From 7bdf39cfafd29fc1192dd1aa997b5937f92a3c74 Mon Sep 17 00:00:00 2001
From: Bin Meng <bmeng.cn@gmail.com>
Date: Fri, 10 Aug 2018 02:39:38 -0700
Subject: [PATCH] x86: efi: payload: Add default TSC frequency in the device
tree
It was observed sometimes U-Boot as the EFI payload fails to boot on
QEMU. This is because TSC calibration fails with no valid frequency.
This adds default TSC frequency in the device tree.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
arch/x86/dts/efi-x86_payload.dts | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/x86/dts/efi-x86_payload.dts b/arch/x86/dts/efi-x86_payload.dts
index 19f253064b..5ccb986774 100644
--- a/arch/x86/dts/efi-x86_payload.dts
+++ b/arch/x86/dts/efi-x86_payload.dts
@@ -30,6 +30,10 @@
stdout-path = "/serial";
};
+ tsc-timer {
+ clock-frequency = <1000000000>;
+ };
+
pci {
compatible = "pci-x86";
u-boot,dm-pre-reloc;
--
2.39.5