ipq806x: remove support for kernel 4.19

[openwrt/openwrt.git] / target / linux / ipq806x / patches-4.19 / 0071-8-pcie-qcom-Fixed-pcie_phy_clk-branch-issue.patch

diff --git a/target/linux/ipq806x/patches-4.19/0071-8-pcie-qcom-Fixed-pcie_phy_clk-branch-issue.patch b/target/linux/ipq806x/patches-4.19/0071-8-pcie-qcom-Fixed-pcie_phy_clk-branch-issue.patch
deleted file mode 100644 (file)
index 7cbeb3b..0000000
--- a/target/linux/ipq806x/patches-4.19/0071-8-pcie-qcom-Fixed-pcie_phy_clk-branch-issue.patch
+++ /dev/null
@@ -1,91 +0,0 @@
-From b74bab6186131eea09459eedf5d737645a3559c9 Mon Sep 17 00:00:00 2001
-From: Abhishek Sahu <absahu@codeaurora.org>
-Date: Thu, 22 Dec 2016 11:18:45 +0530
-Subject: pcie: qcom: Fixed pcie_phy_clk branch issue
-
-Following backtraces are observed in PCIe deinit operation.
-
- Hardware name: Qualcomm (Flattened Device Tree)
- (unwind_backtrace) from [] (show_stack+0x10/0x14)
- (show_stack) from [] (dump_stack+0x84/0x98)
- (dump_stack) from [] (warn_slowpath_common+0x9c/0xb8)
- (warn_slowpath_common) from [] (warn_slowpath_fmt+0x30/0x40)
- (warn_slowpath_fmt) from [] (clk_branch_wait+0x114/0x120)
- (clk_branch_wait) from [] (clk_core_disable+0xd0/0x1f4)
- (clk_core_disable) from [] (clk_disable+0x24/0x30)
- (clk_disable) from [] (qcom_pcie_deinit_v0+0x6c/0xb8)
- (qcom_pcie_deinit_v0) from [] (qcom_pcie_host_init+0xe0/0xe8)
- (qcom_pcie_host_init) from [] (dw_pcie_host_init+0x3b0/0x538)
- (dw_pcie_host_init) from [] (qcom_pcie_probe+0x20c/0x2e4)
-
-pcie_phy_clk is generated for PCIe controller itself and the
-GCC controls its branch operation. This error is coming since
-the assert operations turn off the parent clock before branch
-clock. Now this patch moves clk_disable_unprepare before assert
-operations.
-
-Similarly, during probe function, the clock branch operation
-should be done after dessert operation. Currently, it does not
-generate any error since bootloader enables the pcie_phy_clk
-but the same error is coming during probe, if bootloader
-disables pcie_phy_clk.
-
-Change-Id: Ib29c154d10eb64363d9cc982ce5fd8107af5627d
-Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
----
- drivers/pci/host/pcie-qcom.c | 16 +++++++---------
- 1 file changed, 7 insertions(+), 9 deletions(-)
-
---- a/drivers/pci/controller/dwc/pcie-qcom.c
-+++ b/drivers/pci/controller/dwc/pcie-qcom.c
-@@ -393,6 +393,7 @@ static void qcom_pcie_deinit_2_1_0(struc
- {
-       struct qcom_pcie_resources_2_1_0 *res = &pcie->res.v2_1_0;
- 
-+      clk_disable_unprepare(res->phy_clk);
-       reset_control_assert(res->pci_reset);
-       reset_control_assert(res->axi_reset);
-       reset_control_assert(res->ahb_reset);
-@@ -401,7 +402,6 @@ static void qcom_pcie_deinit_2_1_0(struc
-       reset_control_assert(res->ext_reset);
-       clk_disable_unprepare(res->iface_clk);
-       clk_disable_unprepare(res->core_clk);
--      clk_disable_unprepare(res->phy_clk);
-       clk_disable_unprepare(res->aux_clk);
-       clk_disable_unprepare(res->ref_clk);
-       regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies);
-@@ -444,12 +444,6 @@ static int qcom_pcie_init_2_1_0(struct q
-               goto err_clk_core;
-       }
- 
--      ret = clk_prepare_enable(res->phy_clk);
--      if (ret) {
--              dev_err(dev, "cannot prepare/enable phy clock\n");
--              goto err_clk_phy;
--      }
--
-       ret = clk_prepare_enable(res->aux_clk);
-       if (ret) {
-               dev_err(dev, "cannot prepare/enable aux clock\n");
-@@ -513,6 +507,12 @@ static int qcom_pcie_init_2_1_0(struct q
-               return ret;
-       }
- 
-+      ret = clk_prepare_enable(res->phy_clk);
-+      if (ret) {
-+              dev_err(dev, "cannot prepare/enable phy clock\n");
-+              goto err_deassert_ahb;
-+      }
-+
-       /* wait for clock acquisition */
-       usleep_range(1000, 1500);
-       if (pcie->force_gen1) {
-@@ -538,8 +538,6 @@ err_deassert_ahb:
- err_clk_ref:
-       clk_disable_unprepare(res->aux_clk);
- err_clk_aux:
--      clk_disable_unprepare(res->phy_clk);
--err_clk_phy:
-       clk_disable_unprepare(res->core_clk);
- err_clk_core:
-       clk_disable_unprepare(res->iface_clk);