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Rock Pi 4 enable PCIe in device tree for "dev" target (#1624)

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* Rock Pi 4 enabled support for PCIe in device tree
* Rockchip64-dev added possibility to enable PCIe Gen2 speed via overlay
This commit is contained in:
Piotr Szczepanik
2019-11-18 18:23:10 +01:00
committed by Igor Pečovnik
parent 01fec6b3b4
commit b3bb934543
2 changed files with 62 additions and 3 deletions
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35
patch/kernel/rockchip64-dev/board-rockpi4-dts-pcie.patch Normal file
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@@ -0,0 +1,35 @@
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dts b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dts
index 1ae1ebd4e..2f84397d5 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dts
@@ -62,6 +62,8 @@
regulator-name = "vcc3v3_pcie";
regulator-always-on;
regulator-boot-on;
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
vin-supply = <&vcc5v0_sys>;
};
@@ -434,6 +459,21 @@
gpio1830-supply = <&vcc_3v0>;
};
+&pcie0 {
+ ep-gpios = <&gpio4 RK_PD3 GPIO_ACTIVE_HIGH>;
+ num-lanes = <4>;
+ max-link-speed = <1>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pcie_clkreqnb_cpm>;
+ vpcie12v-supply = <&vcc12v_dcin>;
+ vpcie3v3-supply = <&vcc3v3_pcie>;
+ status = "okay";
+};
+
+&pcie_phy {
+ status = "okay";
+};
+
&pmu_io_domains {
status = "okay";

30
patch/kernel/rockchip64-dev/general-rockchip-overlays.patch
View File

@@ -12,11 +12,12 @@ diff --git a/arch/arm64/boot/dts/rockchip/overlay/Makefile b/arch/arm64/boot/dts
index e69de29..576e190 100644
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/overlay/Makefile
@@ -0,0 +1,21 @@
@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: GPL-2.0
+dtbo-$(CONFIG_ARCH_ROCKCHIP) += \
+ rockchip-i2c7.dtbo \
+ rockchip-i2c8.dtbo \
+ rockchip-pcie-gen2.dtbo \
+ rockchip-spi-jedec-nor.dtbo \
+ rockchip-spi-spidev.dtbo \
+ rockchip-uart4.dtbo \
@@ -38,7 +39,7 @@ diff --git a/arch/arm64/boot/dts/rockchip/overlay/README.rockchip-overlays b/arc
index e69de29..9512445 100644
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/overlay/README.rockchip-overlays
@@ -0,0 +1,101 @@
@@ -0,0 +1,106 @@
+This document describes overlays provided in the kernel packages
+For generic Armbian overlays documentation please see
+https://docs.armbian.com/User-Guide_Allwinner_overlays/
@@ -49,7 +50,7 @@ index e69de29..9512445 100644
+
+### Provided overlays:
+
+- i2c7, i2c8, spi-spidev, uart4, w1-gpio
+- i2c7, i2c8, pcie-gen2, spi-spidev, uart4, w1-gpio
+
+### Overlay details:
+
@@ -65,6 +66,11 @@ index e69de29..9512445 100644
+
+I2C8 pins (SCL, SDA): GPIO1-C5, GPIO1-C4
+
+### pcie-gen2
+
+Enables PCIe Gen2 link speed on RK3399.
+WARNING! Not officially supported by Rockchip!!!
+
+### spi-jedec-nor
+
+Activates MTD support for JEDEC compatible SPI NOR flash chips on SPI bus
@@ -242,6 +248,24 @@ index 0000000..54bc844
+ };
+ };
+};
diff --git a/arch/arm64/boot/dts/rockchip/overlay/rockchip-pcie-gen2.dts b/arch/arm64/boot/dts/rockchip/overlay/rockchip-pcie-gen2.dts
new file mode 100644
index 0000000..54bc844
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/overlay/rockchip-pcie-gen2.dts
@@ -0,0 +1,12 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "rockchip,rk3399";
+ fragment@0 {
+ target = <&pcie0>;
+ __overlay__ {
+ max-link-speed = <2>;
+ };
+ };
+};
diff --git a/arch/arm64/boot/dts/rockchip/overlay/rockchip-spi-jedec-nor.dts b/arch/arm64/boot/dts/rockchip/overlay/rockchip-spi-jedec-nor.dts
new file mode 100644
index 0000000..3a2be38