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Diffstat (limited to 'target/linux/mvebu/patches-4.14/527-PCI-aardvark-allow-to-specify-link-capability.patch')
-rw-r--r--target/linux/mvebu/patches-4.14/527-PCI-aardvark-allow-to-specify-link-capability.patch43
1 files changed, 43 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-4.14/527-PCI-aardvark-allow-to-specify-link-capability.patch b/target/linux/mvebu/patches-4.14/527-PCI-aardvark-allow-to-specify-link-capability.patch
new file mode 100644
index 0000000000..fb57f4112a
--- /dev/null
+++ b/target/linux/mvebu/patches-4.14/527-PCI-aardvark-allow-to-specify-link-capability.patch
@@ -0,0 +1,43 @@
+From f70b629e488cc3f2a325ac35476f4f7ae502c5d0 Mon Sep 17 00:00:00 2001
+From: Tomasz Maciej Nowak <tmn505@gmail.com>
+Date: Thu, 14 Jun 2018 14:24:40 +0200
+Subject: [PATCH 1/2] PCI: aardvark: allow to specify link capability
+
+Use DT of_pci_get_max_link_speed() facility to allow specifying link
+capability. If none or unspecified value is given it falls back to gen2,
+which is default for Armada 3700 SoC.
+
+Signed-off-by: Tomasz Maciej Nowak <tmn505@gmail.com>
+---
+ drivers/pci/host/pci-aardvark.c | 11 +++++++++--
+ 1 file changed, 9 insertions(+), 2 deletions(-)
+
+--- a/drivers/pci/host/pci-aardvark.c
++++ b/drivers/pci/host/pci-aardvark.c
+@@ -272,6 +272,8 @@ static void advk_pcie_set_ob_win(struct
+
+ static void advk_pcie_setup_hw(struct advk_pcie *pcie)
+ {
++ struct device *dev = &pcie->pdev->dev;
++ struct device_node *node = dev->of_node;
+ u32 reg;
+ int i;
+
+@@ -311,10 +313,15 @@ static void advk_pcie_setup_hw(struct ad
+ PCIE_CORE_CTRL2_TD_ENABLE;
+ advk_writel(pcie, reg, PCIE_CORE_CTRL2_REG);
+
+- /* Set GEN2 */
++ /* Set GEN */
+ reg = advk_readl(pcie, PCIE_CORE_CTRL0_REG);
+ reg &= ~PCIE_GEN_SEL_MSK;
+- reg |= SPEED_GEN_2;
++ if (of_pci_get_max_link_speed(node) == 1)
++ reg |= SPEED_GEN_1;
++ else if (of_pci_get_max_link_speed(node) == 3)
++ reg |= SPEED_GEN_3;
++ else
++ reg |= SPEED_GEN_2;
+ advk_writel(pcie, reg, PCIE_CORE_CTRL0_REG);
+
+ /* Set lane X1 */