Kernel: Add support for PCI Express on wandboard.

[ipfire-2.x.git] / src / patches / kernel / wandboard / imx / 0018-ARM-imx6q-clock-and-Kconfig-update-for-PCIe-support.patch

diff --git a/src/patches/kernel/wandboard/imx/0018-ARM-imx6q-clock-and-Kconfig-update-for-PCIe-support.patch b/src/patches/kernel/wandboard/imx/0018-ARM-imx6q-clock-and-Kconfig-update-for-PCIe-support.patch
new file mode 100644 (file)
index 0000000..25f207a
--- /dev/null
+++ b/src/patches/kernel/wandboard/imx/0018-ARM-imx6q-clock-and-Kconfig-update-for-PCIe-support.patch
@@ -0,0 +1,38 @@
+From 4f6723e8ff497e35c8f2fb20886fccc533c58cdb Mon Sep 17 00:00:00 2001
+From: Sean Cross <xobs@kosagi.com>
+Date: Thu, 26 Sep 2013 10:45:35 +0800
+Subject: [PATCH] ARM: imx6q: clock and Kconfig update for PCIe support
+
+Update imx6q clock initialization and Kconfig for PCIe support.
+
+Signed-off-by: Sean Cross <xobs@kosagi.com>
+Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
+---
+ arch/arm/mach-imx/Kconfig     | 2 ++
+ arch/arm/mach-imx/clk-imx6q.c | 4 ++++
+ 2 files changed, 6 insertions(+)
+
+--- a/arch/arm/mach-imx/Kconfig
++++ b/arch/arm/mach-imx/Kconfig
+@@ -806,6 +806,8 @@ config SOC_IMX6Q
+       select HAVE_IMX_SRC
+       select HAVE_SMP
+       select MFD_SYSCON
++      select MIGHT_HAVE_PCI
++      select PCI_DOMAINS if PCI
+       select PINCTRL
+       select PINCTRL_IMX6Q
+       select PL310_ERRATA_588369 if CACHE_PL310
+--- a/arch/arm/mach-imx/clk-imx6q.c
++++ b/arch/arm/mach-imx/clk-imx6q.c
+@@ -586,6 +586,10 @@ int __init mx6q_clocks_init(void)
+               clk_prepare_enable(clk[usbphy2_gate]);
+       }
+ 
++      /* All existing boards with PCIe use LVDS1 */
++      if (IS_ENABLED(CONFIG_PCI_IMX6))
++              clk_set_parent(clk[lvds1_sel], clk[sata_ref]);
++
+       /* Set initial power mode */
+       imx6q_set_lpm(WAIT_CLOCKED);
+