controller/dwc/pcie-qcom.c -@@ -296,6 +296,9 @@ static void qcom_pcie_deinit_2_1_0(struc - reset_control_assert(res->por_reset); - reset_control_assert(res->ext_reset); - reset_control_assert(res->phy_reset); -+ -+ writel(1, pcie->parf + PCIE20_PARF_PHY_CTRL); -+ - regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies); - } - -@@ -308,6 +311,16 @@ static int qcom_pcie_init_2_1_0(struct q - u32 val; - int ret; - -+ /* reset the PCIe interface as uboot can leave it undefined state */ -+ 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->ext_reset); -+ reset_control_assert(res->phy_reset); -+ -+ writel(1, pcie->parf + PCIE20_PARF_PHY_CTRL); -+ - ret = regulator_bulk_enable(ARRAY_SIZE(res->supplies), res->supplies); - if (ret < 0) { - dev_err(dev, "cannot enable regulators\n"); |