board: ge: bx50v3: Add PCIe reset to DT

Add PCIe reset gpio to the Bx50v3 devicetree and get get rid of
CONFIG_PCIE_IMX_PERST_GPIO.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

diff --git a/arch/arm/dts/imx6q-bx50v3-uboot.dtsi b/arch/arm/dts/imx6q-bx50v3-uboot.dtsi
index b54e8e6ada74c9289f13657225d10f24d51fb31c..0253d2fa6f5bf5572a48f4daaa702cb645c706e8 100644 (file)
--- a/arch/arm/dts/imx6q-bx50v3-uboot.dtsi
+++ b/arch/arm/dts/imx6q-bx50v3-uboot.dtsi
@@ -47,3 +47,13 @@
        phy-reset-duration = <1>;
        phy-reset-post-delay = <0>;
 };
+
+/*
+ * PCIe reset is not done in the file shared with the kernel, since
+ * this GPIO also resets other peripherals (i.e. not just PCIe).
+ * These peripherals are being initialized by U-Boot and should not
+ * be reset by the kernel, so it may not reset PCIe via this GPIO.
+ */
+&pcie {
+       reset-gpio = <&gpio7 12 GPIO_ACTIVE_LOW>;
+};

diff --git a/include/configs/ge_bx50v3.h b/include/configs/ge_bx50v3.h
index 2b61172cc7395b704cd078f853e5e59e544a2bdc..5be3a49d05f7377fb582dee2b54a7e6b8547f7a6 100644 (file)
--- a/include/configs/ge_bx50v3.h
+++ b/include/configs/ge_bx50v3.h
@@ -150,7 +150,6 @@
 
 #define CONFIG_PCI_SCAN_SHOW
 #define CONFIG_PCIE_IMX
-#define CONFIG_PCIE_IMX_PERST_GPIO     IMX_GPIO_NR(7, 12)
 #define CONFIG_PCIE_IMX_POWER_GPIO     IMX_GPIO_NR(1, 5)
 
 #endif /* __GE_BX50V3_CONFIG_H */