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authorRonak Kanabar <ronak.kanabar@intel.com>2020-03-05 11:54:47 +0530
committerPatrick Georgi <pgeorgi@google.com>2020-03-30 09:42:55 +0000
commite5565c45cb71df105bc9ff1dc7572b4e749adaea (patch)
treee000066c58d5c33bd6ec73fef90bc83f25a78213 /src/soc/intel/tigerlake
parent991ee05de9fedc15f178660e0cac0b46e783525e (diff)
downloadcoreboot-e5565c45cb71df105bc9ff1dc7572b4e749adaea.tar.xz
soc/intel/{icelake, tigerlake}: Remove DDI A lane programming
For newer Intel graphics(>=11), The DDI port max lanes are set to 4 by default. And kernel driver no longer relies on coreboot to provide information via DDI_BUF_CTL_A(for DDI port A) register programming. Hence removing this code. BUG=b:150788968 BRANCH=None TEST=checked jslrvp and tglrvp compilation and boot. Change-Id: I32692501b60f48a07b8fbb9bb3a755b18f4b3ea9 Signed-off-by: Ronak Kanabar <ronak.kanabar@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/39313 Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Aamir Bohra <aamir.bohra@intel.com> Reviewed-by: Wonkyu Kim <wonkyu.kim@intel.corp-partner.google.com> Reviewed-by: Nick Vaccaro <nvaccaro@google.com> Reviewed-by: Maulik V Vaghela <maulik.v.vaghela@intel.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/intel/tigerlake')
-rw-r--r--src/soc/intel/tigerlake/graphics.c19
1 files changed, 0 insertions, 19 deletions
diff --git a/src/soc/intel/tigerlake/graphics.c b/src/soc/intel/tigerlake/graphics.c
index fef17e17e8..4054bd549b 100644
--- a/src/soc/intel/tigerlake/graphics.c
+++ b/src/soc/intel/tigerlake/graphics.c
@@ -25,7 +25,6 @@
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ops.h>
-#include <drivers/intel/gma/i915_reg.h>
#include <drivers/intel/gma/opregion.h>
#include <intelblocks/graphics.h>
#include <types.h>
@@ -37,24 +36,6 @@ uintptr_t fsp_soc_get_igd_bar(void)
void graphics_soc_init(struct device *dev)
{
- uint32_t ddi_buf_ctl;
-
- /* Skip IGD GT programming */
- if (CONFIG(SKIP_GRAPHICS_ENABLING))
- return;
-
- /*
- * Enable DDI-A (eDP) 4-lane operation if the link is not up yet.
- * This will allow the kernel to use 4-lane eDP links properly
- * if the VBIOS or GOP driver do not execute.
- */
- ddi_buf_ctl = graphics_gtt_read(DDI_BUF_CTL_A);
- if (!acpi_is_wakeup_s3() && !(ddi_buf_ctl & DDI_BUF_CTL_ENABLE)) {
- ddi_buf_ctl |= (DDI_A_4_LANES | DDI_INIT_DISPLAY_DETECTED |
- DDI_BUF_IS_IDLE);
- graphics_gtt_write(DDI_BUF_CTL_A, ddi_buf_ctl);
- }
-
/*
* GFX PEIM module inside FSP binary is taking care of graphics
* initialization based on RUN_FSP_GOP Kconfig