56 lines
1.6 KiB
Diff
56 lines
1.6 KiB
Diff
From c29fea58eb71593602445c7558443d8a6420d08f Mon Sep 17 00:00:00 2001
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From: Jack Ma <jack@vamrs.com>
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Date: Tue, 26 Mar 2019 20:09:42 +0800
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Subject: [PATCH 45/97] arm64: overlays: Add PCIE gen2 mode overlay
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Enable it by adding the following line in /boot/hw_intfc.conf:
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intfc:dtoverlay=pcie-gen2
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Signed-off-by: Jack Ma <jack@vamrs.com>
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---
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arch/arm64/boot/dts/rockchip/overlays/Makefile | 3 ++-
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.../dts/rockchip/overlays/pcie-gen2-overlay.dts | 16 ++++++++++++++++
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2 files changed, 18 insertions(+), 1 deletion(-)
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create mode 100644 arch/arm64/boot/dts/rockchip/overlays/pcie-gen2-overlay.dts
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diff --git a/arch/arm64/boot/dts/rockchip/overlays/Makefile b/arch/arm64/boot/dts/rockchip/overlays/Makefile
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index f6e8bae445e1..bb410648950b 100644
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--- a/arch/arm64/boot/dts/rockchip/overlays/Makefile
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+++ b/arch/arm64/boot/dts/rockchip/overlays/Makefile
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@@ -6,7 +6,8 @@ dtbo-$(CONFIG_ARCH_ROCKCHIP) += \
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two-color-led.dtbo \
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at24c02.dtbo \
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devspi1.dtbo \
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- devspi2.dtbo
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+ devspi2.dtbo \
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+ pcie-gen2.dtbo
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targets += dtbs dtbs_install
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targets += $(dtbo-y)
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diff --git a/arch/arm64/boot/dts/rockchip/overlays/pcie-gen2-overlay.dts b/arch/arm64/boot/dts/rockchip/overlays/pcie-gen2-overlay.dts
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new file mode 100644
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index 000000000000..86c7e9e83121
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--- /dev/null
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+++ b/arch/arm64/boot/dts/rockchip/overlays/pcie-gen2-overlay.dts
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@@ -0,0 +1,16 @@
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+// Enable pcie gen2 mode
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+/dts-v1/;
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+/plugin/;
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+
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+/ {
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+ model = "ROCK PI 4B";
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+ compatible = "rockchip,rockpi","rockchip,rk3399";
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+
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+ fragment@0 {
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+ target = <&pcie0>;
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+
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+ __overlay__ {
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+ max-link-speed = <2>;
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+ };
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+ };
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+};
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--
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2.25.1
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