From 3d5ff65b273c5bd1fcfcef478869d20661a23470 Mon Sep 17 00:00:00 2001 From: Yidi Lin Date: Wed, 28 Aug 2024 17:15:36 +0800 Subject: mb/google/cherry: Complete PCIe reset in romstage De-assert PERST# at romstage to reduce the waiting time in ramstage. Before ``` [INFO ] wait_perst_done: PCIe early PERST# de-assertion is not done, de-assert PERST# now [INFO ] mtk_pcie_domain_enable: PCIe link up success (47 tries) ``` After ``` [INFO ] wait_perst_done: PCIe early PERST# de-assertion is not done, de-assert PERST# now [DEBUG] wait_perst_asserted: 457568 us elapsed since assert PERST# [DEBUG] wait_perst_done: 163413 us elapsed since de-assert PERST# [INFO ] mtk_pcie_domain_enable: PCIe link up success (1 tries) ``` BUG=none TEST=boot from NVMe Change-Id: I3a73bd574ae8f9f4e624846ce8b901a7d2209e78 Signed-off-by: Yidi Lin Reviewed-on: https://review.coreboot.org/c/coreboot/+/84118 Reviewed-by: Jianjun Wang Tested-by: build bot (Jenkins) Reviewed-by: Yu-Ping Wu --- src/soc/mediatek/mt8195/Makefile.mk | 1 + 1 file changed, 1 insertion(+) (limited to 'src/soc/mediatek') diff --git a/src/soc/mediatek/mt8195/Makefile.mk b/src/soc/mediatek/mt8195/Makefile.mk index a37f715249..a3b002ed27 100644 --- a/src/soc/mediatek/mt8195/Makefile.mk +++ b/src/soc/mediatek/mt8195/Makefile.mk @@ -36,6 +36,7 @@ romstage-y += ../common/mt6315.c mt6315.c romstage-y += ../common/mt6359p.c mt6359p.c romstage-y += mt6360.c romstage-y += mt6691.c +romstage-$(CONFIG_PCI) += ../common/early_init.c ../common/pcie.c romstage-y += ../common/rtc.c ../common/rtc_osc_init.c ../common/rtc_mt6359p.c ramstage-y += apusys.c -- cgit v1.2.3