From b30a47b841f1c7d55d9cf207e1cc89f1b7f7fa51 Mon Sep 17 00:00:00 2001 From: Patrick Rudolph Date: Mon, 15 Jul 2019 18:04:23 +0200 Subject: sb/intel/{bd82x6x|ibexpeak}: Drop p_cnt_throttling_supported The processor P_BLK doesn't support throttling. This behaviour could be emulated with SMM, but instead just update the FADT to indicate no support for legacy I/O based throttling using P_CNT. We have _PTC defined in SSDT, which should be used in favour of P_CNT by ACPI aware OS, so this change has no effect on modern OS. Drop all occurences of p_cnt_throttling_supported and update autoport to not generate it any more. Change-Id: Iaf82518d5114d6de7cef01dca2d3087eea8ff927 Signed-off-by: Patrick Rudolph Reviewed-on: https://review.coreboot.org/c/coreboot/+/34351 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel Reviewed-by: Nico Huber --- src/mainboard/lenovo/t420/devicetree.cb | 1 - 1 file changed, 1 deletion(-) (limited to 'src/mainboard/lenovo/t420') diff --git a/src/mainboard/lenovo/t420/devicetree.cb b/src/mainboard/lenovo/t420/devicetree.cb index c4092fe901..6deff6039c 100644 --- a/src/mainboard/lenovo/t420/devicetree.cb +++ b/src/mainboard/lenovo/t420/devicetree.cb @@ -68,7 +68,6 @@ chip northbridge/intel/sandybridge # Enable zero-based linear PCIe root port functions register "pcie_port_coalesce" = "1" register "c2_latency" = "101" # c2 not supported - register "p_cnt_throttling_supported" = "1" # device specific SPI configuration register "spi_uvscc" = "0x2005" -- cgit v1.2.3